This lens is very low and has not yet IS USM. It follows that you should start with the ISO value at 200-400 and the rule applies focal length = shutter speed. That is photographed at 300 mm focal length = 1/500. You then take another intent against stray light and has very good and sharp images. Even a little more aperture can not hurt.
My test photos were all sharp and without defects. I can only recommend the lens. I have above four images eingestellt.Ich motives have adjusted from close range often used to 100 meters. On 30/10/11, it was foggy. I think the results are fine.
