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Next OL lens test report: Canon EF 70-200mm f/4 USM L IS II
(08-05-2018, 11:17 AM)toni-a Wrote: No surprise, when it comes to tele zooms canon always did well.
Just a question: About the back focus, did you try AFMA ? If yes, how effective was it ??

I reckon the back-focusing in my sample is not related to RSAs if you mean that.
But sorry, I've to return the lens today so I can't look into this any further.
Chief Editor -

Doing all things Canon, MFT, Sony and Fuji
Did it back focus only in One-Shot mode (focus priority) or also in AI-Servo mode? Or did you not try that?

The lens does not only measure nicely (sharpness), but also is very nicely engineered:

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