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Chromatic aberration is an inherent problem in the manufacture of lenses. It is the failure of the glass to bend the light in such a way that it focuses all the colors at the same point, and it occurs because lenses have a different refractive index for different wavelengths of light. It is characterized by color fringing, or unwanted colors at the edge of objects. The colors can be red, cyan, green, magenta, blue, or yellow. You usually can’t see this fringing until you magnify the image quite a bit, but at 100 percent and higher it’s quite obvious. I’ve enlarged (#1) to 300 percent, and in (#2) you can see what I’m talking about. Chromatic aberration is quite pronounced in wide angle lenses, and it’s most obvious in the corners. The picture of this famous pool in the Gellert Hotel, Budapest, Hungary was taken with a 14mm lens. The center of the lens is largely devoid of these unwanted colors. Telephotos also have chromatic aberration, but it is usually not as bad.

It’s been quite some time since advancing technology finally took the teeth out of the old film-versus-digital debate, as most amateur and professional photographers have long-since switched to digital point-and-shoot and DSLR cameras. That said, there still are a few diehard silver halide devotees, and we’ve even seen some new films introduced in recent years.

As much as I love to capture subjects with saturated color because of the powerful visual impact they offer, I also seek out the opposite end of the spectrum. Subtle and desaturated colors create impact in a very different way. There seems to be a magical quality in nature, for example, when you shoot in fog or low clouds. This is one of the reasons I like photographing at dawn and sunrise because if there is humidity in the air, this is the best time to find these conditions. The colors are so soft and muted that they are breathtaking in a quiet and contemplative way.

The next time you find yourself frustrated by a difficult photo assignment, consider the challenges faced daily by Tara Miller—winner of the 2011 CNIB Eye Remember National Photographer Contest. Miller is a legally blind, professional photographer from Winnipeg, Manitoba who doesn’t let her disability stand in the way of her passion for creating beautiful imagery.

I learned a long time ago that I couldn’t rely on serendipity to get great shots of people when traveling. Once in a while I’d get lucky, but most of the time the background wasn’t perfect, the lighting wasn’t quite right, or the person wasn’t wearing clothes that told a story about the culture. In addition, I hesitate to point my camera at people without their permission. I can understand that they may feel I’m intruding on their space and their privacy, and I don’t want to do that. Grabbing shots of people without getting their permission also means that the chance of getting a model release is very small.

On The Cover
With summer upon us, we’ve dedicated this issue to nature and outdoor photography. No one exemplifies exploring the outdoors better than Josh Miller, who shot our cover photo of Elves Chasm while he was rafting the Colorado River at the Grand Canyon. To see more of his adventurous photos, see page 132. We also take an in-depth look at the top photo backpacks and sling bags as the importance of these traveling accessories cannot be overstated. Finally, we review the latest and greatest photo gear, from software to lighting equipment.