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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.

The concept of complementary colors refers to three pairs of colors that artists agree look good together and complement each other. They are based on the color wheel that arranges colors in such a way that the colors opposite each other represent the three pairs. They are red and cyan, green and magenta, and blue and yellow. This doesn’t mean that other colors don’t work together very well, but it suggests that if you use complementary color themes in your work, the images will be visually compelling.

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.

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.

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.

As photographic technology and market trends continue to evolve at a rapid rate in our digital era, many of the latest advancements occur in the professional arena before filtering down to prosumer and amateur photographers. One such sector in a constant state of change is the photo printing and output market. InfoTrends, a leading worldwide market research and consulting firm for the digital industry, recently released an interesting study examining how these advancements influence customer preferences and create new revenue opportunities for photographers who recognize these shifts and adapt accordingly.