Exposure and Stops (Photography 101)

A wonderful article by Neil Creek depicting the relationship between ISO, Shutter Speed, and Aperture. He's even produced an exposure triangle. Read the full article (click here)

2 comments:

LarryD said...

Hi -

Does EV matter when you are shooting in RAW?

I own an e-510 Olympus DLSR using the 14-54 lens. I understand ISO vs shutter speed but the EV has me confused. I leave my EV on 0 all the time. Keep in mind that I shoot RAW and edit my pictures in Lightroom.

Is this correct or am I missing something with EV?

Thanks and great article posting.
-Larry

Gordon McKinney said...

There is EV compensation and absolute EV at a particular ISO.

EV comp indicates how many stops less or more than the camera's judgment you'd like to expose.

EV @ ISO xxx is an absolute light level at a particular ISO. i.e. EV10 @ ISO100 is one stop darker than EV10@ISO200. However manufactures (and myself) like to use EV baselined to ISO100. See my photo cheat sheet to get an idea of what i'm on about.