Home › Forums › Photography Q&A › EV – Oversimplification? › Reply To: EV – Oversimplification?
When in Aperture Priority, EV merely adjusts shutter speed. Likewise, when in the Shutter Speed Priority, EV merely adjusts aperture. If that’s true, why don’t people just say that? If it’s not true, or if I’ve oversimplified it, please let me know. Comments welcome.
That is all true, but not quite the whole truth. 🙂 Just curious, does your source tell you what EV does when you’re in P “program” Mode?
This question is very similar to your question that I answered here:
https://www.lenspiration.com/forums/topic/relating-iso-aperture-speed/
The word I used in my reply there was “stop”, but I think you could replace the word “stop” with EV, and the meaning would not change. So if you want to overexpose your picture by 1 stop, you just set your exposure compensation to +1 EV, and your camera will automatically adjust any of the 3 components of the exposure triangle to suitably overexpose by the amount you specified.
Basically, the way I understand it is this: Exposure Value is the “normal” value, what the camera thinks is the correct exposure. If you think it’s not correct and you want to make it a little darker, you tell the camera to compensate with a negative EV. (-1 or -1/2 EV, or whatever, where EV in this case actually refers to “stops”.) The two words are so closely related that they’re hard to separate. 🙂