Filter cleaning

Hi guys,

I was out walking with the dogs last week, one of them managed to flick a spot of wet mud onto the clear filter of my sigma 10-20.
I left it well alone until I got home. It had dried solid by that time so I soaked it until soft again and gently wiped it away with my finger ensuring not to push it across the glass. It doesn't appear to have scratched the glass but if you hold the filter at certain angles to the light you can see a smear / water mark. I don't think it will affect image quality but being as its a fairly large / expensive filter I would like to get it back to new if possible.

I've tried a lens brush and pen but can't seem to shift it.

Any ideas?

Thanks

That's great, I'll give it a to later. I was a bit worried about applying any kind of chemicals in case it affected the surface .

Cheers

I got some wipes and it's now back to new! Excellent bit f advice! Cheers Steve!

Hi Renster Sir, that was good news getting rid of the smear. But what wipe did you use?
I had a similar problem once, so I used the next best thing I had - Sears Lens Fluid, and it worked. I have lots of old filters, and prism lenses (multiple images) which I don't use much. I found them with some kind of fogginess on them. They cleaned up pretty good with the Sears Lens Fluid.
CAUTION: Never use Hospital Alcohol or Rectified Spirit, as they have some kind of oily additive in them.
At one time I bought Kodak Lens Cleaning Fluid and Lens Tissue.
Regards.

Hi nanhi, I used lens wipes that I bought from boots pharmacy.

Cheers

ROR is about the best lens and filter cleaner.

It also cleans camera bodies.

http://www.ror.net/

Available from:

http://www.newprouk.co.uk/ROR-lens-cleaner.html

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I also use lens wipes, the ones I currently have came from a discount shop and IIRC cost me £1.99 for 100. The brand name was Zeiss although I doubt they are from the camera manufacturer of the same name

Not had any problems with them whatsoever and they're also invaluable if you wear glasses too.

If it's really dirty send it to this man

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