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Cleaning Lens while Protecting Coating-Best Cleaning Kits, Suggestions?

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#1 Renaisssanceman

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Posted 22 February 2020 - 01:13 PM

I am about to embark on a journey of sky observations/nature walks with grandsons and binoculars. It's a given that they are going to get dirty/smudged and will need cleaning. The binocular lens and coating both will be cleaned and therein lies the danger of scratching an objective lens and/or a coating or removing the coating.

 

So are there recommendations on cleaning kits, though hopefully not as dear as the Swarkowski (sp?) kit and necessary tools and tutorials on YouTube you would recommend?

 

I know this has likely been dead horse beaten in past posts, but as a new comer I lack the experience of trial and error which you have.  So I hope to tap that knowledge without having to gain wisdom, the hard way, e.g. the "OMG" moment. frown.gif

 

My thanks.



#2 N3p

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Posted 22 February 2020 - 01:25 PM

I like to use small sheets of microfiber, that's my favourite textile to clean my eyepiece lens.

 

But a specific kind like this one bellow:

https://www.amazon.c...2395513&sr=8-48

 

They gave me one 4"x4" inside a camera cleaning kit and it's my favourite fabric to gently clean, it will easily grab particles on the lens without leaving any particles on the lens.

 

I also I think they are much better at absorbing water then the usual optical microfiber such as this one.

https://www.amazon.c...82395616&sr=8-8

 

Most of the time, a microfiber and some distilled water will do the trick for maintenance. On very dirty optics with grease that's another story.

 

And a blower, very important too.

https://www.amazon.c...82395900&sr=8-7


Edited by N3p, 22 February 2020 - 01:27 PM.


#3 wrnchhead

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Posted 22 February 2020 - 01:27 PM

All in all, don’t be too afraid of it. The coatings are pretty hard and as long as you aren’t grinding an obvious piece of dirt across the lens you should be fairly safe using normal methods.

#4 sg6

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Posted 22 February 2020 - 01:38 PM

All in all, don’t be too afraid of it. The coatings are pretty hard and as long as you aren’t grinding an obvious piece of dirt across the lens you should be fairly safe using normal methods.

As that says. The coatings are fairly robust, almost as robust as glass - which for all said is tough.

Best that the surface is damp/moist at first.

 

I have a set of glasses with single layer AR on them, easily 8-10 years old, have cleaned those say 5-10 times a day for years. Used anything that came to hand - tissue both kitchen and loo roll, assorted shirts. The AR coating has not a mark on it, all still fully there.


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#5 j.gardavsky

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Posted 22 February 2020 - 05:30 PM

Pretty good is the ZEISS cleaning kit https://www.bhphotov...aning_kit.html 

The best microfiber cloth is that from Leica https://www.bhphotov...ning_Cloth.html

 

JG



#6 Renaisssanceman

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Posted 22 February 2020 - 07:22 PM

Thanks all for suggestions and that the coatings are not too fragile. From discussions it seems that the coatings have come a long way from early coated lenses to the present. Would early coatings be less robust than the modern coatings?

 

I will look at all products suggested.



#7 Yarddog

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Posted 22 February 2020 - 07:37 PM

My first binocular was a used Nippon Kogaku 7X35. It was not marked Nikon nor was it "Made In Occupied Japan" or at least not marked that way. I got it at a pawn shop near Eglin AFB in 1959, It was and still is a great binocular but I soon learned that cleaning it was causing many tiny scratches.

 

I was very careful after that and using a very soft cloth seemed to prevent any more. I could never tell that all those scratches harmed the view.

 

I actually wonder when it was made. When did they start using durable coatings?




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