CAMERA

Dizon, Coralde, PatuboTau

HOW DO CAMERA LENSES WORK?LENS BASICS

- Objects give off reflected rays of light all directions.

- Light for the target image enters the camera through a glass or plastic lens. This bends (refracts) the light.

- All the rays of light from a point on the target object will meet a certain point (focal point).

In a camera, by adjusting the distance of the lens you can get the light from your subject to fall focused onto a film plane.

In film cameras the focused light falls on a photosensitive chemical emulsion coating a plastic film.

In digital camera it falls onto a CCD receptor.

Your eye works exactly in the same way with light being focused onto your retina

FOCUSING

light falling from objects at different distances will have a different focal plane.

This explains why sometimes when you take a photo of something close up the background appears fuzzy (and vice versa)