Digital camera turntable A, S, M, P on behalf of what does this mean?
S5500 there are four kinds of "scene mode" and P file is very similar, are automatic exposure, the difference is in the P file when you can adjust the white balance, exposure compensation and other parameters.
P - program automatic exposure, as the name suggests is DC according to metering automatically determine the corresponding aperture and shutter speed, in order to achieve the correct exposure.
A - aperture priority auto exposure, that is, you can first determine an aperture, and then the camera automatically adjusts the corresponding shutter speed according to metering to achieve the correct exposure
M - full manual mode, is the aperture and shutter you need to set their own. Generally when shooting scenes of high light and dark when the big difference often need to use, such as snow, night, etc., because this time the automatic metering may be invalid.
S - shutter priority auto exposure, that is, you first determine a shutter speed, and then DC automatically adjust the corresponding aperture according to metering to achieve the correct exposure.
