I just got a Canon Xti DLSR as a gift to replace my old EOS 1000F 35mm. All the Canon lenses work, but I have a 28mm Sigma lens that provokes an Err 99 from the camera when I shoot.
A bit of web research suggests that I should get it re-chipped to work with the newer camera. I can find no details on where to go or direct reports from people who have had it done. Has anybody done this? you should ask Sigma for where to send your lens or where would be an authorized service center near you.
Here is their contact info (from http://www.sigmaphoto.com/contact/contac...
:
For Sigma customers in the US, please address all written correspondence to
Sigma Corporation of America
15 Fleetwood Court
Ronkonkoma, NY 11779
To request assistance by phone in the US, our technicians are available from 9AM to 5PM Eastern Standard Time, Monday through Friday. Call: (631) 585-1144
Customer Service Department call toll free (800) 896-6858.
You can also fax us 24 hours a day.
Fax: (631) 585-1895, (631) 585-7661 Before you spend a lot of money, take your XTi to a camera store that sells Sigma lenses and try out the new ones and see if the err 99 shows up. It may well be a Sigma/Canon XTi issue. | 