Well yes I meant silicone. I know you can supposedly use an SMC lens as
an ashtray, but some chemicals may be displaced by others, there are
after all, (and damn I wish I remembered more chemistry), plastics which
will happily reside in one solvent and be completely dissolved by
others. Rain-x will combine with the smallest amount of oil on your
windshield to produce an un-godly mess. Rain-x will combine with anti
fogging coatings as well, to the detriment of visibility.
mike wilson wrote:
From: "P. J. Alling" <[EMAIL PROTECTED]>
Date: 2005/09/14 Wed PM 02:30:41 GMT
To: [email protected]
Subject: Re: Water repelling lens coat?
I don't think you'd want to put either Rain-X or a silicon compound on a
photographic lens, there might be a reaction with the coating.
Not with SMC, that you can famously stub cigarettes out on. Assuming you
actually mean silicone products. Silicon/silica products would undoubtedly
wipe out the glass, never mind the coating.
I was listening to a radio programme yesterday where a gent was expounding the
virtues of his selfcleaning and water dispersing glsss. I was driving so not
paying complete attention but I did (after checking the date) note that he
thought the price increase of 15% was too much. Maybe for industrial use but I
would pay that for household glass.
Something like that would be good for waterproof cameras. It stopped water
beading by some combination of physics, chemistry and satanism. I always carry
a Pentax cloth with me for wiping the zoom90wr lens cover when I'm using it.
Not perfect but it works for me. Any detergent would help the process if
applied in small amounts.
mike
Frits Wüthrich wrote:
A friend of my in the UK asked me this question:
"Was wondering if you could help me. I've recently bought a Pentax Optio WP.
Great little camera, even more intuitive than my old Casio and excellent being able
to use the camera canoeing, swimming etc. (Not actually taken pics from underwater
yet.)
One issue though. Once it has been in the water, or if it is raining, the droplets
on the lens spoil a lot of the pics. Do you know of anything which would coat the
lens, which would repel the water, or break the surface tension without distorting
the pics?"
I have no idea, is there anyone who can advise?
RAIN-X? Or the opposite, anti-condensation stuff?
--
When you're worried or in doubt,
Run in circles, (scream and shout).
-----------------------------------------
Email sent from www.ntlworld.com
Virus-checked using McAfee(R) Software
Visit www.ntlworld.com/security for more information
--
When you're worried or in doubt,
Run in circles, (scream and shout).
