Sticky focus ring on 17-55 2.8. Any ideas?

Started Jan 30, 2013 | Questions thread
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Leonard Shepherd
Leonard Shepherd Forum Pro • Posts: 10,672
Re: Sticky focus ring on 17-55 2.8. Any ideas?

For those considering buying a second hand lens with a chance to inspect it,  it is best to check by taking pictures at all zoom settings, a range of focus distances, and at different apertures.

Take a laptop with you, download the images and critically examined then.

With the lens not attached to a body, use the stop down lever on the back of the lens to get maximum aperture and shine a bright light through the lens to check for dust or fungus.

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Leonard Shepherd
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