20 Most Recent Quantaray 100-300mm F4.5-6.7 Zoom lens for Minolta Questions & Answers

NEVER open it up. You will destroy the dust seals. Have Canon repair it.

Have you tried blowing dry compressed air into the seam? (A hairdryer on no-heat mode will work, as long as you don't get too enthusiastic.)
Have you tried to floss the seam with dental floss?
Tapped it lightly with a pencil?
If none of these work, I'm afraid disassembly is the next step, and I'd leave that up to a camera repair shop.

If I am not mistaken all lens can pretty much work with other cameras provide that the attachment is compatible. Having said that with the new SLR cameras with auto focus of the lens the lens itself has a motor and it would be difficult to attach it to a manual SLR. Save yourself the headache and if you can purchase same manufacturer for camera body and lens life would be wonderful. In the past I thought that I could save money and do the swap thing and it just became too much. In addition the new cameras that are out has wonderful features like anti vibration, smooth focusing and the sensors are just dynamite. Good Luck

No. Quantaray makes a wide range of lenses, with a wide selection of mounts. This is because the various camera manufacturers like Canon, Nikon, and Pentax have proprietary mounts. A Quantaray lens for Canon will not fit on a Nikon, for example. You need to specify the mount when you buy your lens.

Hey,

This can be used with many Digital SLR and Film Cameras, the compatble models are Nikon Digital SLR Cameras D60 & D40, Cannon EF SLR cameras, can also be used with Cannon Digital Rebel XT 8MP

Let me know if this helps

Regards

Hello
The Minolta AF lens will fit and work on most of the Minolta AF bodies (it will depend on exactly what lens it is as to the compatibility), you will also find that it will fit and work with the new range of Sony
digital SLR camera bodies.

The Quantaray lenses are a little bit more difficult as Quantaray make lenses for several different types of camera body, it should mention on the lens what make the lens mount is for. If you post further information about the lenses it might help.

How does it stop working? Do you mean it doesn't auto focus anymore?
Many longer focal length lenses wont auto focus with 2x teleconverters on them.

I have been researching this problem and found there's nothing you can do. Appararently, the quantaray, being an older lens, wasn't made to work with this latest era of cameras. Though it might work perfectly with your older camera, its technology is outdated as it relates to digital cameras and can't mesh with the latest and greatest. By the way, most of my questions were answered on the Digital Camera Resource page (www.dcresource.com)

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Return to vendor for repair or replacement

Any particular tune ?

Time for a CLA. The focus mechanism will is usually filled with grease, makes it smooth turning, if that grease separates it can make things difficult. Also, it could be something is misaligned with the helicoid. Here is a YouTube video that will explain how they work: https://www.youtube.com/watch?v=n_Lji91nIos

You need to contact local dealer , Or if you have the Box, contact who made it. Or see if Manual can be downloaded from Product Web Site

Hi Nicolas. Normally, this problem comes from a loose screw and roller that makes the mechanism gets stucked.

Sorry, you have not said where your country of origin nor which lens needs repair, thus we cannot make any suggestions. There are numerous repair shops around the world. Doing a Google/Bing/Yahoo search will provide you repair shops; one may be close to you. Also, depending on the lens you may be better of replacing it with a more updated better quality one; just a thought.

I'm not sure why you want to know this. It is a lens fitted for a Pentax camera. Nikon does not make a 20-90 mm Macro lens. Then it has a aperture from 3,5 to 5,6. It never would work on a Nikon, unless you have an adapter and then it still only could be used in manual mode. You have to do all settings, manual. not only the focus, but also the aperture, shutter time and ISO settings. I use a Nikor 24-85 mm f 1:2,8-4 D Macro, 1:2. With this lens when in focus the object is only half the size of the original. I think it comes close to the 28-90, but it is at least 5 times as expensive. When you are really in for macro photography, you better choose a prime macro, like the 40 or 60 mm from Nikon. both are 2,8 and not as expensive as the zoom version. The results will be much sharper. When you are talking of equivalent, I don't know what part should be equivalent, because that is important to know. As long as the focal length is the same and the aperture, you can make the same perspective pictures on the same distance. Only when you buy a DX, or even e lans for a four thirds camera, still the focal length will be the same, but as soon as you put these lenses on a camera with a larger sensor you will get massive vignetting. A lens made for a full frame (35mm) camera, when used on a DX or four thirds camera, will give the same perspective and will give no vignetting on a camera with a smaller sensor.

what do you mean, lens support? - a 75-200 is not usually long enough to warrant this, if you mean a support bracket to mount the lens to a tripod, instead of a camera mounting point? btw - sigma made all or most of the lenses for quantaray, so you might try looking this one up that way as well.