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Old Sep 24, 2006, 9:09 AM   #1
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I have 2 sigma lenses - 18-125mm F3.5-5.6 DC and the 28-300mm F3.5-6.3 DG Macro for my D200. I am finding that my raw images are underexposed by about 1 - 1 1/2 f stops even though the exposure metering shutter, aperture and manual exposure modes. I can adjust the results using exposure compensation, but I wonder if other D200 and Sigma lenses users have encountered similar problems. I have one Nikon lens - AFS 80-200 f/2.8 and get correct exposure results.
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Old Sep 25, 2006, 7:30 PM   #2
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I use two Sigma lenses with my D200 - the 50mm and 105mm F2.8 macros. I have not had this problem. I also use Nikon and Tamron lenses and all three seem to be right on the money.
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Old Oct 4, 2006, 5:19 PM   #3
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Using Sigma 10 200mm zoom with D200 and D70 no problems at all
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Old Oct 4, 2006, 5:39 PM   #4
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What does a lens has anything to do with exposure? :idea:

Isn't it TTL? i.e. if a filter such as an ND put in front of the lens wouldn't the camera compensate correctly for the attenuating effect?
-> The angle of coverage may be more critical... let say wider angle (collecting more brighter objects) than a tunnel view (which meter only a small portion)
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