Exposure Compensation increases or decreases light. However, why is it necessary
if the ISO could be in/decreased and with all the shooting modes such as beach, action,
night etc.?
In beach mode, the light is decreased as well. In action mode, shutter speed is faster.
I've noticed if the Exp. Comp. is set to -2, and the flash is off, there is less blur, but the photo is much darker. Thus, more light is needed as the aperture is decreased and the shutter speed is increased, correct?
So when it's dark, how is that different from setting the ISO to 400, using flash, or decreasing the shutter speed?
And when it's too bright choosing the lowest ISO, and increasing the shutter speed?