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Leupold's New VX-lll

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Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: July/28/2004 at 09:20
Roy Finn View Drop Down
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Steiner Junkie

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After reading all the new advertisements about the new and improved Leupold VX-lll's I was wondering if anyone could explain the benefits of the " new Index Matched Lens System". In their 2003 catalog they stated that they were utilizing an indexed matched lens system with the Multicoat 4 lens coatings. I don't see any indication of the use of the MC4 lens coatings in the new Vari-X lll's, so I would have to assume that they have developed a new lens coating that allows them to advertise " up to 98% total light light transmission". Can anyone shed any light, no pun intended, on this monumental achievement. Has anyone compared last years models with the new and improved Leupold's?  Is Leupold now the brightest scope in the world? Thanks in advance to all.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: July/28/2004 at 16:43
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I can't address the technology involved but I have had a  2.5X8X36 Vari X III and VX III side by side.  The new scope is much improved in brightness and clarity.  I also had a Kahles 2X7X36 on hand, and I preferred the VX III.  More detail was visible, and the edges were much sharper than the Kahles.  This was all done in good light.  Low light might be very different, but I doubt it. 
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: August/11/2004 at 20:19
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This is an encouraging report. I just ordered the same 2.5-8x36 with a custom reticle for my new brush gun.
I couldn't find enough comparable scopes to compare them in low light and bought the VXIII or the basis of ads
and user coments.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: August/18/2004 at 05:11
VanMojo View Drop Down
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Ok.... I do work at Leupold, but not on the VX-III line, so this is partly speculation, combining what I know from the stuff I do work on with what is out there for everyone to read about the Index Matched stuff.

You may not realize this, but any scope you buy will have at least 2 (almost certainly more) different lens materials in it.  The reason for this is because any one lens will bend different colors of light slightly differently from each other, and different lens materials bend colors in different ways.  The lens materials are chosen in such a way to assure that when the light reaches your eye after traveling through the scope, all the colors are all aligned perfectly.

Usually, any given scope will have one standard coating on all its lenses.  VX2's, for example, have the same Multicoat covering on every lens in the scope.  But what they've done with the Index Matched stuff is to select the best coating for each individual lens material, rather than using the same coating for all the lenses regardless of material.

I believe that "Index" refers to the light diffraction index of a given type of lens material, so "Index Matched" indicates that they have matched the coating with the index of the lens.

Basically what it boils down to is that it's a better way to use lens coatings, which reduces total excess light and glare, letting you see everything with better contrast.

Again, please remember that this is not an official statement from Leupold.

VanMojo

Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: August/18/2004 at 08:10
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Thanks VanMojo,
This sounds plausible and encouraging. I had my VX3 shipped directly to the gunsmith who's adjusting the
trigger, cryro-treating, shortening the stock etc. and mounting the scope. I haven't even seen it yet.
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