12-28-2013, 12:13 AM
The local test is only good enough for "obvious" decentering in the image center. It does not cover the borders. Thus if you got a tilted focus plane, you will not be able to detect this with this test.
However, honestly I'm not aware of an image stabilized lens sample that I'd call a "golden sample". You will have to live with a slight decentering in any case. Hunting for the golden sample is hopeless IMHO. Thus if you can just spot a slight softness it should be Okay.
Maybe take a sample of a wall at 70mm f/4 of a building and post it here (or email it).
However, honestly I'm not aware of an image stabilized lens sample that I'd call a "golden sample". You will have to live with a slight decentering in any case. Hunting for the golden sample is hopeless IMHO. Thus if you can just spot a slight softness it should be Okay.
Maybe take a sample of a wall at 70mm f/4 of a building and post it here (or email it).