Hello all,
I am looking for a technique for best managing the measurement differences associated with media containing optical brighteners and relating the pass/fail criteria to the contract proof that does not contain any optical brighteners.
So far I've tested M0 & M1 but the measurements are being altered by the optical brighteners.
In my example the white point measures L95, A1, B-5. This visually looks white with a very slight red cast however these LAB values are purple which in turn makes purple ICC profiles and purple contract proofs unless I manually correct out the white point.
M2 does remove the effect producing a representative LAB value (L94.1, A0, B0.6) however M2 removes the UV filter.
I could blend the 2 & use white point correction tools but concerned about the impact up the tonal range.
All advice would be helpful.
Thanks,
Bob
I am looking for a technique for best managing the measurement differences associated with media containing optical brighteners and relating the pass/fail criteria to the contract proof that does not contain any optical brighteners.
So far I've tested M0 & M1 but the measurements are being altered by the optical brighteners.
In my example the white point measures L95, A1, B-5. This visually looks white with a very slight red cast however these LAB values are purple which in turn makes purple ICC profiles and purple contract proofs unless I manually correct out the white point.
M2 does remove the effect producing a representative LAB value (L94.1, A0, B0.6) however M2 removes the UV filter.
I could blend the 2 & use white point correction tools but concerned about the impact up the tonal range.
All advice would be helpful.
Thanks,
Bob