Photography Exhibition: At the Philadelphia Museum of Art - Daidō Moriyama: Tokyo Photographs

Currently at the Philadelphia Museum of Art there is a wonderful exhibition, Daidō Moriyama: Tokyo Photographs.

The exhibition will run until August 23, 2009

I agree with the Museum that Daidō Moriyama is one of the most important and exciting Japanese photographers of our time, having made prolific, often experimental pictures of modern urban life since the 1960s. This exhibition showcases a group of approximately 45 photographs made in and around Tokyo in the 1980s, when Moriyama focused his mature aesthetic on the city with renewed intensity.

Moriyama approaches the world with an equalizing eye, capturing disparate peripheral details that in themselves account for little, but together add up to a powerful diagnosis of modern experience. In 1980s Japan such details encompassed the disorienting and sometimes brutal juxtaposition of traditional culture and modernization, most visible in the glut of consumer goods and images. But in Moriyama’s photographs these subjects appear alongside the banal elements of any streetscape: a derelict patch of pavement and wall, a car with an aggressive key scratch running its full length, even a single rose blossom.

If you're traveling in the Philadelphia, PA area, don't miss this wonderful exhibition.

This article is the first of a new feature of the NSL Photography Blog, to bring to your attention important, interesting and worthwhile photography exhibitions by famous, not so famous, and unknown photographers. As I travel, I love seeing the work of other photographers as I hope you do. If you know of a new photographic exhibition which you think the Blog should publicize, please contact me.

Destination: San Francisco city-scape photographs

I'm often asked where are great spots for taking city-scapes (you know, landscapes in cities) at the destinations to which I've traveled. I've recently returned from San Francisco, a favorite destination of mine, and have some suggestions for you.

There are two great spots for taking wonderful skyline shots of San Francisco; Coit Tower and Twin Peaks. In addition, the Presidio is a marvelous location for taking a skyline photograph of San Francisco, or photos of one of the most famous landmarks in the US, the Golden Gate Bridge.

If you're in San Francisco visiting these locations, or anywhere, visiting similar city-scape vantage points, don't loose sight that the trek to the location, or the location itself, may have wonderful photographic opportunities well beyond the city-scape, or landmark shots themselves.

For example, for me most of the fun at the Coit Tower was getting there. We purposefully didn't take a tour bus, a cab, or public transportation to get to the Coit Tower, probably the number one location for tourists trying to take photos of San Francisco's "downtown" skyline. We walked, or should I more correctly say, we climbed there.

We took the famous Filbert Street Stairs to the Coit Tower. On the right is a photo of some of the homes and gardens along the Filbert Street Stairs. The stairs aren't for the "faint of heart" but if you take your time climbing them and take periodic rests to turn around and look at the breath-taking views of San Francisco Bay, it's a wonderful walk. Take a look at my Coit Tower gallery which includes photos of homes and gardens from our Filbert Street climb.

Of course, once you arrive at the "summit" of famous Telegraph Hill, and take the elevator ($5 for adults) to the top of the Tower, the skyline views are wonderful, from the Embarcadero and skyscrapers of the Financial District, to Fisherman's Wharf and Alcatraz, to the Golden Gate Bridge.

I've seen reviews of Coit Tower which relate tourist disappointment with it, once they arrive. They were expecting something far more grandiose, than something which looks like a fire plug on the outside, and with a first floor which is mostly a "gift shop." The murals inside are lovely, but the Tower itself is not the reason to visit this San Francisco icon. It's the climb to the Tower and the views from it which make this attraction so worthwhile.

I had never heard of Twin Peaks until a terrific waitress mentioned it to my wife and I at dinner, when we asked her where she recommends travelers visiting San Francisco go, especially for photographs. Twin Peaks are two hills with an elevation of about 922 feet (281 m) situated at the geographic center of San Francisco, California. They form the second highest point in San Francisco, after Mount Davidson.

We got to Twin Peaks via a rental car, but you can get there by tour bus. There is no public transportation which takes you to the summit, but the 37 Corbett Muni line stops near a path that runs up the hills on Crestline Drive. As you can see by the photo, the views are incredible. Check out some of my other Twin Peaks' photographs in my galleries.

The Presidio of San Francisco (originally, El Presidio Real de San Francisco or Royal Presidio of San Francisco) is a park on the northern tip of the San Francisco Peninsula in San Francisco, CA, within the Golden Gate National Recreation Area. It has been a fortified location since 1776 when the Spanish made it the military center of their expansion in the area. It passed to Mexico which in turn passed it to the United States in 1847.

In a past article, Traveler's "must" photos - Shooting Landmarks I talked about the disappointment some feel when they get home and see their photos of famous landmarks, such as the Golden Gate Bridge. One of my suggestions was to scout around for a new vantage point. Take a look at the variety of looks and shots I've taken of the Golden Gate Bridge in my Presidio gallery at NSL Photography. In the gallery, you'll find eleven different and some similar views of the Golden Gate Bridge which I think exemplifies that idea. The photos are from different angles and perspectives. They include photos of the Bridge showing the beach and fort below, and the parkland above. It's almost amazing how different the Bridge can look. We drove to the Presidio, which I recommend as it's a pretty large place and you don't want your visit cut short by the schedule demands of a tour bus.

If you're traveling in San Francisco go to these wonder sites for your photographs. You'll be glad you did, and don't let the Coit Tower naysayers keep you away, but take the Filbert Street Stairs, enjoy the gardens and the Bay views behind.

Have a great trip. It's a great city.

Photographing through glass and Plexiglas

While traveling, we often run into challenging photographic situations: a helicopter or small plane flying over the glaciers of Alaska, a glass wall protecting the Pandas at the National Zoological Park, a glass display case containing a great work of art at the Louvre, or a striped burrfish behind the glass of the National Aquarium. You might even want to snap a more mundane photograph of people at work, behind a large, plate glass window.

Great photos can be crafted in each of these situation, but you must be prepared to meet the "glass challenge;" reflection and focus.

Reflections on glass can be a photographer's bane, but sometimes a friend. One of the biggest problems with reflections is our brain works so well that sometimes we don't even notice small ones, but the camera doesn't miss a thing. As photographers, when working through glass, we must make ourselves aware of these reflections, which sometimes can even be us, or our clothing.

When shooting through glass, some cameras have trouble focusing on the subject and attempt to focus on the reflections on the glass. This must be overcome.


In the above photograph of a tailor shop in the Olde City area of Center-City Philadelphia, I wanted to capture the whimsy of the window painting of a tailor at a sewing machine. That required me to focus at the window, and use a midrange aperture (f8) to create significant depth of field to keep the shop in focus behind the window. Fortunately, when I came by the shop, the sun was behind the buildings across the street, so sun and building reflection was at a minimum, however, I had to wait for traffic to move past the shop to eliminate their reflection.

1. If you can, don't use a flash. That will immediately eliminate its self-reflection. When you must use a flash, do not direct its light straight on or you will get a photo of the flash of light it produces. Move the flash head to an angle so the flash's reflected light bounces off the glass at an angle, not directly back into the camera's lens. If you're taking a photo through a display case, and have an "off camera" flash, try using the flash from above the case. Using a "fast lens," a lens which can open its aperture very wide, can mitigate the need for flash use.

2. Perhaps the easiest was to eliminate reflections and focus problems is to hold the camera as close to the glass as possible to avoid glare and reflections. If you can, use a rubber lens hood, if you have a DSLR, to seal out light, or if its a point and shoot camera, use your hands at the side of the camera to do the same. This also has the benefit of eliminating problems of dirty glass as you will be focusing past the dirt on the subject behind the glass. If you need a wide view, use a wide angle prime or zoom lens. This is a great way to photograph at an aquarium.

3. Sometimes you can't get very close to the glass, since you want a wider view of the subject behind it. If the light is from a single source, such as often found in a museum, or even multiple sources, stand to the side of the subject to minimize the reflections from the light and eliminate your reflection.
   

4. You can use a circular polarizing filter almost anytime you are shooting through glass, or water for that matter. Circular polarizers are necessary with today's through the lens metering (TTL) and auto-focus cameras. Linear polarizers, though more effective, generally render TTL and auto-focus ineffective.

5. If you're shooting through a window of a moving bus, or a helicopter there are several things to do. Use a fast shutter speed. That will help you negate the movement of the bus. Consider manually pre-focusing your lens, or if your camera has the capability, use continuous focusing. Try setting your aperture at mid-range which will lengthen the depth of field, making up for focusing inaccuracy. If your DSLR lens has vibration reduction (VR), use it, especially if it has active VR. If your point and shoot camera has image stabilization, use it. Get as close to the window as possible, without touching it, to eliminate glare and reflection from inside the bus. Try a trick suggested to me. Use the rubber end of a light weight toilet plunger. Cut a hole in it for your lens and use it to block the light from inside, with the lens close to the window.

   Some people suggest the use of a circular polarizer when shooting through the windows of a helicopter or bus. It definitely can help you lessen or eliminate the refections on the window glass, or helicopter's Plexiglas, but if you've ever worn polarized sunglasses while in these vehicles you already know that it will accentuate the stress marks in the Plexiglas or the spots in the safety glass. Personally, I wouldn't use one when photographing from a helicopter or bus.

   If you have the option, shoot through the open door of a helicopter, instead of a window. It will make it easier to get great photos. You can be buffeted badly by the turbulence with an open door, so be prepared for that.

6. If you know you're going to be shooting through glass, especially if you're in a moving vehicle or helicopter, wear dark clothing to minimize your reflection.

When shooting with available light, as I did for the photo above, there are times when a little reflection can be a good thing. By focusing on the window itself, I was able to capture the neon signs in this bar window, plus the reflection of the sky, and the buildings across the street, to add to the shot's context and make the photo far more interesting.

Enjoy the "glass challenge."

What is the perfect camera/equipment bag for travel?

I can answer that question which was recently posed on one of the larger Internet photography forums, quite succinctly. "It doesn't exist."

We all travel to many varied destinations, under such diverse circumstances that there is no single bag which fits everyone, or even anyone, every time.

I did some research before setting out to write this article. There are many categories of camera/equipment bags. The main ones are: shoulder bags, backpacks & daypacks, sling bags, belt systems, hip/waist packs, briefcases, satchels, and rolling bags. At B&H Photo-Video's web site, a brief survey shows they carry 592 shoulder bags and 256 backpacks for cameras and accessories. That makes 848 camera bags when I stopped counting, and I wasn't even close to half-way through all their bag choices.

When I finished counting my camera/equipment bags, it totaled 12 which include: shoulder bags, backpacks, belt systems, waist bags, a brief case, and a satchel. Some were used for a while, then discarded when they didn't meet my needs, and are now used only for storage, but I do use 2 backpacks, a belt system, and a satchel regularly, chosen mostly, at this point, according to where I'm going and what equipment I'm carrying.

Photographers have varied bag purposes, equipment, body types, and travel destination requirements. I've found that these four factors are the main ones in determining the bag(s) needed for any particular journey. I regularly use 4 different bags for my travels, according to the those four factors.

1. Bag Purpose — When I travel, I often have two diverse needs for a camera bag which must be fulfilled on a trip; hauling equipment to and from airports and hotels, as well as carrying equipment while taking photographs so they are readily accessible. In airports and hotels my equipment needs to be secure and safe, protected from the elements and potential shock or breakage, in a bag which meets the requirements of government security and airline rules. When actually hauling my equipment while taking photographs, protection from rain, dirt, wind, etc. continues to be important, but now fast access becomes critical.
2. Equipment — I don't know about you, but I travel with at least one DSLR camera body with zoom lens attached, plus a wide angle zoom, and a super zoom telephoto at a minimum. In addition, I bring along a portable battery powered hard drive, memory chips, a flash, flash bracket and cable, cable release, filters, all kinds of other accessories, plus my laptop and its accessories. They all have to make it on my trip, and some need to be carried during the shoots.
3. Body Type — I'm not a big person, and I'm not twenty any longer, but I'm in good shape. I've gotten to the point where I haul around a lot of gear and aggregately it's not exactly light. As a result, I prefer to spread the weight on my body, so most of the time when I travel, I use a backpack from airport to hotel, etc., and a belt system while shooting. I occasionally use a satchel when I'm on a day trip, and most of the time will not actually be carrying equipment, or at least not much equipment. My main problem with shoulder bags, sling bags, brief cases, and satchels is they rest all their weight on one shoulder. Other bags use more body to spread their weight. That being said, many photographers love shoulder bags for their ease of equipment access and capacity.
   
4. Travel Destination Requirements —If I'm traveling to a city, I need my bags to withstand their environment, but if I'm traveling to a rain forest, or perhaps white water rafting, I have a completely different set of requirements which includes the need for being waterproof, not just water resistant.

All the bags do have some common requirements. The bags must,

• have the capacity to carry the required equipment.
• have a high quality to handle the rigors of travel.
• have strong zippers able with withstand the torture of use during travel.
• be protective of the gear through shock-absorbing, water resistant materials.
• meet carry-on requirements of airlines if used for that purpose.
• have customizable organization in the case of backpacks and other bags, or have enough variety of modules to carry gear in the case of belt systems.
• have rain protection built into the bag which can be used as needed.
• have the capability of carrying drinking water while traveling.

Each photographer has to carefully determine their own bag requirements to find their perfect bags.

The Rule of Thirds

There are principles of photography which when learned can dramatically improve your photographs, and help make them more consistently excellent. The Rule of Thirds, probably the most well known rule in photography, once understood can significantly improve how you compose your photographs.

The Rule of Thirds refers to the concept that the most eye-pleasing photographic compositions split the field of view into roughly equal thirds, whether you're holding your camera horizontally or vertically. It doesn't matter whether you're using a a typical consumer level point and shoot camera, or the most expensive professional digital single lens reflex (DSLR) camera. On some cameras the viewfinders have gridlines which will help you see the "thirds," but most of the time photographers must use their best judgment.

The Rule of Thirds is a compositional rule of thumb used throughout the visual arts. It's used in painting, photography and design. Specifically, the rule states images should be divided into nine equal parts by two equally-spaced horizontal lines and two equally-spaced vertical lines. The rule further states that important compositional elements should be placed along these lines and/or their intersections. The rule's exponents believe that aligning a subject with these points creates more tension, energy and interest than just centering the subject.

I believe the Rule of Thirds works much of the time, especially with landscapes, and cityscapes which we all run into when we travel, but it isn't the only principle of composition, and as we all know, sometimes rules are meant to be broken.

Various studies in the world of art have revealed that when people view images, their eyes naturally go to one of the Rule of Thirds intersection points rather than the center of the image, therefore when you use the Rule of Thirds you are directly using a person's normal way of viewing an image, instead of working against it.

The example photograph above is of Kicker Rock in the Galapagos Islands, off the coast of Ecuador, in the Pacific Ocean. That small white area along the water to the right of Kicker Rock is Celebrity Cruises' Xpedition. Note that I kept the ocean's horizon in the lower third of the horizontal plane of the photograph. I broke the rule to a point by putting the main part of the Rock in the center vertically, but it is along the left guide. The Xpedition is in the lower right quadrant.

Personally, I think the Kicker Rock photo opportunity cried out for using the Rule of Thirds, as landscape pictures often do. Keeping the water, for example, and its Kicker Rock reflection, in the lower third, allows the linear features of the image to flow from area to area.

Using any guidelines inflexibly is not a good idea. There are many situations in which guidelines or rules of thumb are better ignored. We should understand that the Rule of Thirds main thrust is to discourage photographers from placing the subject at the center of the image, or allow an image's horizon to bisect the photograph. Both of these would usually make for a mediocre or poor photo. When photographing people, it is normal to align the body with a vertical guide, and have their eyes align with a horizontal guide.

I hope you will experiment with the Rule of Thirds the next time you travel, and that you can use it to make your photos even better than they already are.

Review: Portable Battery Powered Hard Drives

Image storage while traveling is an ongoing challenge for the digital photographer. There are a number of options, each with pluses and minus.

Storage options while traveling include:

• Multiple Memory cards
• Portable stand alone hard drive which can directly download memory card images
• Laptop computer with a large internal hard drive
• Independent cd/dvd writer
• Photo kiosks to make cds or dvds while you travel
• Cloud computing to upload your photos on online server storage
• VPN connection to upload your photos to your computer at your home or office

In this article, I'll be reviewing portable battery powered, stand alone hard drive options. What makes these hard drives stand alone for photography is their ability to directly plug in memory cards to them, and download your photos to the hard drive. With these hard drives you don't need to be plugged into a computer to upload your photos to them.

I've reviewed what I consider the three leading stand alone portable battery powered hard drives for your consideration: Epson Multimedia Photo Viewer, Sanho HyperDrive Colorspace UDMA, and Wolverine ESP Portable Multimedia Storage and Player.

To be considered for this review, each of the portable stand alone battery powered hard drives had to have the following features:

• A capacity of at least 80GB, the minimum capacity I recommend to photographers.
• A minimum 3.2" TFT color screen to display photos directly on the drive.
• A removable battery so that spares can be readily available for extended life on long trips without access to an electric source for recharging.
• Built-in card slots for both CF and SD memory cards.
• Support for JPEG and RAW formatted photographs, with RAW capability for at least most of both Nikon and Canon DSLR cameras.
  
• USB 2.0 interface for connection to computer.

The Epson Multimedia Photo Viewer comes in 80 GB (P-6000) and 160 GB (P-7000) models. Both have 4.0" LCD 16.7 million colors displays running on Epson's Photo Fine Premia LCD technology. (There is a smaller 40GB Epson P-3000 Multimedia Storage Viewer which is not part of this review.) This is the largest screen of the three drives in this review. The display supports the Adobe RGB color space for consistent color. The screen has zoom capability to make it easy to view the details of each photo. The Epsons have built-in card slots which support CompactFlash (CF) and Secure Digital (SD) memory cards. The units measure 3.5" x 5.9" x 1.3" and weight 16.0 oz. They support video out capability. It can upload somewhat more than 20 GB's of photos on a single battery charge. The Epsons come with a Lithium-Ion Rechargeable Battery, AC adapter/charger, USB cable, hand strap, travel case, dual battery charger, viewing stand, and car adapter.

The Sanho HyperDrive Colorspace UDMA's come in 120 GB, 160 GB, 250 GB, 320 GB, and 500 GB capacities. They have 3.2" color QVGA 320 x 240 pixel TFT LCD screens, the smallest but more than capable and large enough screens of the three drives. The HyperDrives have zoom capability. They have 2 slots directly supporting 14 memory card formats including CF and SD memory cards. The units measure 5.25" x 2.95" x 1" and weigh 10.5 oz. The HyperDrives do not support video out. They are the fastest of the three downloading files from memory cards and uploading to a computer. The HyperDrives can upload about 250GB on a single battery charge. They come with a rechargable 18650 Lithium Ion battery, a universal (100-240V) voltage AC adapter, USB cable, travel case, and a 12V car charger.

The Wolverine ESP Portable Multimedia Storage and Players come in 80GB, 120GB, 160GB, and 250GB capacities. They have 3.6" Wide Angle TFT LCD screens, slight larger than the HyperDrive screens. The Wolverines have zoom capability. They have 2 slots directly supporting 8 memory card formats including CF and SD memory cards. The units measure 5.3 x 2.8 x 0.9" and weigh 10.2 oz. The Wolverines support video out. The Wolverines can upload about 20GB on a single charge. They come with a rechargable battery, an AC charger, USB cable, and travel case.

The Interface of the Epson is excellent, though some have complained about deletion. The HyperDrive interface is the best of the three, in my opinion, with the Wolverine interface capable, but the least of the three. If you have a DSLR and store your files in RAW format, please check to make sure the drives will display your camera's photos. All three generally display DSLR RAW files from Canon and Nikon cameras.

My interest in these hard drives is primarily for the RAW and JPEG capability. The minimum size hard drive which I need is 160GB's due to my basic RAW file size of about 15+ MB's per photo. The HyperDrive's storage capability of 250 GB's of photos on one battery charge is a big factor for me, and for anyone who might be traveling without access to electricity for recharging for a prolonged time, such as when white-water rafting on the Colorado River in the Grand Canyon.

At this time the street price of the Epson 160GB P-700 is $800. The Hyperdrive 160GB model is $315. The Wolverine 160GB model runs $380.

My first choice is the Sanho HyperDrive Colorspace UDMA for its speed, feature set and price. Actually, for me the Sanho HyperDrive Colorspace UDMA 500 GB unit at $520 is the best bet, having a capacity which will more than meet my needs at a price even below the 80 GB Epson P-6000 which has a street price of $600. For me the Wolverine units are a distant third. Their feature set is inferior to the Sanho and Epson products, and their screen is inferior as well, even though it is marginally larger than the Sanho units. It's major plus, compared to the Epson is price, but the superior Sanho is actually less expensive. The one drawback of the Sanho unit is it has no video out, however, that feature is of little consequence to me.

Traveler's "must" photos - Shooting Landmarks

Landmarks like Philadelphia's Independence Hall, New York's Statue of Liberty, San Francisco's Golden Gate Bridge, The Great Wall of China and Paris' Eiffel Tower are all subjects emblematic of their locations. They are geographic icons which you must capture with your camera, if only to say, "I was there!"

The problem with so many landmark photographs is that often when travelers return home, they find their photos of some of the most incredible and famous world sights boring, flat or humdrum. Why is that?

I think it's because their photos look the same as every one else's.

It's not easy to create a unique photograph of a landmark. After all, with millions of photos already taken of them, is there an unusual or distinctive shot left? The answer is yes. Here are 8 tips for making your landmark photographs special.

1. Change your perspective or angle on the subject. Take a picture from a different side. Tilt your camera. Perhaps get low to the ground and shoot upward.

   Don't just take the common "full-on" shots with people waving and smiling in front of the landmark looking toward your camera.

   Scout around for a new vantage point. Rather than just photograph the Panthéon like any ordinary building, I went inside to catch the detail of its magnificent dome.

2. Take a photo with the landmark in the background. Landmarks are special, often embodying the spirit and history of the area in which they're located. By placing a landmark in its surroundings you add interest and context to your photograph.

3. Use local inhabitants in your photograph to add human context and eliminate the sterility found in so many landmark photos. Not only does creatively adding people into pictures tell stories, it provides a realistic sense of the scale of the monument in contrast to the size of the people in your photograph.

   A bicycler riding past it, can add context, scale, visual interest, and the human element to the Betsy Ross House, to what would otherwise be an ordinary photo of a brick building with a flag.

4. If you're using a DSLR, try a special lens, such as a fish-eye. With it, you can gather the surrounding area around the landmark with the unusual perspective it can lend to your photo.
5. Shoot in low light, or near dusk or dawn for their golden tones, or even in the evening. Shooting in natural low light can add a special ambiance to your landmark shots, and by shooting your photos during "off-hours," the crowds of tourists are normally diminished, so you can get less busy shots.

   Cities have both night and day personalities. Some cities start to come alive at dusk, then seem to burst open after dark. Shooting in Las Vegas' and capturing Paris Las Vegas' Eiffel Tower at night is a more interesting photo than if taken during the day.

6. Add visual context to your photo. We see zillions of photographs of the Statue of Liberty taken from the shores of New York Harbor, standing alone in the Harbor as a sentinel. We don't see many photos of the Lady with a ship passing by, which would give the photograph context and echo the history of many immigrants' first sight of their new country.
7. Try processing some of your photos in "black & white" instead of color. It's rare today to see travel photographs in "black & white," but their monochromatic tones can add substantial drama and emotion to a photograph. Consider "film noir" movies and the way their cinematography enhances the drama, feel and tone of the movies.
8. From the above suggestions you can see that the rules of landmark photography (there aren't any) don't require you to take only full shots of the landmark. Often isolated portions of it, or close-ups of a small part of the landmark can be more interesting than the whole.

   In this photograph taken at the Hearst Castle, note that several of the hints discussed above were used. The photograph concentrates on the main entrance of the primary building in the Hearst Castle complex; Casa Grande.

   The photo was taken from an elevation well below the entrance, and framed by some of the lush vegetation of the Castle complex. The tendency of the lens to add limited "barrel distortion" to the photo was used to advantage to further frame the Castle entrance.
   

The DSLR Multiplier Myth Exposed

Last month, a friend asked me about purchasing a 300mm lens for wildlife photography with his Nikon D80, instead of a 500mm lens. He thought he could save some cash since the "300mm lens would give me the same magnification as a 450mm lens, wouldn't it?"

Before discussing the details, let me get the answer to his question out of the way, "It won't!"

What my friend was talking about is the "multiplier effect." Today's expensive professional level digital single lens reflex cameras (DSLR) have full sized sensors, meaning their sensors have the same size as a 35mm negative. Other professional DSLR's, as well as consumer oriented DSLR cameras have smaller sensors. Nikon calls their smaller sensors, DX sensors and their full size sensors, FX. When comparing lenses mounted on a DSLR with a DX sensor to a 35mm film camera, or a DSLR with an FX sensor we "multiply" the lens' focal length by 1.5, so a 300mm lens becomes a 450mm lens, or does it?

What's really happening is the field of view is being reduced or cropped. Cropping is the process of cutting part of an image out of a photograph to make the final photo. In the case of a Nikon D80 with a DX sensor, with a 300mm lens attached, the effective field of view is that of a 450mm lens. The photo is cropped, not magnified.

On the right is a view of Monument Valley through the lens of a DSLR. Inside the white rectangle is the image picked up by a full size, FX sensor. Inside the yellow rectangle is the image picked up by a smaller, DX sensor.

Note that the DX image is a cropped portion of the FX image. The field of view has been narrowed along both axises, horizontal and vertical. There is less of the scene in the DX image than the FX image.

Look at the two resultant photos on the right, below the lens view. Both are printed to the screen at the same size. The FX image is at the top, and the DX image is on the bottom.

If you examine them carefully you will find that the DX image appears more "magnified" than the FX image. That's happened because to print both photos to the same physical size, the smaller DX image was enlarged, to increase its size to the FX's image size.

This is where I believe the misunderstanding comes from, when discussing the "multiplier effect." Personally I think we would all be served better by eschewing the "multiplier" terminology and changing it to the "crop effect" and the "crop factor." If we used these terms from the beginning, I don't think anyone would think they could get more magnification from a 300mm lens than from a 400mm lens.

Now that we understand the crop (multiplier) effect, I can hear you ask, "So does the crop factor affect travel photography?" Yes it does, according to the situation. It depends on the type of photograph you're taking while traveling.

• If you're taking portraits, wildlife or macro photos then the crop factor won't be an issue.
• If you're taking landscape photos, or architectural photos in a crowded city, or indoor photos, the crop factor will impact your travel photography.

Often some of the most beautiful landscape photography has utilized wide-angle lenses to capture the scenery in front of the camera. As shown above, a DX based DSLR camera reduces, or crops the field of view. While a 28mm lens on an FX DSLR or 35mm film camera is considered to be a wide angle lens, it isn't on a DX DSLR camera. On a DX camera, the 28mm lens has the equivalent field of view of a 42mm lens.

This means that a landscape photographer using a DX DSLR needs to use extremely wide angle lenses to capture the same scenic panoramas as FX cameras. I use a Sigma 10mm-20mm zoom lens for my wide angle landscape photographs. It has the equivalent angle of view to a 15mm-30mm zoom lens which is a wide angle zoom lens specification in anyone's book.

If you've researched typical DSLR DX sensor based camera kits, I'm sure you've noticed that most come with a lens such as an 18mm-55mm zoom, which can provide a good angle of view for landscapes, architectural, and indoor photos. Now you know why.

Travel Photography: Geotagging, Part 2

In Travel Photography: Geotagging, Part 1, I discussed what geotagging was, and why anyone taking photographs while traveling should at least consider it its use. Here in Part 2, I discuss GPS receivers and geotagging software.

The Global Positioning System (GPS) is a global navigation satellite system developed by the United States Department of Defense, and maintained by the US Air Force. It uses 24 medium Earth orbit (12,500 miles above the earth) satellites, each transmitting precise microwave signals, which enable a person with a GPS receiver to determine their current location, the time, and their velocity.

The satellites circle the earth twice a day, but at any given time, it's rare to pick up even the half on any side of the earth. Fortunately, you only need 3 or 4 satellites to use a GPS receiver to navigate. The signals sent by GPS satellites are not able to reach deeply through solid objects, such as buildings, but the system works well outdoors.

Until 1983, the system was not available to the general public, but after Korean Air Lines Flight 007 was shot down that year, after straying into the USSR's prohibited airspace, President Ronald Reagan issued a directive making GPS freely available for civilian use. Since then, GPS has become a widely used aid to navigation worldwide, and a useful tool for map-making, surveying, commerce, and scientific uses, as well as geotagging.

I remember getting my first GPS receiver, plus software to turn my laptop into road navigation system, years ago. It was so much better than reading maps. It could pinpoint your position as you traveled. It's comforting to know exactly where you are, while driving in a new area. Now, when traveling, I use a portable GPS device to get around (OK, I admit I have some maps as backup, just in case.)

When I first began to experiment using GPS with my photography, there were few GPS receivers built specifically for use with Nikon or other GPS enabled DSLR cameras. The one standout at the time was from Red Hen, however, it cost more than $600. I decided to build my own. Like many, I based my system on the Garmin Geko 301 GPS receiver. I modified the Geko to mount on my camera, as well as the Nikon MC-35 GPS cable, and necessary PC serial cable. The unit worked like a charm with my Nikon D200, but was somewhat unwieldy due to the cabling requirements. Last year, I purchased the Solmeta DP-GPS N2 kit, which is small, and pulls in signals much better than my homemade setup.

Over time, GPS technology has dramatically improved. Receivers are now built with new chip sets which have more ability to receive and decode the L band microwave signals sent by the GPS satellites. When deciding which GPS receiver to purchase for your camera check for:

• Compatibility with your camera.
• Size and cable specifications to determine usability.
• If the unit must be attached to the hot shoe of your camera, or if it can be held on the strap, etc. to free the hot shoe for use with your flash.
• If the unit is plugged into a camera port which is used for other purposes, if a splitter is available for simultaneous use of the port with another device.
• If it has it's own power supply (preferable) or uses power supplied by the camera.
• If it has a built-in PNI Electronic Compass, as some cameras can record the direction the camera was pointed when the photograph was taken.
• If it has an auto indoor GPS position fixed mode, so that it will allow the camera to use the last GPS position received, to store with photos taken, while the camera is used inside.
  
• The sensitivity of the GPS unit to receive data, even in adverse conditions such as bad weather, among tall buildings in cities, and amid forested areas.

When I recently checked on Cnet's download.com for geotagging software, there were 10 choices, but I know there are many other products available. Quality geotagging software can actually write raw data into each photograph's Exif data, however, for me it's more important for it to be able to pull existing Exif data from my photos and use it. After reviewing geotagging software, I purchased RoboGeo. When choosing geotagging software check for:

• The software must be able to read your camera's Exif data directly, edit it, add new data to it, and use it for mapping purposes.
• In order to create export files, the software must be able to pull the data directly from photos from a list of your choosing.
  
• Is the software capable of stamping the photos themselves on their face, if desired, with time and GPS information?
• Can the software use Google Earth to directly geotag photos missing GPS information?
• Can the software geotag photos from place names, or IPTC locations?
• The software must be able to create Google Earth KML and KMZ files to create maps of your photos on Google Earth.
• The software must be capable of exporting geotagged photos to Google Maps, Flickr and Yahoo Maps, MapPoint, Shapefiles and create DXF files to be used in 3rd party utility programs.
• The software should be capable of use in GPS Visualizer, an excellent personal mapping web site.

Some photo sharing web sites like Smugmug.com are capable of making their own maps via your photographs, if they contain the correct Exif data in each photo. Here geotagging software comes in handy to edit GPS Exif data, or add data to photos with missing or incomplete GPS data. If you'd like to see what one of these wonderful maps looks like go to my photo-site NSL Photography. Navigate to the nslphotography > Cities > Philadelphia, Pennsylvania > Philadelphia Photo Walk - Society Hill / Olde City gallery. Opposite the gallery name, click on the "Map This" button. There are 39 photos which will map, so it might take a few moments. Click on one of the green balloons with a face, of a photo on the right, and see what happens.

The map sure answers the question, "Hey, exactly where is that?" doesn't it.