Hi fellows. Got a qn that has been puzzling me for a while now. I understand the effects of adjusting the following 3 attributes of a shot:
1. Aperture: adjusting the size of the aperture hole to constrain how much light enters the aperture at a single moment
2. Shutter speed: adjusting how long the shutter stays open, again to constrain the net amount of light that is captured/absorbed during a shot
3. ISO: adjusting how sensitive the sensor of the camera is, to the amount of light that it receives, at the expense of noise.
What I don't understand, is this "ev compensation" found on most cameras, that allows increments in both directions of 1/3 stops graduations. However, what is it really tweaking? I know it makes the final result brighter/darker, but is it achieving this by overriding any of the 3 attributes mentioned earlier, & if not, how does it make the photo brighter or darker without using those 3 attributes?
Thanx in advance.