Minox GT under-exposure

SimonK

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So, I finally found a nice Minox GT in very good condition with everything apparently working as it should - meter in view finder, self-timer, battery test, etc.
I just put a first test roll through, and some of the outdoors pic's (not particularly challenging for the meter) have come out a little, but noticeably, underexposed.
Anyone have any comments, ideas?
 
Well now I am confused. The first roll was generally under-exposed. A bit of googling seemed to suggest this was not an uncommon problem with the GT. So just shot a second roll with the idea to see how much I needed to compensate for the lazy meter.
Shot 5 frames normally, 5 with the 2 stop backlight compensation activated, 5 with the ASA set 1 stop slower and 5 with it 2 stops slower.
I was expecting 5 of the negatives to be clearly of a better density than the other 15. But, in fact, all 20 shots are more or less satisfactorily exposed! One or two are better, but not significantly so and are pretty randomly placed in the roll.
Oh well, back to the drawing board.
 
... But, in fact, all 20 shots are more or less satisfactorily exposed!

Did you inspect the negatives or did you inspect prints?

Especially color neg film has plenty of latitude. And modern printing machines automatically compensate for 1 or 2 EV over and underexposure with ease. You don't see much difference in the outcoming prints, especially if the pictures were taken under usual lighting condition. You only see the difference when inspecting the negatives directly.

My GT too has a problem with exposure (either shutter or meter; I dont know). Unfortunately the offset is nonlinear. So simple exposure compensation doesn't work for me... :(
 
Among my many P&S cameras, I have always thought of the GT as the camera with the most accurate and precise exposure system for slow speed slide film. It is that good. Unlike print film, slide film reveals clearly when an exposure is off.
 
The GT has no AE lock, and actually times the exposure while it's taking the picture. This means you have to engage the back-light switch when there are highlights or when there's a bright sky somewhere in the picture..
 
My under-exposed shots were when there was no, or practically no, sky or bright patches, just a dark building or landscape. The 'bright sky' ones came out fine.

And does the Minox have one or two meters (like the XA) ?
 
My 35GT has always been pretty much the same, often under exposing, particularly with transparency film and with the correct 5.6 V battery. (By the way, the exposure compensation switch only gives 1 stop of extra exposure - 2x - and not 2 stops.)

Interestingly, I put a transparency film through a Kiev 35a Minox copy last week and all 36 exposures are pretty much spot on, including ones with substantial amounts of bright sky! An incredibly sharp lens too, from corner to corner...
 
My under-exposed shots were when there was no, or practically no, sky or bright patches, just a dark building or landscape. The 'bright sky' ones came out fine.

And does the Minox have one or two meters (like the XA) ?

It's got a single meter, located along the front lens element. If you change aperture, you see a slot over the meter getting narrower/wider. This meter cumulates the current (that is proportional to the amount of light hitting the cds cell) during exposure and cuts off when enough has passed. During metering prior to exposure, the measured current through the cds cell is displayed with the needle in the viewfinder..
 
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