ERROR 99????

a friend just lend me a Sigma fisheye 2.8 for a couple a days... i tried on my 20D and it doesnt work gave me a error 99 on the screen...
The lens is damage? or
Help.

From memory (foggy), error 99 is described as an error other than the other errors in the manual. How useless is that. The advice is to remove and re-insert the battery.

I have had one of these with all Canon parts so I think they just happen.

Err 01 is a communications fault between the camera and the lens.

My tip. Re-attach the lens, re-insert the battery and see how she goes.

you might also try cleaning the mount contacts.

according to alot i have read error 99 codes are supposedly mroe likely to happen with a non canon lens, however i only use canon lens and i still get it from time to time, the suggestion to clean the contacts is a superb one, when i was riddled with this problem last year i gave it a good clean "using a pencil erazor" it worked fine for many months, i may need to do mine again .

Probably one of the older Sigmas that aren't compatible with the newer Canon digitals.

does it work fine at 2.8 but give you a error 99 at any other aperture/ if so, it's an older 15mm fisheye that needs to be re-chipped to work with the latest cameras.

blackviolet wrote in post #2010978
does it work fine at 2.8 but give you a error 99 at any other aperture/ if so, it's an older 15mm fisheye that needs to be re-chipped to work with the latest cameras.

How much does the re-chipping cost, and where can I find out where to send it?

I have a 28-200 F3.5 sigma that gave me this code on my 350D over the weekend..

The following Sigma lenses require upgrading for compatibility with newer EOS cameras, according to Sigma:
24-70mm 3.5-5.6 aspherical UC
28-80mm 3.5-5.6 mini zoom macro aspherical
28-80mm 3.5-5.6 mini zoom macro aspherical HF
28-80mm 3.5-5.6 mini zoom macro II aspherical
28-105mm 2.8-4 aspherical
28-105mm 3.8-5.6 UC-III aspherical IF
28-135mm 3.8-5.6 aspherical IF macro
28-200mm 3.5-5.6 DL aspherical IF hyperzoom macro
28-300mm 3.5-6.3 DL aspherical IF hyperzoom
70-210mm 4-5.6 UC-II
70-300mm 4-5.6 APO macro super
70-300mm 4-5.6 DL macro super
100-300mm 4.5-6.7 DL
135-400mm 4.5-5.6 APO aspherical RF
170-500mm 5-6.3 APO aspherical RF
8mm 4 EX circular fisheye
15mm 2.8 EX diagonal fisheye
24mm 2.8
28mm 1.8 II aspherical
50mm 2.8 EX macro
105mm 2.8 EX macro
300mm 4 APO tele macro
400mm 5.6 APO tele macro
500mm 4.5 APO
500mm 7.2 APO
800mm 5.6 APO
28-70mm 2.8-4 UC
28-105mm 4-5.6 UC
28-105mm 4-5.6 UC-II
70-210mm 3.5-4.5 APO macro
28-200mm 3.8-5.6 aspherical UC

What do you guys clean you contacts with?

steve maec wrote in post #2366509
The following Sigma lenses require upgrading for compatibility with newer EOS cameras, according to Sigma:
24-70mm 3.5-5.6 aspherical UC
28-80mm 3.5-5.6 mini zoom macro aspherical
28-80mm 3.5-5.6 mini zoom macro aspherical HF
28-80mm 3.5-5.6 mini zoom macro II aspherical
28-105mm 2.8-4 aspherical
28-105mm 3.8-5.6 UC-III aspherical IF
28-135mm 3.8-5.6 aspherical IF macro
28-200mm 3.5-5.6 DL aspherical IF hyperzoom macro
28-300mm 3.5-6.3 DL aspherical IF hyperzoom
70-210mm 4-5.6 UC-II
70-300mm 4-5.6 APO macro super
70-300mm 4-5.6 DL macro super
100-300mm 4.5-6.7 DL
135-400mm 4.5-5.6 APO aspherical RF
170-500mm 5-6.3 APO aspherical RF
8mm 4 EX circular fisheye
15mm 2.8 EX diagonal fisheye
24mm 2.8
28mm 1.8 II aspherical
50mm 2.8 EX macro
105mm 2.8 EX macro
300mm 4 APO tele macro
400mm 5.6 APO tele macro
500mm 4.5 APO
500mm 7.2 APO
800mm 5.6 APO
28-70mm 2.8-4 UC
28-105mm 4-5.6 UC
28-105mm 4-5.6 UC-II
70-210mm 3.5-4.5 APO macro
28-200mm 3.8-5.6 aspherical UC

Thanks! Does it cost anything for Sigma to upgrade them?