Just got my grubby little mitts on a Sigma 70-200 OS. Spent a while trying to work out what was the best bet for me the Sigma or getting a second hand Canon Mk1 IS. Pulled the trigger on one of these and I am very pleased.
Focus adjustment is spot on for all my bodies and the autofocus and IS work superbly. Colours and contrast are very nice. It is razor sharp from F4 onwards but F2.8 although not as sharp is still very, very good.
So long as it keeps working as it is now, I doubt i will ever feel the need to change for the Canon.
If you are considering one of these, I wouldnt hesitate in recommending one!
Focus adjustment is spot on for all my bodies and the autofocus and IS work superbly. Colours and contrast are very nice. It is razor sharp from F4 onwards but F2.8 although not as sharp is still very, very good.
So long as it keeps working as it is now, I doubt i will ever feel the need to change for the Canon.
If you are considering one of these, I wouldnt hesitate in recommending one!