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05-29-2011, 01:24 AM   #1
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K-X stop down metering problems with fast lenses

Hi, My "new" Auto Soligor 135mm 2.8 , K mount SN248xxxx with silver aperture ring will not work correctly with stop down metering at 2.8 and next click ( between 2.8 and 4 ),
this seems to only occur outdoors in bright daylight.
the image is well overexposed , practically just white screen.
if I switch from M to Av everything is fine, in lower ambient light everything is also correct.
So is it K-X or the lens? anyone experienced anything like that?
kind regards
jack

05-29-2011, 08:53 AM   #2
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What ISO are you using, and what shutter speed are you getting? My guess is, in bright light and f/2.8, your camera just can't get a fast enough shutter speed to get a well-exposed picture. Be sure to have ISO turned down as low as it goes - and that means turning off any artificial dynamic-range-enhancing options that restrict your ISO range.
05-29-2011, 09:11 AM   #3
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Some manual lenses do tend to trick the light meter (K/A 15mm for example)- try using spot metering or compensate manually.
07-27-2011, 06:00 AM   #4
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Original Poster
I do not experience anything like that with K7, the same lenses, the same situation although we do have Winter here in Perth right now , I might recheck it during next Summer

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