03-24-2012, 07:51 PM
[quote name='jenbenn' timestamp='1332601995' post='16993']
your test mirrors my real life observations. Resolution drops off midframe and than recovers towards the corners and borders. corner performance being a tiny bit better than border performance.
one thing id like to add though. AF precision is virtually none existant. it is almost impossible to get an in-focus shot at f1.8 -f2.5. no amount of af-micro-adjustment helps as focus is not consistently off in one direction. before somebody calls bad techbique: i always get spot on focus with the 85mm 1.8, so it definately is a lens issue.
[/quote]
RSAs ... they are mentioned in the text.
your test mirrors my real life observations. Resolution drops off midframe and than recovers towards the corners and borders. corner performance being a tiny bit better than border performance.
one thing id like to add though. AF precision is virtually none existant. it is almost impossible to get an in-focus shot at f1.8 -f2.5. no amount of af-micro-adjustment helps as focus is not consistently off in one direction. before somebody calls bad techbique: i always get spot on focus with the 85mm 1.8, so it definately is a lens issue.
[/quote]
RSAs ... they are mentioned in the text.