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09-23-2015, 04:41 AM   #1
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Pentax MV without eyecup

Hello all,

I just learned yesterday, that a Pentax film SLR without eyecup might mess up the light meter reading because some light gets inside the viewfinder if an eyecup is not used, thus underexposing photos.

I already managed to shoot a film without a cup, so does this mean all my shot are badly exposed?

09-23-2015, 06:40 AM   #2
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Don't worry you should be ok.
09-23-2015, 09:44 AM   #3
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Welcome to the Pentax forums!

This is a potential problem for most SLR cameras having auto-exposure. Normally, your face shades the eyepiece enough to prevent throwing the meter off. The main problem is when shooting on tripod under bright conditions. Pentax made a slip-on eyepiece blind for use under those conditions, but usually it is enough to simply place your thumb across the opening.


Steve
09-24-2015, 09:59 AM   #4
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Yes, the issue is the cap, not the cup. If you are shooting on a tripod with a bulb release, you probably won't have your face pressed to the camera -- skewing the meter.

09-24-2015, 12:18 PM   #5
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I shot Pentax film cameras from the 1960s and never had an eyecup. I wear glasses, so my eye is back a bit from the eyepiece. I had few problems, but with the sun low and behind me, enough light could enter the eyepiece and cause an under exposure, especially on a Spotmatic. With B&W or color negative film this wasn't enough to be a problem, but with slide film it wasn't good.
09-24-2015, 08:37 PM   #6
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QuoteOriginally posted by TomB_tx Quote
I had few problems, but with the sun low and behind me, enough light could enter the eyepiece and cause an under exposure, especially on a Spotmatic.
It is more of a problem with stop-down metering, particularly when shooting adapted M42 lenses in Av mode on K-mount cameras on tripod. At narrower apertures the light coming in the eyepiece can easily be much more than that coming in through the lens.


Steve
09-24-2015, 11:31 PM   #7
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Thank you all for a response.
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