Quote:
Originally Posted by dpastern
http://forums.dpreview.com/forums/re...ssage=20274121
Optical quality seems OK, but fixed f ratio and no AF and no communication between the lens and mount.
Alex - AF has been around for only 20 odd years, how do you think pros managed at sporting events with the older Nikon F and Canon FD lenses? AF is a great bonus, but it is possible to manually focus on fast moving objects with a lot of practice.
Dave
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I know a prof sports photographer , he told me autofocus if often more hassle than it's worth , and he frequently uses his long fast lenses in manual mode because on many occasions the lenses hunts too much and you can loose the image before autofocus finds the focus, whereas an experienced camera jocky can get a very good focus manually in less time.
You use the depth of field to give sharp focus over a range of distances.
If you want better depth of field - for more forgiving focus - you stop down the lens a few stops.
Would I buy the lens ? .... no, I don't need a lens with that focal length range.