Camera Parts

Aperture: gives your photography the professional treatment it deserves, with more sophisticated tools to perfect your images and powerful ways to browse and choose your best shots. Aperture gives you all the tools you need to uncover the hidden potential in your photos. It brings you even more advanced ways to organize, browse, and perfect images.
So you can make every shot your best shot.

Shutter: a device that opens and closes to expose the film in a camera. The amount of light allowed falling on each area unit.

Exposure: is the amount of light allowed to fall on each area unit of a photographic medium. A single shutter cycle. 

Depth of field: is the amount of distance between the nearest and farthest objects that appear in acceptably sharp focus in a photograph.

F-stop:a camera setting corresponding to a particular f-number.
Focal length:the distance between the center of a lens or curved mirror and its focus.

the equivalent distance in a compound lens or telescope.