Drudkh said:
You are right!!, but there are so many factor too... the wind at the time and the lighting was not consistent...
But generally, they are similar if not the same!!
I don't think it draw so much power.... My last assignment on portrait with 3 models, using just this lens, we took over 450 picts using just one NP-400 battery... (lcd off, AS on 30%, flash 90%). All I do is check for exposure in the first 10 photos, then switch the LCD off and keep shooting and look at the image when I got home.
AF speed for HS & non HS is not far different... Sulhan's illustration is correct because I notice the non-HS have longer travel... but it locks on the focus pretty darn fast... no horse run if you compare with 70-210 f4. Specially in low light condition.
I have a friend who owns a SSM, he told me that the AF between HS & SSM is pretty similar, but because it is almost silent, it always feels slightly quicker on the SSM.
I have no luck of getting a SSM yet... but hopefull will get a chance to own it soon..
Hart