Seeto said:I am a user of 3 Sigma EX lenses from 17mm to 200mm. They are really sharp. I've done loads of weddings here in the UK and all the pictures are razor sharp and the colours are great too. I have also done enlargements of up to A1 size! No complaints about them.
However, I've heard from a photographer here in the UK who uses Sigma EX lenses with his 10D, that the Sigma lenses keeps breaking down. Aparrently, Sigma EX lenses are fantastic, but they are not really built for high work load if you are a professional photographer.
To add to it, I'm a lil worried about compatibility of Sigma lenses to the new 7D. I'm not sure of the lenses need to be 'rechipped' to be compatible to the Dynax 7. Sigma lenses seems to have compatibility problems with Canon cameras. Not sure if they have been fully rectified yet.
I really hope that I can easily switch to the 7D... when I get enough money that is! hahaha!
Matt
I've heard cases of HSM in Sigma lenses breaking down. Replacing the HSM motor cost quite a bit.
Well, Sigma lenses for Minolta mount are body driven. There's nothing for it to break unless you smash it.
Cheers!