[LRflex] Re: formula for lens cleaning fluid
- From: David Simms <simmszee@xxxxxxxx>
- To: leicareflex@xxxxxxxxxxxxx
- Date: Sun, 17 Jan 2010 15:06:43 -0800 (PST)
OK. The challenge is on. Thanks for this.
Dave
________________________________
From: Steve Barbour <steve.barbour@xxxxxxxxx>
To: leicareflex@xxxxxxxxxxxxx
Sent: Sun, January 17, 2010 2:07:12 PM
Subject: [LRflex] Re: formula for lens cleaning fluid
On Jan 17, 2010, at 1:54 PM, David Simms wrote:
> Thanks for the tip.
> Now, why the reluctance to use filters ? Do you actually they'll reduce the
> performance of your R lenses ?
> I know that filters represent another pair of optical surfaces but, when your
> lenses are big-time expensive, would you not think that the trade off is
> worth protecting that front element from dust, accidental abrasion, possible
> damage from pollutants in the air and so on ? Also, a skylite or UV does
> filter out wavelengths that lie outside the visible range and which can alter
> the response of some films.
> Anyone aware of studies or tests done on the subject ?
have you taken any photos with/without...? let's take a look...
Steve
> Dave
>
>
> ________________________________
> From: Bob Shaw <rsphotoimages@xxxxxxxxxxx>
> To: leicareflex@xxxxxxxxxxxxx
> Sent: Sun, January 17, 2010 11:46:28 AM
> Subject: [LRflex] Re: formula for lens cleaning fluid
>
> Avout 5 months ago I decided to try a gel product called "Blu Goo" on my
> coated eyeglasses.
> www.blugoo.com/
>
> Superb results and absolutely no scratches to the anti-glare coating . They
> provide their own washable (blue, of course) microfiber cloth.
>
> I use my fingertips (after bath or shower so skin is soft) to apply, just a
> tiny amount out of the tiny jar. Sort of like applying automobile wax with
> your index finger tip.
>
> Then remove the dried film using the cloth. We're talking about 60 seconds
> for the whole process, here. There appears to be no polymerization on the
> lens surface after cleaning. The product is water-based and contains none of
> the usual no-no ingredients.
>
> If you need to know more, go here: www.blugoo.com/
>
> I've considered using on filters but am not going to use on my R lenses until
> I hear from someone else who has. Cluck-cluck-cluck...big chicken, here.
>
> As to microfiber; I never use it on those rare occasions when I must clean
> lenses.
>
> I do the "breath vapor" thing, then gently rub with a very old tight-weave
> (therefore pretty much lint-free) cotton dish towel that has been washed
> repeatedly (maybe 50+ times over the past several years). I always have one
> clean old dish towel available for that purpose only.
>
> Thing about microfiber is that it is not very absorbent (try drying wine
> glasses with a microfiber towel if you don't believe me). Also it seems that
> there are different grades which actually can scratch. Sort of a polymeric
> crap shoot.
>
> Probably better for outer garments than for cleaning fine (read as,
> Leica/Contax/etc.) optics.
>
> I now deactivate my Obsessive-Compulsive Module and yield to the Forum on
> this topic.
>
>
> Bob
>
>
>
> Bob Shaw
> rsphotoimages@xxxxxxxxxxx
>
>
> On Jan 16, 2010, at 10:21 AM, David Simms wrote:
>
>> I couldn't agree more; less is more. Even least may be too much. I'm not as
>> hung up on cleaning filters though. I'll probably email Gerry Smith, the
>> Canadian dean of Leica repair, to get his input, just to be sure.
>> cheers
>> Dave
>>
>>
>>
>>
>> ________________________________
>> From: Sonny Carter <sonc.hegr@xxxxxxxxx>
>> To: leicareflex@xxxxxxxxxxxxx
>> Sent: Sat, January 16, 2010 10:01:10 AM
>> Subject: [LRflex] Re: formula for lens cleaning fluid
>>
>> On Sat, Jan 16, 2010 at 11:51 AM, David Simms <simmszee@xxxxxxxx> wrote:
>>> Hmmmm. Is it capable of cleaning the lettering, for instance on a Leica
>>> lens ?
>>> I think I'd find myself being somewhat squeamish about using it on optical
>>> surfaces although the (possible) Leica-sanctioned mixture that I mentioned
>>> would probably not be much less nasty.
>>> Thanks
>>> Dave
>>>
>>
>> I dunno, many of the older lens components were cemented with organic
>> materials.
>>
>> As far as buying, fixing up and selling, how do you know the long term
>> effects of lighter fluid on the lenses? You don't have them any more.
>>
>> I think I'd just be careful. Less is more with lenses.
>>
>> --
>> Regards,
>>
>> Sonny
>> http://www.sonc.com
>> http://sonc.stumbleupon.com/
>> Natchitoches, Louisiana
>> (+31.754164,-093.099080)
>>
>> USA
>>
>>
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