Ques on Sigma lens compatability w/ 5D

[rhawks]

Recently bought the 5D with 18-70mm, expecting to be able to use my Maxxam lens that i have been using on my Minolta 7000i film camera. Only the 35-100mm minolta lens will work on the 5D. Neither the 50mm macro (Sigma AF) or the 24-85mm (Sigma AF) will engage AF functions on the 5D.

So non-Minolta AF lens typically have problems?

[beachluvr]

I'm working with Sigma on some answers to compatbility with the 7D and 5D. Others have questioned whether a DT lens will work with AS with some valid technical concerns. Yet I hear Sigma introduced their 18-200 with a Minolta mount. Stay tuned.

[coldrain]

Some older (Sigma and other make) lenses do not work on the KM DSLRs, because the communication does not go flawlessly. New Sigma lenses with KM mount will work though.

[laurenz]

does anybody know whether there are any problems with the sigma 15-30mm F3.5-4.5 DG?

Laurenz