Re: Epson 4900 Calibration
Re: Epson 4900 Calibration
- Subject: Re: Epson 4900 Calibration
- From: Todd Shirley <email@hidden>
- Date: Tue, 05 Apr 2011 17:38:55 -0400
On Apr 4, 2011, at 5:39 PM, Terence Wyse wrote:
> On Apr 4, 2011, at 2:58 PM, José Ángel Bueno García wrote:
>
>> And don´t you, Terence and Roger, see or make any difference between
>> proof and inkjet print for exhibition?
>
> Yes...two different applications, possibly different requirements...but like Mike Strickler said, I too believe proofing is the more critical in terms of color-matching since we're generally matching to a verifiable international or regional "standard" or specification.....and we're doing it to within *tenths* of a delta e tolerance. Fine art printing rarely if ever is held to a standard other than possibly an internal standard.
>
Hi Terry
I agree that proofing is trying to match a known standard or specification, but I don't think that necessarily makes it more "critical". As we are all well aware the ISO 12647-7 tolerances for a certified proof are pretty wide, and two "certified" FOGRA39L proofs can look pretty different. When you say you are matching to within tenths of a dE, of course that only refers to the given RIP/spectrophotometer combo that created that proofing set-up. That level of precision is meaningless for another vendor who might read the patches on your proof and see an average dE around 2 and and a max dE of 4. This still certifies (quite well in fact), but it may vary significantly from another certified proof and/or a well calibrated press run.
I know most people on this list are well aware of the above, I'm just saying it to add to the thread in this forum. There is a very real disconnect between "perfectly" certified proofs and actual visual matching. I'd say fine art printing is in fact *more* critical because it usually has to ACTUALLY visually match an existent piece of art, whether that is a painting in a museum or an earlier inkjet print. Sure, when making the "original" or first print, it is all about the artist's perception and getting the best possible expression of the artists vision, so there is no dE standard for that. But every print after that really does have to match within tenths of a delta e tolerance.
-Todd Shirley _______________________________________________
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