The earliest watch for a chance is pinhole camera (Pinhole Camera) , this is a black box and the opening that there is volume of a needle in a side. Pinhole camera does not use camera lens to help collect the light, the picture that gets so is very ambiguous. Be together as camera lens and camera equipment union, the circumstance began to have very big change. Can establish the camera lens compose of all sorts of types camera interior or link to SLR at present.

1, about camera lens

Term camera lens is the transparent material that points to to be used inside optical equipment (it is glass normally) , it is changeable of the light gather together. In photography, these components call camera lens element. Camera lens can point to single shot component or these component groups. Still can find alterable aperture in camera lens interior (I R I Sdiaphragm) , it is controallable the radial amount that enters watch for a chance.

Aperture

The place before be like is narrated, aperture is the size that alterable aperture place opens. When opening bigger aperture, can let more lights enter watch for a chance inside. Camera lens aperture is with F class (F-stops) or F is counted (Fnumbers) will measure, this is the mark of camera lens focal length. Big aperture has small F number, and small aperture has large F number.

2, term of understanding camera lens: An example

Olympus C-5050 camera lens

Olympus exceeds bright scorch camera lens: Olympus use term exceeds bright (Super Bright) will describe the scene with the biggest very tall aperture. AF scorch: The scorch camera lens of camera can come true to be opposite automatically anxious.
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