do you need to keep your eyey to eye piece to prevent light entering?

topcat07

topcat07

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Just picked up a magic lantern guide for Nikon D40 and one of the points is "the viewfinder eyepiece does not have an internal shutter to prevent light entering when used remotely"

how would the image be effected please would it be over exposed?
 
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topcat07 said:
Just picked up a magic lantern guide for Nikon D40 and one of the points is "the viewfinder eyepiece does not have an internal shutter to prevent light entering when used remotely"

Does this mean if i was using it on a tripod and the eye piece is not covered how would the image be effected please would it be over exposed?
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It might effect exposure calculations.
 
It might also affect the shot, this is most prevalent when taking long exposures, light can leak through the viewfinder and around the mirror, you get an effect which looks like flare.

If your camera doesn't have a shutter you can just cover the viewfinder, I always carry a black microfibre towel with my kit, mostly to dry off rain etc but it can be pressed into action to cover a viewfinder.
 
I agree with Mark, I have a plastic clip that came in the box and i use it only when setting up for long exposures. If your a fan of the 10 stop filter then seconds count this can add more time to the shot and its a noticeable difference.

I think this is the only time your results would really suffer from light leaking
 
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