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EF 24-70 II returned from service - need advice

Started Feb 4, 2019 | Questions thread
ffabrici Senior Member • Posts: 1,353
Re: EF 24-70 II returned from service - need advice

Send it back with your test photo's and ask for a re-calibration. I have done this with a 70-200L IS f/4 which was visibly worse after getting the IS unit replaced.

Canon claimed that they hadn't changed anything except the IS unit which should not change/affect the overall optical performance, because it is an optical module replacement. It clearly did change to the worse and it was much better after the re-calibration.

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