By MICHAEL PERKINS
THERE IS A GLOBAL RACE, ACCELERATING RAPIDLY SINCE THE DAWN OF THE DIGITAL AGE, toward better, faster image sensors in cameras great and small, as we wage the eternal photographic battle against the limits of light. It’s one more reason why this is the best time in the medium’s history to be making pictures.
It’s hard to express what a huge game-changer this is. Film-based photography advanced the science of gathering light in slow fits and starts for more than a century, with even some of the most popular consumer films rated at very slow speeds (Kodachrome) or, if faster, extraordinarily high grain (Tri-X). Suddenly, the world’s shadowy interiors, from stadiums to basements, give up their secrets to even bargain-priced cameras as ISO ratings for sensors climb and noise/grain abatement gets better and better.
The above image, taken inside the U.S. Capitol building in Washington, would have, in film terms, required either a full-open aperture (making a consistent depth of field from front to back tricky), a slow exposure (hard to go handheld when you’re on a tour) or a film rated at 400 or above. Plus luck.
By contrast, in digital, it’s a casual snap. The f/5.6 aperture keeps things sharp from front to back, and the ISO rating of 250 results in noise that’s so low that it’s visually negligible. The statue of television pioneer Philo Farnsworth is dark bronze, and so a little re-contrasting of the image was needed in post-editing to lighten up the deeper details, but again, the noise is so low that it’s really only visible in color. As it happens, I actually like the contrast between the dark statue and the bright room better in monochrome anyway, so everyone wins.
The message here is: push your camera. Given today’s technology, it will give you some amazing things, and the better you understand it the more magic it will produce. We are just on the cusp of a time when we can effectively stow the flash in the closet except in very narrow situations and capture stuff we only used to dream about. Get out there and start swinging for the fences.