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Thread: Do you ever use ev when you shoot?

  1. #21
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    Default Re: Do you ever use ev when you shoot?

    Quote Originally Posted by kelccm View Post
    Yes I will use the EV compensation depending on situation to achieve the correct exposure. If your subject and/or background is mostly white, then I will overexpose from the metered reading. If it was mostly black, then I will underexpose from the metered reading. The in camera meter can be easily fooled when shooting something that is mostly white or black.
    good pt ...becos the TTL metering uses 18% grey rule to set the exposure...
    Nikon D80, Nikon Coolpix 885, AFS DX VR Zoom- Nikkor 18-200mm f/3.5-5.6G IF-ED

  2. #22
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    Default Re: Do you ever use ev when you shoot?

    Quote Originally Posted by calebk View Post
    What do you mean by using EV as in exposure? Are you talking about EV as a unit of measurement, or are you actually referring to exposure compensation? EV stands for exposure value - 0EV means with a given set of exposure settings, you are getting an exposure of 18% grey at the metered spot.



    Most (if not all) light meters register a well-exposed image as being 18% grey. Assuming you are metering a white wall on Program AE Mode with no exposure compensation, the camera will give you a set of settings to shoot with, correct? Let's say you take that set of exposure settings and shoot the photo, your wall in the picture will not look white, but grey (i.e. underexposed). Similarly, shoot a black wall with no exposure compensation on Program as well; your black wall will look grey (i.e. overexposed)

    Hence, since camera meters push white down to grey, and black up to grey, one has to be able to know when to override these automatically generated settings to render white as white (overexposing by about one stop), and black as black (underexposing by one stop).

    In terms of tricky lighting situations, one has to look at what is the intended subject that needs to be well-exposed. Sometimes, you have to compromise by blowing out a certain amount of highlights to ensure your subject is well-exposed; exposing for the highlights may mean your subject is underexposed. Makes sense?
    very apt explanation indeed...
    Nikon D80, Nikon Coolpix 885, AFS DX VR Zoom- Nikkor 18-200mm f/3.5-5.6G IF-ED

  3. #23
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    Default Re: Do you ever use ev when you shoot?

    Quote Originally Posted by strauss View Post
    good pt ...becos the TTL metering uses 18% grey rule to set the exposure...
    Not just TTL metering, any light meter for that matter.

  4. #24

    Default Re: Do you ever use ev when you shoot?

    Quote Originally Posted by calebk View Post
    What mode are you shooting on? If you are shooting AE modes such as Program, Shutter Priority or Aperture Priority, you are changing Auto Exposure Compensation (AEC), not EV.
    I usually shoot in Aperture/Shutter Priority and half the time in total manual mode.

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