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The focus gear stops and sticks and there is a grinding noise. It seems like the element inside is loose or something and is grinding and stopping as i move the focus.The focus gear stops and sticks and there is a grinding noise. It seems like the element inside is loose or something and is grinding and stopping as i move the focus.
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Turn the mode dial to "M". You control the shutter speed by turning the command dial, and you control the aperture by turning the aperture ring on the lens. The camera's exposure meter is shut off and won't help with the exposure. You can shoot a picture and look at it on the display to judge the exposure.
Nikon makes several different 85mm f/1.4 lenses, but it appears you're using one with an aperture ring. Turn the aperture ring to its smallest setting (largest f/number). You can control the aperture from the camera body, the same was as on a lens without an aperture ring.
At the risk of being obvious, you need a Nikon mount.
The lens comes with a T-mount. This is a "universal" mount with adapters for almost any camera mount, including the Nikon F mount. If the lens doesn't come with one, get a Nikon T-mount adapter.
The lens doesn't have any electronics, so you'll be shooting completely manual. No autofocus, no autoexposure, not even any exposure help from the camera's light meter.
This lens does not have the electronics to communicate with the camera. You have to use the camera on the Manual exposure mode (turn the mode dial to M) and set the aperture and shutter speed yourself. You will not get any metering help from the camera's light meter, but you can use the histogram to fine-tune your exposure. You also have to focus the camera manually.
You'll want to use a tripod or other support, as the lens will magnify every bit of camera shake.
If lens continues to work in your D90, then the issue is with your D7000 camera. U might want to contact Nikon to see if there is some sort of reset available for the electronics.
Also make sure that lens contacts are clean and free of dirt, etc.
Make sure you set the aperture ring on the lens to its smallest setting (largest f/number) and lock it. Without doing so, the lens will not communicate properly with the camera and thus you will not get the autofocusing.
Some of the Rokinon (and other ) zoom lenses could only go into MACRO at certain focal lengths- the lens you have "zooms" from 80 to 200 focal length,but is that done by "sliding" a ring forward and back on the lens, or by twisting a different ring that the one that focuses?
This is a lens for Sony/Minolta cameras. It is not compatible with the Nikon D90. Hence a Teleconverter for Nikon will not work on this lens to mount it to a Nikon D90.
The focus gear stops and sticks and there is a grinding noise. It seems like the element inside is loose or something and is grinding and stopping as i move the focus.
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