New answers tagged comparison
Auto with exposure compensation (at a fixed ISO) can give you the same lighting levels as manual, unless you want a very under- or over-exposed image (according to the meter in the camera). What it's unlikely to give you is the same combination of aperture and shutter speed. You can get this combination by using program (P) mode, with exposure ...
If the shutter speed, aperture, ISO and other camera settings are all the same, photos should be identical. What M mode does give you is the ability to go beyond the max exposure compensation that Av provides.
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