dof+and+eye

=Depth of Field and the Eye=

If you have 20/20 vision, you can see all focal planes from 20 feet away (your score is 20/20). In a camera, depth of field is achieved by controlling where the focal point hits the image sensor on a digital camera or the film in a film camera. In depth of field, the focal point hits right on the image sensor.



This is much the same as an eye with 20/20 vision. In an eye with 20/20 vision, the focal point of the light passing through the pupil hits the retina. Therefore, there is no distortion in the image (no distortion in what you see).