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.
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.
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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!
error 99 may be the only error that the camera can identify with the problem. Generally this is dirty contacts in the camera and on the lens. The fix is to rub them with a pencil eraser and ensure no rubber swarf gets inside the camera. ( Hold upside down and use a blower and brush for cameras after doing it. Do the same to the lens contacts and re position turn on camera and see if it works ok now. Please rate my help++++Thanks for using FIXYA
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!! :) :)
I have faced similar problems previously with my Canon 20d and Sigma 170-500. Its even more annoying to see it happen in field while it would be okay back home. I was told that it is electronic compatibility problem instead of complaining the best was to change the lens and hence bought a 100-400 and happy ending.
Hey shutterbug72, According to the manufacturer the first thing you should try is cleaning the lens contacts with an eraser. If that doesn't work you could try removing the battery and reinserting it to reset the camera. It seems to me that if there was a compatibility issue going on you should have seen that from the start. As far as what lens you should buy both Tamron and Canon make very good lenses, but with Canon lenses you shouldn't ever have compatibility issues. I hope this helps! Sincerely, Allan Go Ahead. Use Us.
I know what you two are talking about. I ordered a Canon EOS 300d from a site called "Keh" and I had never used one before... so I get it in the mail on time. The camera works fine for a few minutes then I get an "error 99" and can't do jack with the camera. I researched online and even called keh ... I read and heard that it has to do with the lens... so I sen't the camera back and got my money.
You're probably right about the lens. Tamron lenses have a flexible circuit that drives the aperture blades. The aperture might need to be cleaned or the flex might be worn out. Either case needs a repair shop to correct.