Error code WHEN I USE MY LARGER LENS I KEEP GETTING ERROR CODE 01. IT SAYS TO CLEAN THE CONTACTS BUT I AM WONDERING SINCE IT IS JUST WITH MY LARGE LENS IF THERE IS A PROBLEM WITH THE LENS? IT IS NOT A CANON LENS BUT IS MADE TO FIT THE EF AND EFS? WITH THIS MAKE A DIFFERENCE? I USED THE LENS ON MY 35MM FROM CANNON AND NEVER HAD A PROBLEM. I AM NOW TRYING TO USE IT ON MY DIGITAL XS?

For error message 01 the manual says: Communications between the camera and lens is faulty. Clean lens contacts.
Solve: Clean the electrical contacts on the camera and lens and use a Canon lens.
SO if you are using a different lens or a non Canon lens this could be what is wrong.

If you never changed a lens, it still can be that something went wrong in the communication between the camera and lens. Just careful remove the lens and with a dry and lint free cloth, clean all contacts on the lens and in the camera. While working on the lens, close the camera with the camera cap, or put the camera face down.
Don't use anything sharp while working on a lens or a camera.

ERR 01 is a lens to body communication error. Clean the lens and body contacts (put a small amount of alcohol on a Q-tip - do not use rubbing alcohol!!!). Try again. If that doesn't work, problem may be in lens or body. Using the flat of your fingernail, push in the contacts on the body inside the mirror box to clean any tarnishing between the contacts the the circuit (they are spring loaded). Try another lens - if the other lens works, then your problem is in the first lens. If it still gives the ERR 01 code then the problem is in the body.

Has the camera been impacted or had water/liquid spillage?

Simply clean your camera lens contacts

Here is a tutorial , how to clean your camera lens contacts

http://www.youtube.com/watch?v=wUt-K6w7lc0

Good luck and regards

Rob, Error 99 is Canon's catch all error code, yes my first impression would also have been to clean the contacts but something else that is happening is the camera firmware may need to be updated to handle that particular lens. Camera updates are free on the Canon site and actually can solve a lot of hidden processing problems.

That lens isn't really suitable for your 450d as it's an APS-C sensor size with a 1.6 crop focal factor which will give you more like a 24mm focal length.

You may also want to format the memory card and clean your battery terminals both the battery and the contacts in the battery compartment.

Best little cleaning item for cleaning contacts is a pencil eraser (new) lens contacts or battery something about the soft rubber cleaning off the most suborn dirt and electrolysis.

Don't use a "used" eraser obviously it will transfer the dirt to the contacts over removing what you want.

Hope these techniques work they have for me

Error 01 is generally associated with camera unable to communicate with lens. Could be contacts need cleaned; since lens is new contacts on camera are more likely starting point for cleaning. But, common issue is failure of something in the lens, but that seems unlikely as it is new ... but it could happen. You might search for other Canon Error 01 comments/solutions. Failing a solution from that, time to contact SigmaUSA repair to have them inspect/repair under warranty.

Error 01 means that communication between camera and lens is faulty. Try to clean lens contacts.

Try reading this.

Hey there derf69, the error code "err 01" indicates the need to clean the lens contacts, which in your case you have several. I suggest you completely clean the contacts using a contact cleaning solution which dissappears completely. you can also use a clean eraser to effectively remove any resilient buildups. I suggest you completely disassemble your lens configuration, and rebuild, once all contacts on the lens and camera body have been cleaned. There is also a possibility that you may have an incompatibility problem. If the cleaning does not help, please let me know and provide the exact model name and number of your camera, lens, and converter. Good Luck

reset camera by removing battery completely for about 10 seconds.
otherwise, time for service.
sounds like a processor board issue.
you can use a contact cleaner sparingly, available from frys electronics or any other electronic reseller like radio shack.
good luck
mark

keep getting an error code E:01-10