Nikon D750/lens question
I bought a used D750 with a Sigma f/2.8 EX DG fisheye lens. The lens has to be locked at f/22 to be able to work at all with the camera, yet the camera display shows f/2.8 in manual mode.
Does that mean the lens is working at f/2.8 or is it fixed at f/22 with this camera?
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