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Do Silver-Coated Roof Prisms make a difference?

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Do Silver-Coated Roof Prisms make a difference?

Postby tantien3 on Sun Sep 05, 2010 1:38 pm

:?: I am looking at two Vortex 8x42 binoculars: the Diamondback and the more expensive Vortex Fury. In many key aspects the Diamondbacks are better but they do not have silver coated roof prisms according to the manufacturer but it states so in the OpticsPlanet description for them. So I don't know what is correct (I'm assuming it's the manufacture's site). But I'm wondering how much difference this coating makes and under what conditions does it help?

Should I even be hung up on this point for the $120 difference? Thanks for the help!
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Re: Do Silver-Coated Roof Prisms make a difference?

Postby Guest on Sun Sep 05, 2010 6:38 pm

Not sure if they have them or not. Aluminum coating was used on many roof prism binoculars for some time. At one point it was considered a step-up to have silver coated prisms. That changed 5 or 6 years ago. Silver coating is found on most of the $150-$500 roof prism models now with several models in this price range now boasting dielectric coating (a step up from silver)....Nikon Monarch, Zen Ray ZRS, etc... to name a few.

How much of a difference it makes in the field is questionable. To the trained eye you can pick up the difference in brightness and overall color representation. To most folks you won't really pick up on the difference.

Just my two cents.
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Re: Do Silver-Coated Roof Prisms make a difference?

Postby Jne_K on Mon Sep 06, 2010 10:03 am

Hi

Silver coating gives you a couple more percentage points of image brightness, since silver is has better light transmission than aluminum oxide. It is certainly not enough of a reason, by itself, to go with the more expensive bino, but it is typically packaged with better optics
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Re: Do Silver-Coated Roof Prisms make a difference?

Postby tantien3 on Thu Sep 09, 2010 9:08 pm

Thanks Joanie!

So can you tell me for sure if the Diamondback's have this silver coating? Because the Vortex site does not list this feature for the Diamondback model, but they do so for the 8x42 Fury.
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Re: Do Silver-Coated Roof Prisms make a difference?

Postby Jne_K on Fri Sep 10, 2010 11:38 am

Hi

Silver coated prisms are a good selling point, especially in low end binoculars. I can't speak for the current version of the Diamondback, but the older versions did not and it is very unlikely that any manufacturer would neglect to mention this feature at this price point.
Thanks for posting with us
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Forum: http://www.opticsplanet.com/msgboard
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