Hoya Cir-Polarizing Filter...sticks

[toddb]

I'm not sure if this is a common problem with some filters, but my new Hoya Polarizing filter sticks to everything I attach it to (I recently had a thread asking how to get remove it from my other filter and I had to use rubber gloves to get it off).

This is not good when I don't have a pair of rubber gloves with me. I try and leave it completely loose, but since it's a filter that needs to be rotated, some time it gets stuck. And I mean it just barely gets screwed on all the way and it's stuck. My B@H never gets stuck or any other filter I've tried.

So is this common? Is there something I can do to it that would help?

[toddb]

Maybe if anyone can confirm if they have this same Hoya filter. Maybe I just got a faulty one if that's possible.

[plato]

I have the Hoya Cir-Polarizing filter for my 28-135 and so far no probs, but I don't leave it on my lens for long periods, so I can't verify whether it sticks after leaving it there for a few days.

[RedvaneFox]

I've got a 58mm on a Canon 70-300 USMII IS. Normally it has a Jessops skylight on it but I have put a Hoya Cir-Polarizer on it for a day or so at a time (photographing aircraft on sunny days) and not had the problems you mention.

Maybe your lens?

[toddb]

Must be the filter threads or something. It screws on easily, but no matter if it's on my 28-135 USM IS, or my B&W UV filter, if it barely gets tightened, it is almost impossible to remove. I'll take it back to the shop I got it from and see what they tell me. Thanks for verifing that you don't have an issue with this particular filter. I didn't know if this was normal or not, but sound like it isn't.

[Marignan_1515]

it stick because the 2 surfaces in contact are metal/metal (not the screw, but the horizontal ring surface)

remove dust on the filter and lens end. use silicon greace on the screwpath and on the back surface of the filter ring (just a little bit), so that even if pressure is apply on the surface, it can still rotate and disengage. silicon doesn't hurt lenses if you put some by mistake on the lens. do it every 6 months / 1 year after cleaning

If you don't want to use silicon, try to cut a ring out of a soft paper (eg. risepaper) (very thin ring...you can put the filter on the sheet of paper and push a little bit to get the internal diameter mark. For the external diam. you'll need to measure the filter so that you don't have paper visible after assembly) and place it btw the lens and the filter. It should prevent the filter to stick to the lens (by avoiding metal/metal contact). The paper should stay in place on the filter when you remove the filter. If you cut it well, you probably won't have to change it ever. If you are concerned about esthetic, take black paper... try one ot the other and let me know

[toddb]

Thanks for the tips. Do you have a specific silicon I should get and where to get it?

I think you are right thought about the surface and not the actual threads are causing the problem. If I concentrate on pulling the to surfaces away from each other as I'm trying to unscrew it, it seems to come off easier. I think I was just grabbing it and turning it without doing this. But I think I will try the silicon as you suggested if I can find some so that I'm not out shooting and want to take it off real quick.

[Marignan_1515]

I don't know where to buy it, but you can find it pretty much anywhere. my 60ml (2oz) tube was bought back in France a few years ago. With the amount I use, this tube can last for 10 years!
In the US, you can probably find some at any hardware store (HomeDepot?) or also in IT or electronic shops (eg RadioShack/Fry's?). It's used to protect connectors or processor pins too http://www.radio-ware.com/products/i615.htm
I think it also used for boats(waterresistant and UV resistant), gun and watches maintenance.
I've seen it's now available as spray too (convenient!)
just take a good product (for IT or watch purpose is fine)

Do not put too much. I recommend to put the it on a clean fabric, and rub the filter ring smothly 1 or 2 time. Then rub again with a a part of the fabric w/o silicon.

some resources:
http://www.radio-ware.com/products/i615.htm
http://www.huntvac.com/catalog/pdf/sec_9f.pdf
http://www.tmpco-store.com/product.asp?3=14

[toddb]

Thanks for all the info, I'll see if I can find it and try it this weekend. :-)