[nis]

Just buy my Tammy yesterday... base by numerous review and user experience, and mostly from this site... so far I am happy to tell that this lens is tack sharp...  but as a beginner my self, I notice that on every focal length require different fine tune.. is this normal? my camera is D7000

 

getting annoying really, at the end, I decide to choose only 1 focal length that havemaximum sharpness and others as tolerance..

 

any thought?

 

Nis