[LRflex] Re: formula for lens cleaning fluid

At 1/17/2010, you wrote:
>Hi Dave;
>that's an interesting story. I'm left asking myself whether the 
>microfiber cloths are abrasive. The "A" word, eh ? But, I guess that 
>, used sparingly, they'd be ok.
>My wife uses these white cleaning pads  (maybe 8X4 cm), i forget 
>what they're called, but they work great getting rid of tough dirt. 
>I wouldn't use one on a lens but i wonder whether the same principle 
>is at work.


I wouldn't use one on a lens, either.  They are indeed, a mild abrasive.

AS I understand it, the Micro fibres are softer, miniature versions 
of the "hooks" in the "hook & loop" fasteners (Velcro) ... and they 
tend to "snag" the dirt and hold it to the cloth.  Regular washing 
(but not ironing!) of the micro-fiber cloth will keep it working for 
many, many years.

As for the abrasiveness of it ... everything you put on a lens 
(clean, old, soft underwear; lens tissue, micro fiber cloth) is 
abrasive to some extent.  But the hard coatings on modern lenses are 
very tough, and it's not a problem.

>I just snagged a 28mm elmarit asph on the bay. I've been trolling 
>for weeks and one showed up at the best price I've seen. Calling 
>around, first, I tried to assess what I could get for my present 
>28mm elmarit, in the Vancouver or Calgary markets. Turns out that, 
>even after paying a consignor's fee, it wont cost me too much to upgrade.

Good score! Let us know how you like it, compared to the non-ASPH 
version, once you've had a chance to compare the two.

Note that you can always post our old Elmarit here, on For Sale Fridays. :-)

Cheers!
---
David Young
Logan Lake, Canada.

Wildlife Photos: www.furnfeather.net
Personal Website: www.main.furnfeather.net
A micro-finance lender though http://www.kiva.org

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