Question about Cameras
I bought this used lens for macro work with my new Nikon D300. The lens will mount and I have set the non-CPU lens data. The problem seems mechanical with the lens itself. Off the camera, I can click the aperture ring but the actual aperture does not change from f/32. Ditto when mounted onto the camera. When I try to use aperture priority, the image is properly exposed, obviously only at f/32; since the lens will not open any wider, when I turn the ring, the camera properly reduces shutter speed, letting in less and less light. The image gets darker and darker; when the lens should be wide open at f/2.8, it is still physically at f/32, letting in little light, and there is no image at all. Am I correct in assuming that the lens is defective or broken? The little manual flip lever near the rear of the lens does open the blades smoothly; they are not stuck when I flip that little lever. But the aperture does not change when I manually change the ring. Thanks
It does sound like your lens diaphragm/aperture ring coupling mechanism is in need of repair.
Posted on May 04, 2008
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Posted on Jan 02, 2017
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That's the Nikon error message for a lens with aperture ring set to something other than the minimum (i.e. highest number).
The camera insists on controlling the aperture ring, and to do so, the ring must be set to the minimum setting.
Unless it is a "G" lens, which has no aperture ring whatsoever.
The camera body sets the aperture of the lens wide open while auto-focusing, and displaying through the viewfinder. When it comes time to flip the mirror up and take a picture, the camera dials the aperture to the setting you (or the camera) have selected.
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