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Canon EF f1.4 won't focus, despite my singing

Started Mar 19, 2013 | Questions thread
nsrg New Member • Posts: 4
Re: Lens repair

If it's under warranty then obviously that's the way to go, but if not then I'd recommend fixing it yourself. Mine sat around for 2 years broken and I replaced it with a sigma, but then I stumbled across a few YouTube videos and fixed it in one evening over just a couple hours going intentionally slowly. Search YouTube for relevant topics and you'll find several helpful videos. It only requires some precision screwdrivers, which you ought to own anyway out of principle and a bit of effort. The "fix" is to remove and remold a cylinder with a helical cut in it that gets mildly bent and results in too much friction on the focus mechanism. It's really worth your effort. Mine was flawless after the fix.

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