Camera Parts

Aperture-

A usually adjustable opening in an optical instrument, such as a camera or telescope, that limits the amount of light passing through a lens or onto a mirror. Shutter-

A device that opens and closes to expose the film in a camera.

Exposure-

Process of allowing light to reach light-sensitive material to create latent image.

Depth of field- 

Is the distance between the nearest and farthest objects in a scene that appear acceptably sharp in an image.

F-stop-

the setting of an adjustable lens aperture.

Focal length-The focal length of an optical system is a measure of how strongly the system converges or diverges light.

Top Camera Parts

1	Mode dial	13	EF lens mount index
2	Power switch	14	EF-S lens mount index
3	Flash button	15	Flash-sync contacts
4	Main dial	16	Hot shoe
5	Shutter button	17	Focal plane mark
6	Red-eye reduction lamp	18	Strap mount

Back Camera Parts

1	Aperture button	12	Display button
	Exposure compensation button	13	AE lock button
	Erase button		FE lock button
2	Dioptric adjustment knob		Index button
3	Eyecup		Reduce button
4	Viewfinder eyepiece	14	AF point selection button
5	LCD monitor		Magnify button
6	Live view shooting button	15	Speaker
	Movie shooting button	16	DC cord hole
7	Quick control button	17	Card / battery compartment cover
	Direct print button	18	Access lamp
8	Tripod socket	19	Card / battery compartment cover release lever
9	Menu button	20	Playback button
10	Setting button	21	Card slot
11	Cross keys	22	Battery compartment
	ISO speed setting button
	White balance selection button
	Drive mode selection button
	AF mode selection button