D7100 + 50mm f/1.8D - aperture movement

Started Feb 20, 2014 | Questions thread
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D7100 + 50mm f/1.8D - aperture movement
Feb 20, 2014

Hi there,

Got a strange issue on my D7100 + 50mm f/1.8D

When I use the aperture ring, the aperture is set correctly, but when I switch to setting it via the command dial, it appears to do something strange.

Newbie talking here, so excuse me please if my assumptions are incorrect - When set to 1.8, the aperture should be wide open, and not constrict at all on taking a photo. However when I do so, it visibly moves in by 1-2mm. I assumed this was due to calibration on either piece of equipment, but I have tried another D7100 and another f/1.8D, which both produce the same results.

I am rather confused... or perhaps just under-informed?

 reduke's gear list:reduke's gear list
Nikon D7100 Nikon AF-S DX Nikkor 18-55mm f/3.5-5.6G VR Nikon AF Nikkor 50mm f/1.8D Nikon AF-S DX Nikkor 55-300mm f/4.5-5.6G ED VR
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Nikon D7100
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