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Is that normal with a 50mm 1.4 G?
#2
I'm not sure where to find it again, but camera manufacturers were found to be boosting the exposure slightly at wide apertures. It was a small but detectable effect. I know Canon were doing this, but can't remember specifically if Nikon were too. There was a simple test, which was to twist the lens slightly so that it no longer coupled electronically to the body, and repeat the same exposure settings. You can then examine the RAWs to see if the resulting exposure really was the same. Of course care should be taken to remove other variables, such as flickering lights in the test area.
<a class="bbc_url" href="http://snowporing.deviantart.com/">dA</a> Canon 7D2, 7D, 5D2, 600D, 450D, 300D IR modified, 1D, EF-S 10-18, 15-85, EF 35/2, 85/1.8, 135/2, 70-300L, 100-400L, MP-E65, Zeiss 2/50, Sigma 150 macro, 120-300/2.8, Samyang 8mm fisheye, Olympus E-P1, Panasonic 20/1.7, Sony HX9V, Fuji X100.
  


Messages In This Thread
Is that normal with a 50mm 1.4 G? - by Fkid - 07-31-2012, 08:49 PM
Is that normal with a 50mm 1.4 G? - by popo - 07-31-2012, 09:50 PM
Is that normal with a 50mm 1.4 G? - by Fkid - 07-31-2012, 10:25 PM
Is that normal with a 50mm 1.4 G? - by mst - 08-01-2012, 08:22 AM
Is that normal with a 50mm 1.4 G? - by netrex - 08-01-2012, 09:50 AM
Is that normal with a 50mm 1.4 G? - by Fkid - 08-02-2012, 03:29 PM

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