Question about Tamron Zoom Telephoto AF 70-300mm f/4.0-5.6 LD Macro Autofocus Lens for Canon EOS

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AF 70-300 causes error 99 in my Canon 300D

I have been using my Tamron 70-300 lens with my Canon 300D for a little less than a year. A few days ago I started getting an error 99 in my Canon 300D when using the Tamron lens only. I have discovered that the problem only occurs when using the Tamron lens and not with other lenses I have. The lens only works without giving error if I use it in the maximum apperture. Once I use a smaller apperture (smaller than 5.6) I get the error 99. Also in a copuple of instances I have noticed that when focusing there is some noise in the motor as it reaches its maximum distance as if the motor was pushing beyond the limit.

Posted by Ren? Rodr?guez on

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Anonymous

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This is usually a torn flexible circuit or binding aperture in the lens. It'll have to go to a repair shop for replacement. About a $80 job.

Posted on Dec 06, 2006

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I am facing the same problem. The only way to avoid it is to use it at the maximum aperture between 180-300, thats 5.6.

Posted on Mar 17, 2009

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Anonymous

I have the same thing. When you press the aperture control button (only available on Canon) the diaphragm gets stuck and disconnecting the lens from the camera is necessary.
However, using the lens in the range 70-180mm works fine, also when stopped down. Using the 180-300 range with stopping down produces err 99.

My solutions:
- use the broken Tammy in the range 70-180. Avoid the 300 mm.
- buy a new Tamron 70-300. Having the old lens repaired is not worth trying...
- buy something more solid, like a Canon 70-200 L. Although the Tammy feels ok, its internals are not really built for the road.

Posted on Jun 28, 2008

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I have a Tamron Lens 17mm to 35mm and need an aperture flex to enable it to be repaired, where can I obtain this flex please can you help. Thanks

Posted on Nov 25, 2008

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Error 99 with a Canon 300D (original rebel) and Tamron XR Di II 18 to 200 mm lens. Occurs when lens is zoomed out. Does not happen with other lenses (Canon 18-55 kit, Canon 75-300). Cleaning contacts on...


Welcome to Fixya
Err 99 could mean several different things, such as... Memory Card, Lens or Lens contacts....

Here's what you can try:
Remove the memory card an enable "shooting with out memory card" and see if you still get the error. If it works your memory card is bad. Try another lens if you can. Clean the lens contacts with a pencil eraser (be careful not to get eraser dust in the camera body or in the lens). Worst case scenario is, Err 99 could be related to the shutter failing which would mean a trip to Canon.

Thank you for using Fixya!

If you need further help, reach me via phone at https://www.6ya.com/expert/elixirjose_00375ea24bd8141b

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Ive had my canon 300D for a few years now, and just recently its started giving me this "error 99" in the lcd screen what is the problem?


This is what the people at the canon tech support say to do for error 99



read this!! :)

The guy at tech support listened and then told me that the lens contacts were dirty and to get a pencil with an eraser on the end, just a regular old pencil with a red rubber eraser. Detach the lens from the camera, hold it so that the lens’ gold contacts are pointing down and lightly erase their exposed surface, cleaning them of any hand oil that might have gotten on them.

Do the same thing with the gold contacts inside the camera body. This is a bit harder but it’s doable: just hold camera so lens opening points down so no gunk falls in. Erase lightly. I used a lens cloth and dabbed at the contacts rather than blow them so as not to blow the erasings inside the camera.

I did this to each of my three lenses just to be sure. Lo and behold, it worked



hope this works for you!!!! have a nice day!! :) :)

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Sincerely,
Allan
Go Ahead. Use Us.

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