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What color are the coatings on S&B PMII lenses?

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Category: Scopes
Forum Name: Rifle Scopes
Forum Description: Centerfire long gun scopes
URL: http://www.opticstalk.com/forum_posts.asp?TID=33418
Printed Date: March/28/2024 at 12:54
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Topic: What color are the coatings on S&B PMII lenses?
Posted By: Gappa
Subject: What color are the coatings on S&B PMII lenses?
Date Posted: July/07/2012 at 08:54
does anyone here have one they can look at and tell me?  We have an older S&B we bought in Germany a few years and the coatings are a deep blood red just wondering how the PMII scopes are done.



Replies:
Posted By: koshkin
Date Posted: July/07/2012 at 23:37
When you look at the coatings straight on, there is not supposed to be any color.  That is more or less the whole idea about anti-reflective coatings.

If you look at them at an angle you can see some color, but that is largely irrelevant to the coatings' performance.

ILya


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Posted By: Roy Finn
Date Posted: July/07/2012 at 23:49
What ILya said. My understanding is that whatever "color" you are seeing is the color of the light being reflected off the lense. I'm not referring to cheap coated lenses that are actually tinted with some kind of color commonly seen with cheap bino's for example.


Posted By: Gappa
Date Posted: July/08/2012 at 08:27
well zeiss coatings seem to look more blue/purple, and the premier seems to look very green, my swarovski looks redish blue, the $5000 Takahashi Orthoscopic Apochromat (TOA130) I own has some wild looking coatings. The Takahashi FSQ I used to own had green coatings looking very similar to the Premier.
That's why I was asking about the S&B PMII, I wanted to see if they are using the same coatings as Premier.


Posted By: cheaptrick
Date Posted: July/08/2012 at 09:15
Originally posted by Gappa Gappa wrote:

The Takahashi FSQ I used to own had green coatings looking very similar to the Premier.

Can you post a pic of this scope? I'd like to see what yours looks like. I've never seen, nor heard of this scope before.  


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If at first you don't secede...try..try again.


Posted By: cheaptrick
Date Posted: July/08/2012 at 09:17
Disregard, Gappa. I just googled and saw that it's NOT a rifle scope. Bucky

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If at first you don't secede...try..try again.


Posted By: Kickboxer
Date Posted: July/08/2012 at 09:18
If you are really interested, you can read the article from American Rifleman:

http://www.americanrifleman.org/articles/riflescope-optical-coatings/ - http://www.americanrifleman.org/articles/riflescope-optical-coatings/


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Opinion,untempered by fact,is ignorance.

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Posted By: Gappa
Date Posted: July/08/2012 at 11:27


Posted By: Gappa
Date Posted: July/08/2012 at 11:28
Now thats an AMAZING piece of glass. Its a "Flatfield Super Quadruplet" or FSQ106.  Its an astrograph made in japan. Takahashi makes the most awesome telescopes!


Posted By: Gappa
Date Posted: July/08/2012 at 11:31
That scope runs new 5k+



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