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How to set up nikon d40 for use with a opteka 500mm lens with T-mounts and opteka 2x multiplier.

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You'll have to use the Manual (M) mode. You'll have to focus manually and the camera's exposure meter will not be functional. Since this is a fixed-aperture lens, you'll have to control the exposure with the ISO and shutter speed. You'll almost certainly need a tripod.

If you don't shoot RAW, you'll probably want to increase contrast and sharpness slightly to compensate for the lens's inherent softness.

Posted on Jan 01, 2010

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How do I instal on a Nikon d3300 an opteka 500 mm lens with a opteka 2x multiplier? Could you help please?


Mount the multiplier onto the camera and then mount the lens onto the multipler. This assumes that by multiplier you really are referring to a tele-extender.

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1 Answer

My opteka zoom lens is not recognized by my Nikon d300


First, make sure that you have the right adapter to couple this lens to your Nikon. A universal adapter may actually fit and properly click into place but the electrical contacts may not match your Nikon. Make sure the electrical contacts on the adapter match the contacts on the camera body.

If they don't match, get an adapter specifically for Nikon and perhaps, specifically for your camera.

Once you have verified that it is a Nikon adapter, you need to make sure the electrical contacts between the adapter and the camera body are clean. Many people clean the contacts by holding the lens release button down and twisting the lens or in this case, the adapter, on and off ten or more times.

If neither of these options work you may need to contact Opteka, Nikon or both.

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1 Answer

Will a opteka 500mm mirror lens fit onto a nikon d3100?


When you go to the Opteka page here http://opteka.com/500m.aspx
You can select "options" for the camera company (there are 6) which you have. It may mean that the lens uses an adapter for the different pin and thread patterns, so the lens if bought new will fit with the selected option, a used one, you may need to get an adapter.
Best bet is to try before you buy.

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What lens adapter is needed to mount the Kelda 500mm lens to a nikon d90


This lens has a T-mount. You'll need a Nikon adapter for the T-mount, like this one: http://www.adorama.com/RKT2AI.html

Be aware that the D90 will not meter with this lens, as it lacks the electronics to communicate with the camera. You'll have to shoot in the Manual mode with no help from the camera's light meter. And of course, it's a manual focus lens so the autofocus won't work.

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1 Answer

I also have recently purchased a Rokinon 500-1000 mm telephoto lens with the 2x multiplier, however, when I attach it to my Nikon D3000 the camera still says "lens not attached" Is there...


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.

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1 Answer

How to put filters in opteka mirror lens


ON THE BOTTOM SIDE THAT MOUNTS TO YOUR CAMERA THEY ARE VARY SMALL THE SIZE IS (M 30.5 )

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1 Answer

Nikon d40, t-mount adapter, showing error no lens attached.


You'll need to switch to M (Manual) mode. You won't get any metering through the lens, nor will you get any autofocus.

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170-500 apo nikon for nikon D40


it will mount fine, but I don't believe you will have autofocus.

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1 Answer

Igot a d40 NIKON i bought a 500mm lens , i can't


You have to set your camera to manual mode (M)

Apr 04, 2009 | Cameras

1 Answer

Filters on an opteka 500 mm mirror lens


I am in possession of a opteka 500mm/F8 lens.
by a faulty assembly after cleaning them, I can not make more clear photos.
you have such a schedule or on the building and replace the lenses
so I can return the lens mount as it should

regards smeers carl c.smeers@telenet.be

Jul 12, 2008 | Opteka 500mm f/8 for Canon EOS

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