Tamron 17-50mm Overexposure (Not using flash)

Started Mar 28, 2008 | Discussions thread
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Re: Tamron 17-50mm Overexposure (Not using flash)
In reply to dwpro, Aug 8, 2012

dwpro wrote:

I have this problem too, but only between f3.2 and f4.5. The reason is the aperture remains wide open(f2.8 I suppose) when taking the picture, even though the camera is set to f4 or f3.5, etc.. So this is the reason(for my copy of the lens) that the exposure is all messed up...

I will go change it, but now, I know what to look for.

I have exactly the same problem on my Tamron 17-50. After reading a couple of posts this seems to be a very common problem on Tamron lenses.

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