6 out of 10 points and recommendedExcellent results from 200-500, no distortion, CA or loss of detail.Difficult to hand hold at full extension.
I have been using this lens on a Sony A700 and have never had an issue with the quality of the images. I do wish that the lens has SSM and a much faster focus. With that said, I found for my sensor setting the ISO at 800, SS at 500-1000 and aperture between F9\F16 really improves the sharpness of the images. From my experience with this lens on the A700 ISO 800 and 1600 seems to be the best fit. On the down side the huge hood far to large, in fact, during overcast days, or if the sun is at your back using it is not necessary. I have learned to manual focus with my drive button hand since the focus ring in neat the body, make for a much quicker focus response. Also, I never shoot in modes other than A or M with this lens and I always use Spot metering. These things turn the lens and its use into a fine tool on the camera I use.reviewed January 4th, 2010 (purchased for $1)