THE CAMERA LENS

The lens of a camera is often likened to the human eye—in fact, many people have announced that “the lens is the eye of the camera.” This is true, in that light enters through and is controlled by the lens and ultimately this light registers an image. However, there are many things that human eyes and human psychology of perception do automatically, which, on a lens, must be accomplished manually. Framing, focusing, and exposure are activities we rarely consciously think about with respect to the function of our eyes, but on a lens, which relies on us to deliberately set each of these functions, we are presented with a range of possibilities. Every lens-related variable offers not just a function, but ...

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