OK, i currently have an Canon Elan 7. for that camera i have a few lenses.. but not canon lenses. they are by manufacturers such as sigma, tameron, etc.. i have read that Canons auto focus lenses will work on the new digital body cameras(i am looking at getting a 20D), but they never say anything about the non-mfg lenses. does anyone know if they will work as well, or is this not a clear cut answer?
Thanks!
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April 23rd, 2009 at 6:39 am
There's not a clear cut answer. In general, most will work or can be made to work. However Canon doesn't support third party lenses, so they leave it up to the lens manufacturer to rechip a lens if it doesn't work with newer bodies. Go ahead and get the 20D and if a lens doesn't work, contact the appropriate manufacturer and get a price for rechipping the lens to make it work with the newer body. Since the 20D has been out for several years, you can search to see if there are any known incapability problems with a particular third party lens and the 20D.
Unfortunately, this is a price you sometimes have to pay by getting a third party lens. Physically it will mount on the camera no problem, but electronic communication may not take place as the mount is reversed engineered since Canon doesn't license (at least I don't think so) their EF spec.