350D and Sigma lens

[chris vd merwe]

My 170-500 Sigma lens don't like my new 350D,or the other way around .

It fokus,everything but as you take a pic,there's a Error 99 on the LSD.

Any help please,my canon lenses,some old,works fine

[charlieh]

How old is the lens?
This is a problem using old(er) versions of Sigma (and possibly other non Canon lenses) If its old (3 + years) you will need to get the lens re-chipped to work with the 350D. Only problem is this rechipping may not allow the lens to work with the 350D's replacement.

When I bought my 300D I bought a 170-500mm and had no problems. A friend of mine also bought this lens some weeks after buying his 350D so the new versions of the Sigma lens are compatable with current digital Canons at least.

I have had reports that long term compatabolity with even new (or rechipped) Sigmas may still be an issue

Charlie

[chris vd merwe]

Thanks Charlie.

Yes I think the lens might be older than 3 years.Will send it in it is useless at this moment anyway!

[Brad]

I have / had a Sigma 170-500 APO on a 350D. If you have the same lens ... sell it. I found that shooting at anything over 400mm it was as soft as marshmellow!