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Re: My Nikon 85mm f 1.4 is not connecting with my D700. ...
Nikon has made at least two different 85mm f/1.4 lenses. Some of them have an aperture ring. If your lens is one of those, turn the ring to its smallest aperture (largest f/number, it should be f/16).
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When there is a capital F, and in front of it is a triangle, it means there is no lens in or a non CPU lens.
If you did install a very old lens, or a lens from an other brand, the camera can't use the autofocus and picture settings. You only can use these lenses in manual. That means not only the focus has to be set manual, but all other things like time and aperture.
Lens mount
Nikon F mount (with AF coupling & AF contacts)
Lens compatibility
• D-type / G-type AF Nikkor (except IX-Nikkor): Autofocus and all functions possible • PC Micro-Nikkor 85mm f/2.8D: Usable in Manual exposure mode • AF Nikkor other than D-type (except AF Nikkor for F3AF): All functions except 3D Matrix Metering possible • AI-P Nikkor: All functions except 3D Matrix Metering and autofocus possible • IX-Nikkor: Cannot be used • Non-CPU: Usable in Manual exposure mode (exposure meter cannot be used) Electronic Rangefinder usable with lens with maximum aperture of f/5.6 or faster.
On DX cameras (everything except the D700 and the D3 series) the smaller sensor causes the lenses to seem longer. A 50mm lens on a digital body will give you about the same image as a 75mm lens would on a film body.
Older non-CPU lenses do not have the electronics to communicate with a newer camera. On some of these cameras you won't be able to use the camera's light meter.
Here is Nikon's specs of lens compatibility for the D40X:
Compatible Lenses*: Nikon F mount with AF coupling and AF contacts Type G or D AF Nikkor: 1) AF-S, AF-I: All functions supported; 2) Other Type G or D AF Nikkor: All functions supported except autofocus 3) PC Micro-Nikkor 85mm f/2.8D: Can only be used in mode M; all other functions supported except autofocus 4) Other AF Nikkor*â¹/AI-P Nikkor: All functions supported except autofocus and 3D Color Matrix Metering II 5)
Non-CPU: Can be used in mode M, but exposure meter does not function;
electronic range finder can be used if maximum aperture is f/5.6 or
faster 6) IX Nikkor lenses cannot be used *â¹ Excluding lenses for F3AF
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