Question about Quantaray (261660245) for Nikon AF Lens Converter

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Quantaray 2x AF for Nikon

I am having getting my camera to take a picture in sport mode with this lens.

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A 2x tele-extender will rob you of two stops of light. This is simply a matter of physics: you're looking at only one quarter of the scene, so you'll only get one quarter of the light.

You specified neither the camera body you're using nor the lens you're using the tele-extender with. Most Nikon bodies will not autofocus with lenses slower than F/5.6. (Actually, they might, but F/5.6 is what Nikon specifies.) With the two-step penalty, a lens would have to be F/2.8 or faster in order to autofocus.

The solution is to either get a faster lens ($2000 or so) or to switch off the autofocus and go manual.

Posted on Feb 05, 2010

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How can I find out the settings available on a Quantaray 70-300 mm zoom lens?


Quantaray has made several different 70-300mm lenses so I'm not sure exactly which one you have. However, if the lens doesn't have a AF/M switch it's no big deal. Assuming it's an autofocus lens, it's always on. If you want to switch to manual focus, flip the switch on the camera body.

If it's an older manual-focus Quantaray lens then the question is moot.

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Quantaray 600-1000mm Telephoto Zoom Lens FOR NIKON work with D3100 in all modes?


The lens is a manual focus lens. It doesn't matter which mode you have the camera in, you'll still have to focus it yourself.

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1 Answer

Is Quantaray NF AF work with Nikon D3000


Quantaray lenses are available with a variety of mounts. Assuming you get one with a Nikon mount, then yes, it will work with a Nikon camera. However, unless the lens has a focusing motor, it will not autofocus on the D3000. Some Quantaray lenses have such a motor, some do not.

Jul 31, 2011 | Quantaray 28-200MM F3.8-5.6 Lens for Canon...

1 Answer

Can I use Quantaray AF 28-90mm f/3.5-5.6 in a NIKON D5100? Thanks.


Quantaray makes lenses with a variety of mounts for a variety of cameras. A lens with a Sony mount, for example, will not fit onto a Nikon camera. Assuming the lens has a Nikon mount, it will fit on the D5100. However, the D5100 requires the lens to have an autofocus motor. If the lens does not have such a motor then it will not autofocus. It will still work fine as a manual focus lens.

Jun 19, 2011 | Quantaray AF 28-90mm f/3.5-5.6 Lens for...

1 Answer

Can the quantaray for Nikon AF 70-300mm zoom lens be used with a digital nikon camera?


Yes, assuming we're discussing SLR cameras. It can also be used with most Nikon film SLRs.

Sep 12, 2010 | Quantaray AF 70-300mm f/4.0-5.6 High Speed...

1 Answer

Will the Quanta 28-200 for the Nikon n75 work on the Nikon D5000?


Yes and no. I assume the lens is of more or less the same vintage as the N75? If so, the lens will fit onto the D5000. All of the camera's exposure and metering modes will work properly. However the lens lacks an interal focus motor and thus will not autofocus on the D5000. You can focus manually, and the green focus indicator in the viewfinder will continue to work.

Apr 22, 2010 | Quantaray 28-200mm f/3.8-5.6 for Canon AF

1 Answer

The Quantaray 70-300mm lens


Only if you get the version with the built-in autofocus motor. The D3000 lacks a mechanical AF coupling so AF lenses which need to be driven by a motor in the camera body will require manual focussing.

Either way, you're far better manually focussing the Quantaray/Tamron 70-300mm: the AF performance is very slow, very noisy and hunts around a lot to achieve focus.

Although the Quantaray and Tamron versions are identical lenses, if you have to buy this low-quality budget model then go for the Tamron: it's absolutely no better lens quality (and usually the same price), but the manufacturer's warranty from Tamron is much better than Ritz and is internationally valid. If you resell the lens then the Tamron will have some value (not much though) and the Quantaray will be near worthless as it's not so widely known, and has a poor reputation amongst those familiar with the brand.

"Cheap" isn't always the same as "good value"...

Mar 06, 2010 | Quantaray Tech-10 70-300mm f/4.0-5.6 Lens...

1 Answer

Will my quantaray tech-10 NF AF zoom lens (for me


Yes, with caveats. The autofocus won't work on D40/D60/D3000/D5000. The metering may not work in all modes on all cameras. Since you didn't specify which camera, I can't give you a better answer than that.

I have 30-year-old Nikon lenses working fine on my D90, but without metering. And the old lenses date before the invention of autofocus.

Nov 27, 2009 | Camera Lenses

1 Answer

Quantaray lense


Yes, the Quantaray Autofocus lens will focus automatically on the D80.

Sep 27, 2008 | Quantaray 135-400mm f/4.5-5.6 for Nikon AF

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