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Problems with decomposing/sticky rubber on Canon gear

Started Nov 7, 2017 | Discussions thread
John Sheehy Forum Pro • Posts: 26,698
Re: Problems with decomposing/sticky rubber on Canon gear

threw the lens wrote:

Any pale residue on lens rubber I've had has always come off rubbing with alcohol solution and cotton wool, though it tends to leave the rubber slightly shiny after.

I read some people think it's the mineral oil softener in the plastic leaching out, some think it is reacting with skin minerals in sweat.

That might explain the sticky rubber on my Microsoft cordless mouse, or my Canon 8x30 IS binoculars, but I have also had this on the bottom of an electronic device that doesn't get touched very much at all, so it may just be time or some chemical in the air that does it in some cases.

The white powder effect I've seen, but I do not care about that; only the sticky rubber issue is a problem to me.

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