Lens/camera electrical contact cleaning in the field

Started Nov 17, 2012 | Discussions thread
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AnthonyL
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Lens/camera electrical contact cleaning in the field
Nov 17, 2012

For the first time my 55-250mm IS wouldn't focus.  Aperture, speed within range and good contrast subject.  Little circle on right in viewfinder flashing.  Ended up putting 18-55mm IS on to get the shot.

Anyhow I think it may just be the contacts (at least I hope so) but I'm on my travels so don't readily have all the recommended bits to clean them.

In my bag I have a Viking Lens Cleaner (spray), Viking Lens pen, Viking soft cloth.

Any of that safe to use?

I've always put the lens caps on when the lens is off camera.  Not sure why this has happened now though I am in the tropics so maybe that has something to do with it.

 AnthonyL's gear list:AnthonyL's gear list
Canon EOS 450D Canon EF 50mm f/1.8 II Canon EF-S 10-22mm f/3.5-4.5 USM Canon EF-S 55-250mm f/4-5.6 IS Canon EF-S 18-55mm f/3.5-5.6 IS +1 more
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