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Graycol G7 Certification
- Thread starter Rooster
- Start date
Rooster
New Member
Just wondering what's involved.
Do you have to use the curve 2 tool from chromix for certification or is there other lower cost or even open source alternatives?
I know next to nothing about it and haven't really researched it much, but for a digital printer is it basically just grayscale balancing of the linearization curves prior to profile creation. Or is it more involved than that?
Do you have to use the curve 2 tool from chromix for certification or is there other lower cost or even open source alternatives?
I know next to nothing about it and haven't really researched it much, but for a digital printer is it basically just grayscale balancing of the linearization curves prior to profile creation. Or is it more involved than that?
eye4clr
New Member
From what he described to me, Chromix is the only game.
For the type of cert he got (proofing only), you profile your proofer, send the Chromix test print to them. They determine if you're close enough. If so, they send back either instructions on how to adjust your densities in the linearization or they provide a literal curve adjustment for you to use in your RIP. Then you pay them lots of $ and you're certified for 1 year.
Yes, it is linearization (calibration) adjustment post icc. Seems a bit odd, but if it is small adjustments i could see it working.
Marc used a crappy desktop inkjet and the cheapo RIP that came with it. In his case David provided instructions for the adjustment. I assume he'd provide a curve adjustment to be used in the quickset for Onyx. I guess they question you about your RIP to direct them how to work with you.
Sounds like if your proofer is way out of whack, they just deny you. But i'll wager you'll do fine. it sounds a lot easier than i thought it would be. Great scheme for Chromix to make $ providing a certification that times out pretty quickly (imo).
For the type of cert he got (proofing only), you profile your proofer, send the Chromix test print to them. They determine if you're close enough. If so, they send back either instructions on how to adjust your densities in the linearization or they provide a literal curve adjustment for you to use in your RIP. Then you pay them lots of $ and you're certified for 1 year.
Yes, it is linearization (calibration) adjustment post icc. Seems a bit odd, but if it is small adjustments i could see it working.
Marc used a crappy desktop inkjet and the cheapo RIP that came with it. In his case David provided instructions for the adjustment. I assume he'd provide a curve adjustment to be used in the quickset for Onyx. I guess they question you about your RIP to direct them how to work with you.
Sounds like if your proofer is way out of whack, they just deny you. But i'll wager you'll do fine. it sounds a lot easier than i thought it would be. Great scheme for Chromix to make $ providing a certification that times out pretty quickly (imo).
eye4clr
New Member
Yes and no. 
You end up adjusting the lin curve that you built as the normal process of media setup. But you're adjusting it after the whole process is completed based on Chromix's direction.
I'm sure they're small adjustments assuming you've got good grey balance to start with.
You end up adjusting the lin curve that you built as the normal process of media setup. But you're adjusting it after the whole process is completed based on Chromix's direction.
I'm sure they're small adjustments assuming you've got good grey balance to start with.