[argyllcms] Re: FWA compensation.

  • From: "Amin Gharehchaie" <amin@xxxxxxxxxxxxxxxx>
  • To: <argyllcms@xxxxxxxxxxxxx>
  • Date: Mon, 10 Mar 2008 10:31:54 +0100

It seems like I was not able to post the ti3 file.

But the paper is Permajet Fibre Warmtone gloss

  ----- Original Message ----- 
  From: Amin Gharehchaie 
  To: argyllcms@xxxxxxxxxxxxx 
  Sent: Monday, March 10, 2008 10:23 AM
  Subject: [argyllcms] FWA compensation.


  Hi everyone.

  Hope someone can shed some light on this for me.

  I bought a package of permajet sample papers and there I tried a paper that 
  permajet says does not have any Optical Brighteners, but Argyll tell me that 
  the FWA content = 0.637455
  So this quiet hight FWA content compared to Epson premium semi-glossy that 
  gives me a value of FWA content = 0.288059

  And when I take this measurement to gretagmacbeth profilemaker it tells me 
  that the paper does not have any FWA content but the Premium Semi-glossy 
  paper it finds optical brighteners in.

  Could anyone please explain to me how this is?

  I am printing on a Epson Stylus Photo 2100 with Lyson PhotoChrome Pro ink.

  From what I can understand is that the optical brighteners are actually in 
  the ink and not the paper, and Gretag checks only against the paper but 
  Argyll checks against paper and ink.
  Is this a correct assumtion?

  And another very strange thing is that Lyson ink on some other papers have 
  very low amount of FWA, on paper like Ilford Gallery Gold Fibre Satin it has 
  a value of FWA content = 0.068191

  I will try to send a spectrafile of the permajet paper so if anyone can look 
at it and make anything out of it.

  Best regards
  Amin

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