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UV Filter stuck on lens!

Jennifer Swanson , Nov 12, 1998; 09:49 a.m.

Somehow a UV filter has become stuck on the end of my Canon USM lens; I'm afraid to mess with it any further in fear of breaking the lens. Are there any tricks to fixing this problem, or am I better off hauling it into the repair shop?


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Bruce Rubenstein - NYC , Nov 12, 1998; 10:06 a.m.

If it's not "stuck" too tight, take the lens off the body, take your mouse pad (or something like one) and flip it over so the rubber side is up. Then push the lens, squarely, into the rubber pad and twist it to unscrew the filter.

Wee Keng_Hor , Nov 12, 1998; 10:11 a.m.

There are times when it was so cold that the ring contracts and become stuck to the lens. Just warm it up and it will lossen up naturally.

A. B. , Nov 12, 1998; 10:17 a.m.

A Friend of mine had a similar problem with a poloriser. We put the lens in a plastic bag and submerged only the filter in hot water and off it went.

Bob Atkins , Nov 12, 1998; 10:34 a.m.

For a couple of $ you can buy a "filter wrench" at any decent camera store.

archie alcantara , Nov 12, 1998; 10:45 a.m.

I've tried successfully using a rubber band around the filter and twisting it. This of course depends on how big the filter is relative to your hands.

Ed Nicholson , Nov 12, 1998; 11:05 a.m.

try checking at your local dollar store and grocery store for a rubber kinda cone-shaped jar lid remover. they are less than a dollar and are useful for getting a grip on lots of things!

Danny Weber , Nov 12, 1998; 12:18 p.m.

The "trick" is: don't squeeze the filter ring. This deforms it and makes it even harder to get off. Take a rubber band between your fingers and grab the edge of the ring and rotate, or follow the above- mentioned rubber jar opener technique.

Y. Dobon , Nov 12, 1998; 01:18 p.m.

On jar lids, tripod heads and recalcitrant filters I've successfully used a pair of rubber gloves for added traction.

My guess is that someone at your local pro shop would help you out without charging you. If you don't want to feel guilty about taking something for nothing, just buy a few rolls of film, batteries, etc.

Dan Brown , Nov 12, 1998; 02:07 p.m.

It sounds from your question as if you are afraid that adding more torque is likely to damage the lens before the filter comes loose. If that is the case, then all these gripper aids aren't what you are looking for. You want to release the threads.

Well, one way to do it is to use penetrating oil, such as WD-40, however that may add an undesireable "user installed" lens coating ... ;-)

Thermal approach may be better. You want the lens thread to get bigger and the filter threas to get smaller. So you want the lens warner than the filter. Simple, let the whole set-up come to room temperture, or maybe even warm it a little somehow. Electric blanket? Then, freeze a slab of ice. Pie pan full? Next press the warm filter ring onto the slab of ice. Wait a few seconds, then use one of the aforementioned gripping devices to unscrew the filter. If that fails, then try again, but use a gentle tapping on the edge of the filter to jar it a little before unscrewing.

If this doesn't work, consider having a professional (preferrably and insured one) get the filter off for you.

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