A Different Kind of Sharpness

Another challenge for beginning photographers is learning how the camera sees differently than people do. We are used to looking at a scene with near and far objects and seeing all of them as in focus. But a camera can only focus at one distance at a time. To get near and far clear, we have to change the camera's aperture.

Techatticup, Nevada
ISO 100, 1/40 second, f/22, 24mm

Using a small aperture (represented by a "big" f-stop number) along with a wide-angle lens can help you get everything from close to the lens to the horizon in acceptable focus. In the image here, I set the aperture to f/22 (the smallest opening) and used a 24mm lens. This created an image where both the near old gas pump and the distant hills are all sharp.

Learn more about the effect of changing the aperture in Getting to Know Your Digital SLR Camera, September 29, 2018, in Missoula, Montana. Click here to register.