Attention Tamron 24-70 VC owners

Started Jul 28, 2012 | Discussions thread
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Horshack OP Veteran Member • Posts: 5,803
Re: f2.8 shot looks brighter to me

TAFB wrote:

same test with Nikon 50mm 1.8 lens (at 2.8 and 4.0):

Thanks, that the expected result. As m_appeal pointed out, there is a slight difference between your Tamron f/2.8 and f/4 @ the same shutter speed, so its aperture calibration may not be off by a full stop like my copy but it appears to be off by a significant amount nonetheless.

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