Canon's error 99 is a catch all for several things the short answer is an electronic connection. Something isn't making contact and the first place to go is to the "gold" contacts between the lens and the camera body. Make sure the camera is off and remove the lens, place the camera lens side down on a clean dust/lint free surface or put a body cap on. Take the lens and holding as vertical as possible with the gold contact points down use a soft rubber red pencil eraser to lightly clean the contacts. You can remove any rubber dust and partials with a lens cleaning cloth NOT TISSUE. Make sure the area is clean of lint and dust, place the rear lens cap on or stand the lens up on a clean dust and lint free surface. the camera is a bit more tricky as you need to clean the contacts inside the mirror box. Hold the camera as best you can face down and again use the pencil eraser to lightly clean the contacts. Holding the camera as mus as possible lens side down. This will minimize any dust, dirt or lint getting into the camera body and eventually ending up on the sensor. Remove any rubber dust with a lens cloth not tissue and don't use any liquid, don't use a puffer either all that will do is drive dust partials into the camera. Once that's done install the lens, next remove the battery and do the same cleaning trick with the battery contacts, if you have a battery grip do the same thing. Okay now check out the camera if everything is go and works then you are good to go. If not then I would suggest doing a camera firmware update, all updates can be found on the Canon web site they are free and will correct any issues your camera has with the internal programming which may also be the cause of your error 99.
SOURCE: Error 99 with Canon
You need to have your Sigma lens rechipped. Contact your local Sigma representative, they should be aware of this, and will be able to tell where to take the lens to be rechipped.
SOURCE: Error 99
power off...remove the battery and power cord...keep power switch pressed for 10 seconds..replug the battery and turn it on...thats known as hard reset
SOURCE: canon 300d gives error 99 and does not work
Try the following diagnosis steps: -
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.
SOURCE: Hi my canon 300d camera is giving me a error 99
You need to go to the support section of the Canon website to download firmware updates.
SOURCE: Hello! I am getting an Error 02 on my Canon 300D
Hello
The problem is that the lens has become stuck in the barrel. There are some DIY solutions you could try, but the
probability is that you will have to get it fixed by a professional.
Use
these at own risk as it may further damage the camera.
Firstly ,
try connecting your ac adapter or usb cable.
Try holding the
shutter button while switching on the camera.
Look at the lens ,
and if some of the lens 'circles' is misaligned or not concentric then
try wiggling it (while holding camera lens down).
Try gently
pushing or pulling the lens when it extends but this is risky as it may
cause the lens barrel to slip out of its guidance system.
Another
way to do this is to place the camera lens down on a hard surface and
then power it up. Be sure to use a soft cloth or something similar as to
not scratch your lens or casing. Let the lens push the camera up and
down a few times and sometimes the little resistance provided by the
camera is enough to get things going again.
Try hitting your
camera near the lens on the body with the soft tissue on the palm of
your hand.
Other than that , I would take the camera to a repair
center for a evaluation to see if it would cost more to repair than to
replace the camera.
If it is still under warranty I would suggest
you take it in before trying any of these steps and remove any
off-brand batteries or accessories as some stores are really fussy about
warranty repairs on camera's with non-brand accessories.
You can also have a look at THIS link.
Hope
the advise is useful. please do not hesitate to let me know if you need any further assistance.
Regards
Andrea
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