Question about Quantaray Tech-10 70-300mm f/4.0-5.6 for Canon EOS

2 Answers

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

While indoors, I can focus and take pictures using this lens. However, when I try to take pictures outdoors, I get an error 99 message (turn power switch to off then on again or re-install battery). No picture is taken. I spoke with a Canon tech who said error 99 means there is a communication problem between the camera and the lens and he couldn't help me since the lens was not one of their products.

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  • CO585 Apr 12, 2008

    I also get the Error 99 message, but it happens as soon as I turn the camera on. Does anyone has a solution for this yet?

  • cupiggy May 22, 2008

    I too, while on vacation no doubt, received this same message. In the beginning of my photo shoot, no problem, but after about 8 photos, this message kept appearing. What is wrong??????????

  • sabinerat Jul 31, 2008

    I get the same reading with a 200mm I picked up anybody try talking to Quantary

  • gdm0 Aug 01, 2008

    I'm having the same problem with this lens on a Canon Rebel XSI. I get the same error message with a Quantaray Tech-10 24mm macro lens. I can usually take a few shots then the error message comes up consistently after that. The error specifically states that there is a communication problem between the lens and camera. This likely has to do with the use of older lenses on newer digital camera bodies and I doubt that there is any sort of "fix" for the lens ... which obviously presents a problem for anyone owning Quantaray lenses and updating their camera. I'm going to look at replacement with Sigma or Tamron.

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Hi all
On most lenses the way to test if your old lens works on a cannon digital to set the camera to AV then set the iris to the small setting ie F16/F22 then use the stopdown button.
Things that might happen
1 The lens will close down OK
2 The error 99 will show,will need are rechip if avaliable
3 Nothing happens, will need a rechip

Q.Why will it work inside but not outside.
A. Inside the camera needs light so the iris is full open, outside the lens needs to close down and if not compatible it is unable to close down. will need a rechip

Posted on Nov 06, 2008

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

Posted on Oct 18, 2008

  • Bill Hawley Apr 23, 2011

    Also, I am using a Quantaray Tech-10 75-300 with my XSi and the solution to any errors is to put the camera in Manual (M) shooting mode and you will not experience any more errors. I usually use manual mode anyway, but I noticed I would get the "ERROR 01" when using it on any other setting besides the "M" manual setting. I can assume it is because the camera is trying to control the iris and it cannot close or open the iris as much as it thinks it needs to so it throws the error. Set camera to "M" and your errors are gone! :)

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