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BRIGHTNESS OF A SCOPE

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Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: June/02/2008 at 22:44
countryboy View Drop Down
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THIS IS  A DUMB   QUESTION I  KNOW,BUT I AM GOING TO ASK IT ANYWAY.WHEN YOU BUY A NEW SCOPE ,DOES THE BRIGHTNESS ,CLARITY OF THE SCOPE GO AWAY  OVER THE YEARS/IF SO WHAT CAN BE DONE  ABOUT IT/
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: June/02/2008 at 22:53
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Only if you damage the outer surface of the ocular and objective lenses or lens coatings, if the scope leaks, letting in condensation, or the scope receives abuse in some way to cause misalignment of lens elements.  Otherwise, no.

Edited by RifleDude - June/02/2008 at 22:57
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: June/02/2008 at 23:17
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Rifledude nailed it....proper care of the scope is paramount--no  shirt sleeves used to push dirt out ,, stay clear of windex on the lenses ... etc.. use a lens pen / brush to gently remove debris, then a cleaner  from the likes of nikon , Zeiss, etc made for lens coatings and a clean lens cloth ..



Edited by martin3175 - June/03/2008 at 08:09
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: June/03/2008 at 08:19
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 Yea .... NEVER USE any cleaner with ammonia !!!! Best thing I've found are Flents wipe'n'clear pads . Safe for all lenses and coatings .... including cameras .... and are anti-fog also . You can carry a few in your pocket . I use them for my binos , glasses, scopes, GPS screen and goggles .... even on my lil windshield when it's on in the winter on my ATV to keep it from fogging up and snow from sticking to it  .  
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: June/03/2008 at 11:52
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.............you mean, I can't clean my scopes with Windex and a old towel???   Bucky     How 'bout if I use the elbow of my flannel shirt??  Shocked
 
 
                      "Pretty smart, you damn gringos....pretty smart..."  Bandito
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: June/03/2008 at 14:05
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 You'd be surprised Ed what I've seen people using .... spit and napkins for god's sakes ... one time ! I gave the guy a weird look I guess .... he said " It Works " Oh well ....  
 
  


Edited by mercenary1947 - June/03/2008 at 14:09
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: June/03/2008 at 14:33
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How many times have you read about a person using or wanting to use frickin Rain-X on optics?
 
Roy
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: June/03/2008 at 16:33
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I once saw someone use a toothbrush to make sure that the objective lens is REALLY clean.

ILya
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: June/03/2008 at 16:41
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imagine what toothpaste to a lens would do .......followed by Ed's shirt sleeve and some Windex..... 
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: June/03/2008 at 18:50
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Good question, there must be a shelf life as to how long the optics coatings are good for, nothing lasts forever.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: June/03/2008 at 19:19
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 I'm not so sure that the various coatings used on the internal lens elements in many scopes won't degrade to some degree over a long period of time.
 I can imagine that even the elemental lead in the glass would eventually oxidize, at least that near or at the surface of each lens.
 Since Ted (Rifledude) seems to disagree, I am probably wrong, though!
 
 On the subject of cleaning lenses,  U.S. Optics says to use ACETONE !  That seems like an awfully harsh chemical  to be using on coated lenses, but I have to take their word for it as being harmless.  I have no doubts that it will get them clean...
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: June/03/2008 at 19:21
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Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: June/03/2008 at 19:22
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Originally posted by countryboy countryboy wrote:

THIS IS  A DUMB   QUESTION I  KNOW,BUT I AM GOING TO ASK IT ANYWAY.WHEN YOU BUY A NEW SCOPE ,DOES THE BRIGHTNESS ,CLARITY OF THE SCOPE GO AWAY  OVER THE YEARS/IF SO WHAT CAN BE DONE  ABOUT IT/
 
Well to answer the question more directly, get a set of Butler Creek scope caps and only use cleaners that are safe for use on multi-coated optics.
 
Roy
 
RifleDude is probably just saying that beyond the exterior of the ocular and objective lenses there is nothing you can do.


Edited by Roy Finn - June/03/2008 at 19:28
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: June/04/2008 at 22:53
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Originally posted by RONK RONK wrote:

 Since Ted (Rifledude) seems to disagree, I am probably wrong, though!
 
 
OUCH!Brick%20Hit
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: June/08/2008 at 21:08
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Originally posted by RifleDude RifleDude wrote:

Originally posted by RONK RONK wrote:

 Since Ted (Rifledude) seems to disagree, I am probably wrong, though!
 
 
OUCH!Brick%20Hit
 
 What?
  
(That was actually a thinly-veiled compliment!)    Wink
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: June/08/2008 at 22:04
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thats why they make new ones, to replace the old ones
image degradation starts the second the coatings are applied, (UV light etc.)
use the same rules that applies to camera lenses
acetone is water with the two hydrogens replaced by two methyl groups making it less polar and less "ionic" far less punishing than water-- ever tried to dissolve salt with acetone. ???
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: June/08/2008 at 22:49
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Acetone is a very strong solvent for carbon-based contaminants (i.e. organic materials) like plastic.  However, lens coatings are typically inorganic salts and oxides like magnesium fluoride, titanium dioxide, etc.  Glass itself is really just silicon oxide, so it is impervious to acetone as well.

ILya
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: June/08/2008 at 22:50
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Originally posted by RONK RONK wrote:

 
 What?
  
(That was actually a thinly-veiled compliment!)    Wink
 
Embarrased
Thanks Ron!
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: June/09/2008 at 07:18
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What is the chemical contained in the lens pens that are sold?
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: June/09/2008 at 08:40
Dale Clifford View Drop Down
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good question-- guessing here- ethylene glycol or some other low molecular wt. dissolved in isopropyl alcohol.

Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: June/09/2008 at 11:53
koshkin View Drop Down
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No clue.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: June/09/2008 at 12:52
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Here is a PDF file that shows a lab test done on the Lens Pen.
 
Really interesting if you don't mind reading. Roll%20Eyes  May also show the
contents in the lens pen.
 
 
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: June/09/2008 at 15:52
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Steph is that you in your avatar?
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: June/10/2008 at 05:24
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Turns out the Lenspen is made of Chamois leather impregnated with some time of carbon deposits.  The pdf file was very informative.  A very good read I might add.  I think I will stick with the Lenspen.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: June/10/2008 at 08:34
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ya good article thanks steph.
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