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02-08-2010, 04:18 PM   #1
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Random Underexposure With Super A

I have a Super A, on my last few Rolls, 2 out of 4 rolls have some of the frames very underexposed or completely blank. The blank frames were in random places along the roll.

Nearly of these shots were made with 77mm ltd at between f2.8-4 on Av mode using AUTO. I use a lens hood.

Is this a known common problem? Or is it because of the cold weather.

02-08-2010, 11:59 PM   #2
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You should be able to test if it is a cold weather issue if you do this:

Put the camera without film in the back of the refrigerator for about an hour. Immediately after pulling the camera out of the refrigerator set the shutter to 1/4th or so, open the back, point the lens opening at a bright light, and fire off roughly 60 frames. Watch for mis- or short- fires.

After the camera has returned to room temperature do the same thing again, only this time without the fridge.
02-09-2010, 07:34 AM   #3
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I had something similar happen when I'd left the camera in very cold weather -the battery just gives up. The camera starts to under expose.

How old are the batteries - you might try a fresh pair.
02-09-2010, 04:46 PM   #4
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It could be a battery issue, but it could also be either the ISO resistor or the Aperture cam follower resistor corroding.

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