Category Archives: USM

Focus hunting – on Canon 17-55 F2,8 IS


On this lens I have never seen this before – but the symptom was absolutely the same like on the 17-85 lenses, so I decided to “refurbish” the USM motor. At first, You have to take it out from the … Continue reading

Posted in 17-55 F2.8 IS, Canon lens, USM | 2 Comments