I've just purchased a Sigma 70-300 F4-5.6 lens for a Canon EOS 450D. When I take a picture I get an error message ERR 01 Communication between Camera & Lens is Faulty Clean the Len Contacts. To take pictures I have to switch the camera off after taking a photo then on again to view what I have taken a photo of. Please help as I have very little knowledge of this sort of thing and would appreciate any help greatly... ty Tina oct.14 2009

Err 01: Lens to body communication error
1.The camera to lens communication is somehow being interfered with could be a problem within the lens itself, possibly the camera body, or something as simple as a smudged fingerprint on the lens mount contacts,
2. Check the lens and the contacts
3. Also check below link if you need a canon eos 5d service manual
http://goo.gl/1rXwuc

thanks

According to Sigma, your lens should be fully compatible with your camera although there will be the usual 1.6x crop factor as the lens is designed for a full frame sensor. This would not cause your Err 01 fault though so you should return the lens to your dealer for refund or exchange. Failing that, consider claiming on Sigma's one year international warranty. The warranty is ONLY valid if your lens was supplied with the Sigma Warranty card. All new Sigma lenses supplied through official resellers include the Warranty Card. You can find more details about where to send your lens for a warranty repair by clicking here.

Good luck, and please take a moment to rate my reply.

I have had the same problem with my 450D. I have been living without flash on my cam for a month. Until I realized that maybe something liquid and sticky by chance got where the flash is...so i just trid to hold uo the flash my insrting my nail into the small space between the flash and the camera and tried to press the flash button. IT WORKED!!!

Canon leads the current world market in lenses with their L-series lenses using fluorite rather than other manufactures use of glass. however, they do not make money when we buy 'other' brands of lenses and have kept a certain amount of their body to lens, coding as propriatary. the problem you stated is a common complaint with all second manufactured lenses and the only real solution is to put a canon lens on a canon body.

Err 01: LENS COMMUNICATION DESCRIPTION: This error occurs in the following conditions: When electronic communication with the lens cannot be established, after the EOS D300D is powered ON or when the shutter button is pressed halfway. When the lens diaphragm cannot be controlled during shutter release.

REMEDIAL MEASURE: Clean the electronic contacts on the lens with a clean, soft, dry cloth and check the mount interface switch on the body's lens mount for dirt or other damage. If this does not solve the problem, try another Canon EF lens or have the EOS EOS D300D examined by a qualified service technician. This error is similar to Error 84 on the D30.


rate me on this one...

thanks!

Err 99 usually means your lens contacts are dirty either on the lens itself or on the camera.

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.

check your card,change with new cf.That might fix problem i had the same issue and it was my card.

cleaning the contacts did nothing for me. what ended up fixing it was turning the camera to AV mode and setting to the highest f value. (f22) and then taking a picture. after that i was able to change it to what ever and resume as normal. hoping i dont see that error again.

If the lens is a super it may need a rechip

it may not be compatable with digtal camers to test set camera to AV get a iris of F22 using the stopdpwn button see if it stops down if yes it is compatable but faulty if nothing it not compat and need rechiping