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Old Friday 4th August 2017, 23:26   #1
NDhunter
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Leica Trinovid BA question ?

I have posted a photo of a Trinovid 10x50 BA, that the seller
says is brand new.

He says that Leica puts a powder on them, when shipped from new and it
is easily removed.

What do you think ?

Jerry
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Old Friday 4th August 2017, 23:30   #2
Alexis Powell
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Quote:
Originally Posted by NDhunter View Post
I have posted a photo of a Trinovid 10x50 BA, that the seller
says is brand new.

He says that Leica puts a powder on them, when shipped from new and it
is easily removed.

What do you think ?

Jerry
I've seen this before. I think it is a reaction of the plastic armor, or of something applied to it. I've found a wipe down with ArmorAll removes it and prevents return. The plastic armor is not compromised.

--AP
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Old Friday 4th August 2017, 23:40   #3
Binastro
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Pete Gamby mentioned what it is.
I can't remember the chemical term.

I often see it on items, which can be newish or old.


Zinc Stearate.

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Old Saturday 5th August 2017, 00:08   #4
elkcub
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Quote:
Originally Posted by NDhunter View Post
I have posted a photo of a Trinovid 10x50 BA, that the seller
says is brand new.

He says that Leica puts a powder on them, when shipped from new and it
is easily removed.

What do you think ?

Jerry
I don't believe it. Why didn't he remove it?

Ed
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Old Saturday 5th August 2017, 00:13   #5
etudiant
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I think it some sort of talc that is part of the armoring. There have been other comments about this on BF and the consensus is that it is harmless and readily removed, as Alexis Powell has noted.
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Old Saturday 5th August 2017, 00:21   #6
NDhunter
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I don't believe it. Why didn't he remove it?

Ed
Ed:

If you watch the famous auction site, then you may find this genius.
He only deals in binoculars, and did not have a clue.

Answer:

It is rubber oxidation, a common thing, and found in many optics,
all brands. It does easily wipe off. I just wanted to post this one
for amusement.

Jerry
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Old Saturday 5th August 2017, 01:32   #7
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Jerry,

I guess that's a genuine Leica shoestring, too?

Ed
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Old Saturday 5th August 2017, 01:48   #8
NDhunter
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Ed:

You are correct, new in box. This guy is a dreamer, if you follow his auctions.

Jerry
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Old Saturday 5th August 2017, 15:06   #9
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I wonder what kind of shape the zippered leather case is in? One came with my 7x42 Trinovid BN and I keep it on the binocular all the time. Even when I use it. I give the case a little leather treatment now and then.

Bob
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Old Thursday 10th August 2017, 13:25   #10
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I used to work in the rubber industry and the company I worked for and many others included a percentage of a certain wax in the rubber compounds. During storage this wax migrated to the outside of the rubber and gave it white-ish appearance but also gave the rubber a surface protection.

The Leica BA looks very much like this. I have some old Zeiss Dialyt-era rainguards that develop this white-ish bloom and it wipes off but will tend to reappear unless the guard is used and gets handled. The point is, if this is the same phenomenon it is not harmful, merely cosmetically unpleasing.

Lee
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Old Friday 11th August 2017, 05:36   #11
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BA/BN armor is not rubber, according to the old Leica ads, but polyurethane. Having owned a few, I'd say that compared to the alleged rubber on other binoculars I've owned, it is harder and tougher. It also utterly lacks the unpleasant odor of my supposedly rubber clad Ultravid BR.

I don't know what that white stuff is, but I seriously doubt it will damage the armor. However, reconciling the supposed polyurethane-ness of old Trinnie armor, bowling pins, and floor/furniture finish is beyond my ability. I guess it must can be morphed, plastic like, into different manifestations.

Despite my nerdy technical interjection, I appreciate ND's amused point of view about this cruddy looking binocular and its seller. White stuff has always been a great mystery. I cannot resist here telling a joke from grade school, which has always stuck with me, because it is, I'm sure you'll agree, both deep and widely applicable. It even has an ornithological overtone.

Q: What's that white stuff in bird poop?
A: Bird poop.

Ron
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