Quote:
Originally Posted by lchandra
I just called EFI RIP rep, and they informed me that G7 proofer certification only concern dE and not dH of the primaries.
My question is, the default ISO12647-7 setting on the EFI indicate max dH of 2.5 for all primary. If this is not required, does it mean that my proof will still pass G7 certification, if I change the dH limit?
thank you for your advice
- Levy
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Delta H is notoriously underspecified as a metric for the primaries. The Swop/Gracol Hard copy proofing system certification doesn't speficy dH (or at least it didn't), however, tolerances for ISO 12647-7.2, which would be relevant for the ISO 12647-7 control strip, do specify dH of 2.5 for primaries.
So while dH for primaries isn't required currently for SWOP/Gracol hard copy system certification, it probably should be...and I'd venture to guess that it will be one day. There's a reason for the delta H specification for primaries as a delta E76 of 5 is a barn door without it.
Note that there is currently debate within relevant committees whether delta H is relevant for neutral patches, though this is specified in ISO 12647-7.2.
