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would someone tell me what is Exposure Control and Exposure Compensation?

[samlau]

Exposure control is how you control, mostly manually, how the picture is shot, i.e. by changing the shutter speed and/or aperture. That is nothing to do with focus or depth of field.

Exposure compensation is at situations you can tell the camera to meter under or over the correct exposure to fit the subject.

[hehehaha]

do the shutter speed and aperture adjust by controlling the exposure compensation?

[samlau]

Try to answer your ambiguous question:

Exposure Compensation is an "computer program routine" to adjust the settings of aperture and/or shutter speed.

e.g. the correct exposure of a composition is 1/125sec, f5.6 (which is the same as 1/250 sec, f4, 1/60 sec, f8, etc., again, we are talking about exposure here, and of course 1/250 sec is better to catch a moving object than 1/60sec, and f8 is more depth of field than f4))

For 1/125S, f5.6, if you set the Exposure Compensation to "-" direction, the camera will choose a small aperture (f8, f11, etc.) to make the picture darker, or make the shutter speed faster (1/250, 1/500). When set to "+" direction, a bigger aperture (f4, f2.8) or slower shutter speed (1/60, 1/30) will be chosen to make a brighter picture.

There are two major variables in photography - aperture, which is how big the opening is, and shutter speed, how long does the opening open then close.

Hope the above help ...

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thanks for answer all my questions