Testing Lens Sharpness?

The_Caper

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Evening all:

After buying a new lens the other day I was wondering if anyone could tell me what the best way is to test the lens sharpness out to find out if I got a good or bad copy of the lens? Is there certain settings that are better to use on certain subjects.

If anyone has any ideas I sure could use the asisstance.

Thanks in advance all.
 
Either print out a sharpness indicator, or point the lens at a screen door. A lens will react very different at every aperture and focal length.

Remember to rule out all problems. So you MUST use a tripod at higher apertures, ISO100, and use mirror lockup feature and a cable release.

In reality though if you got a bad copy of a lens it should be pretty obvious, if not then your sharpness will probably be similar to www.photozone.de 's graphs.
 

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