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Uilleann

Poly vs. Trivex

Rating: 2 votes, 4.50 average.
23 Comments
by
Uilleann
, 12-30-2009 at 10:08 AM (6569 Views)
It really does yellow folks. Proof's in the puddin:



Edited to add the following from the original post: My lenses are 2.5 years old in this frame, the Hoya lenses are 1.5 years old. Mine use Crizal Avancé, and the Trivex use Super Hi Vision. neither pair are photochromic. The Trivex plainly shows yellow, whereas the poly lenses are clear. Not sure how so many qualified opticians out there could miss the difference here... :shiner:;):p (As an aside, the above image is taken directly from the .raw camera image file [Canon EOS 30D, 1/40s, F/5.6, ISO:500], is not altered except for being reduced in size for the web and converted to a .bmp file to preserve true color as much as possible.)

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Updated 12-31-2009 at 11:55 AM by Uilleann (Adding lens/photo information from original post.)

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  1. HeatherinMich's Avatar
    I'm fairly new to the field, so please bear with me but I was under the impression that Tri-vex lenses were a brand of poly and not a different material. What is the ABBI value and ref index of Tri-vex comp to poly? Secondly any pro and con info anyone can give me about Tri-vex (aside from poss yellowing) would be helpful too.
  2. Ivan Hoe's Avatar
    The poly with crizal coating is still clear but try putting it under a UV tester then let us know the result.
    The Trivex with HVVP coating is yellow but try putting it under a UV tester then let us know the result.

    My guess is, the poly with crizal no longer has UV protection, but the trivex still has UV protection.

    Just try it.
  3. kevinwan's Avatar
    [QUOTE=Ivan Hoe;bt271]The poly with crizal coating is still clear but try putting it under a UV tester then let us know the result.
    The Trivex with HVVP coating is yellow but try putting it under a UV tester then let us know the result.

    My guess is, the poly with crizal no longer has UV protection, but the trivex still has UV protection.

    Just try it.[/QUOTE]
    could be right, the UV protect is yellow colored.
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