Here are the test results at 50mm centre & edge definition at f5.6 & f8.0 and similarly @ 70mm.
I so wanted this lens to shine, but now it may be my imagination, by my eyes tell me that my 17-85 is sharper than the L series lens
I did do some more tests outdoors with a landscape subject and then the L Series did outperform my lens, but I can't photograph portraits focused at infinity.
Is this short focusing performance differential typical, have I got a particularly good EF S lens or is the L series faulty
