[LRflex] Re: formula for lens cleaning fluid

Just joking, of course. I honestly thought it would never make a difference. I 
am into extracting the best performance that I can from my equipment and if it 
makes a noticeable difference to shot without a protective filter then that's 
what I'm damn well gonna do. Right ?
Dave



________________________________
From: Steve Barbour <steve.barbour@xxxxxxxxx>
To: leicareflex@xxxxxxxxxxxxx
Sent: Sun, January 17, 2010 3:17:38 PM
Subject: [LRflex] Re: formula for lens cleaning fluid


On Jan 17, 2010, at 3:06 PM, David Simms wrote:

> OK. The challenge is on. Thanks for this.


not a challenge David, but you are most certainly welcome...

the way I see it, a camera is made to take pictures, not to be the subject of a 
PhD thesis...


:-)


Steve


> 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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