Recently purchased Rokinon 500/1000mm for Nikon D3000 camera...it has a black covered filter in the center of the lens...does this come off or is it part of the lens. Also, do the other filters go in the spot of the black circle or on the smaller converter?

did you try a different lens if you did send your camera in for repair . the lens gets damaged easy

If this is a new camera, it should still be under warranty. I suggest you contact Nikon before doing anything else to determine if the repair would be covered under warranty. Nikon also would be in a position to advise you as to what the problem might be so that in the event that the repair is not covered under warranty, you don't replace the wrong thing.

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.

The filters go on the back of the lens (the end that connects to the camera). If you detach the lens and look inside, you'll see a threaded ring. Simply screw the filter on, similar to how you put filters on the front end of other lenses.

Due to the great magnification ratio of this lens, you absolutely need to have it on a tripod or other stable support. Even the slightest camera shake will be magnified.

The lens also has very little depth of field, so you must focus precisely. Since you're mounted on a tripod, you might want to activate the LiveView feature and zoom in the subject while you focus.

The Nikon lens, absolutely.

Quantaray makes their lenses with a variety of mounts. A lens with a Canon mount, for example, will not fit on the D3000. Assuming the lens has a Nikon mount, then yes, it will work with the D3000.

The Rokinon lens does not have the electronics to communicate with the camera. You must set the camera to the Manual exposure mode in order to use this lens. You control the shutter speed on the camera and the aperture by turning the ring on the lens. You also will not be able to use the camera's exposure meter; you can use the LCD display and the histogram to fine-tune the exposure.

Refer to the manual for full details on using the Manual exposure mode.

For the Rokinon 500mm F/6.3 lens, you can either attach 95mm filters to the front or 34mm filters to the rear of the lens.

For the Rokinon 500mm F/8 lens, you can only attach 30.5mm filters to the rear of the lens.

To attach a filter to the rear of the lens, remove the lens from the camera (or take the rear lens cap off). There's a threaded screw mount just inside of where the lens fits onto the camera. Take your filter and screw it into place. Hand tighten until it's snug and doesn't project in the way---remember, you're going to want to take it off again later.

hi there, Nikon D3000 only support lenses with built-in motor
if you want to use this lens, you can only operate it manually while focusing on object
hope this reply will help

The 30.5mm rear filters fit in the rear of the lens. If you remove the T-mount adapter, you should see the threads which take the filter.

No!
The Rokinon is like the Nikon 85mm AIS lens and is manual focus only..

Hope this helps, Andrew