Long exposures at night

Discussion in 'Beyond the Basics' started by Iron Flatline, Apr 1, 2006.

  1. A quick question about long exposures at night: do I really need to cover the viewfinder? Is light getting into my shot that way?
     
  2. hobbes28

    hobbes28 Incredible Supporting Member

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    Nope, because the line of sight for light is seperated when the mirror us up.
     
  3. ksmattfish

    ksmattfish Now 100% DC - not as cool as I once was, but still

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    The problem is that the light can get to the meter through the viewfinder, so if you are using any sort of auto exposure mode it can affect it.
     
  4. DocFrankenstein

    DocFrankenstein Clinically Insane?

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    Depends on the camera. If you're using manual film cameras, then there's less need for it.

    If you're using canon's EOS the mirror lets through 40% of the light, so you do need to cover it. I'd imagine nikon's AF cameras are similar.
     

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why covering the viewfinder for long exposures at night?