“With an SLR, you are looking at your subject through the optic; you are literally seeing what the picture is going to look like. You have a device that will show you your depth of field, the area that will or will not be in critical focus. This is particularly true for me, because I’m often shooting at the maximum aperture of the lens, the aperture you actually view through. This helps you see how areas of color are affected. It can tell you if that blue has a hard edge, or if it’s somewhat soft and blended into something else.
When you look through a rangefinder, though, everything is sharp. The rangefinder window is by and large a focusing and framing device that lets you pick a part of the subject you want to be in critical focus. The only real way you can tell how the rest of the picture is going to look is by experience, or maybe a quick look at the depth-of-field scale on the lens itself. I think the rangefinder frees you up in a certain way. You are probably going to work a little looser in a structural sense, because everything is clean, clear and sharp. When I look through an SLR, I think I’m a little bit more aware of compositional elements, of the structure of the image. With a rangefinder camera, I’m seeing certain spatial relationships.”
National Geographic photographer William Alard from “The Photographic Essay.”