I have a Sigma 400mm 5.6 that registers Error 99 whenever I try to use it with my Canon 300D or my Canon 20D. Oddly, the problem doesn't occur when I attach the lens to the 5D, but that's not the body I want to use it on.
I'm going to Costa Rica and would love to take this very lightweight lens with me, but can't it if won't work.
I have the same lens and had the same issue to begin with. The problem is that the lens is fixed at 5.6, so when the camera tries to automatically change the aperture, it is unable to and this causes a crash.
If you set the camera to one of the manual aperture settings and adjust the aperture to the lowest possible whenever you change the zoom level, it works fine. It's only a slight inconvenience and once you get used to checking before taking a photo, it's no problem.
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It's a frustrating catch all error and needs service.The camera may have any one of numerous issues or lens issues. If you have more than one lens, see if the error occurs with both lenses on. If not then it's a lens error. A camera repair facility can plug unit the camera and download a more accurate troubleshooting code. Royal Camera Service in Hanover Park, IL is good source for this problem. The replaced the shutter on my 20D when I got the error 99 code.
Hi It is well known that some lenses made by Canon for the EOS film camera range do not work well with digital SLRs. Canon lenses work fine but it may be worth checking if the Sigma has a known problem with EOS digtal bodies.
Error 99 is a NONSPECIFIC error message. It is almost always associated with the LENS. I first got this error on my EOS 20D whei I tried to use an older Sigma zoom lens (7 years older than the camera). I don't use off-brand lenses with my Canons. Try removing the main battery first followed by the time & date battery which is hidden in the battery compartment beside the main battery. This will reset your camera. Good Luck!
To isolate the cause of the issue, do the following: - 1. Turn off the camera. 2. Remove the lens, battery, and CF card. 3. Allow the camera to sit without power for approximately 20 minutes. 4. Insert only a fully charged battery, and turn on the camera. 5. Depress the shutter button as you would to take a picture.
Does the “ERR 99" message appear? If so, the camera may be faulty and requires a service. If it does not, then: - 1. Turn off the camera. 2. Insert the CF card. 3. Turn on the camera. 4. Format the CF card in the camera. 5. Depress the shutter button as you would to take a picture.
Does the “ERR 99" message appear? If so, then the CF card is faulty. Try a different card. If the message does not appear: - 1. Turn off the camera. 2. Clean the gold contacts on the lens by GENTLY rubbing them with a pencil eraser or soft cloth. Keeping the camera face pointing down, also clean the gold contacts on the camera, being careful that you do not let any debris fall into the camera body. 3. Reattach your lens. 4. Turn on the camera. 5. Depress the shutter button as you would to take a picture.
If the “ERR 99" message only appears when one particular lens is attached, then that lens should be examined by a service technician. If you see the “ERR 99" with a different Canon lens attached, then the camera is faulty and should be serviced.
take out battery for a few mins and that resets the
error, well it worked. or Before I reset it, take off the lens and
put it back on. i heard that some have problems with the lexar cards. http://www.lexar.com/support/cust_advisory.html in short, format the card every so offten in the camera and see if that fixes it. also try a firmware upgrade if your 20D has highest version get this at canon website
I get error 99 sometimes on my 20 D but it?s usually to do with a lens that is attached. Sigma lens have been known to cause error's. If it's not that or dirty contact on the lens then it could be a more serious problem. I would at least check it out with a canon dealer/repair centre.