Question about Quantaray 135-400mm f/4.5-5.6 for Nikon AF

1 Answer

Lens shoots while aiming downwards, no while level or upwards

I just bought a used Quanteray 135mm - 400mm lens from Craigslist.

When I tried to shoot with it with my Canon 20D, it only works when the camera and lens are pointed in a downwards direction. When the camera is held level or when it is aimed in an upwards direction I receive an Error99 message.

I have 6 other lenses that I use with the same body and do not receive this error.

What would you reccommend?
Thanks much!


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Sounds to me as if some of the electronic connections are not completing the circuit properly - have you tried cleaning the contacts on both the camera and the lens carefully with a lint-free cloth and some IPA ?

Posted on May 22, 2017


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Posted on Jan 02, 2017


SOURCE: Canon error codes

Canon built their new Digital cameras so that osome older non Canon lens won't work properly with them. I have a Quantary 70 - 300 f/4 - 5.6 that I used on my Rebel film camera, I bought the Canon 350D and ... You guessed right I got the same error code as you did. I palyed around with it untill I figured ou the problem - You must shoot with the apature open all the way. Move the knob to AV and open the apature as wide as you can - You'll notice you can now take pictures. The lens is somewhat crippled now (only wide apatures) but at least you now have control and understanding of the error code. Hope you find this usefull. J.

Posted on Aug 26, 2007

  • 1 Answer

SOURCE: I get an error 99 message (turn power switch to off then on again or re-install battery)

I posted a problem, and have found a partial solution, at least if you get the error while shooting. After cycling power to clear the error, try lowering your ISO setting - it may need to be lowered a bunch, so keep trying. Mine cleared up when I went from ISO-800 to ISO-200. My testing is limited, so this may be only a partial fix.

Speculation (based on working with electronic sensor arrays): I believe the camera is indeed trying to protect the sensor. ISO basically sets the sensitivity of the sensor to light. The camera probably calculates the expected sensor signal before each shot, regardless of mode. Sensor signal is a function of ISO (sensitivity), shutter speed (integration time), aperture, and light input. It has influence over shutter and aperture, but none over ISO. It likely gets to a point where it can't solve the equation, so shuts down and gives an error, as user-error is not the only reason it could fail to solve the equation. Going to M would likely exacerbate the problem. I hope this helps.

Posted on Sep 06, 2008

SOURCE: Quantary Tech-10 75-300mm use with Canon Rebel XTi

Contact Quantaray. they fixed it for just shipping and handling.

Posted on Oct 18, 2008

  • 67 Answers

SOURCE: Problems getting Quantaray AF 70-300mm lens to work with Canon xt

you could try cleaning the contacts on the camera and lens with an pencil eraser

Posted on Dec 16, 2008

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SOURCE: I have a Quantaray 28-200mm lens that I used on my

The short answer is no.

The Long answer is maybe. You'd have to call some stores that carry the Quantaray products. Get phone numbers for the distributor, warranty repair shops, and maybe Quantaray home offices which may be in another country. Then you can find out if they still have the mounts for those lenses in stock, can it be done, where to send it, and how much. Mind you, they may have to totally change the electronics and the motors inside the lens too.

Posted on Jan 03, 2010

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