On Dec 12, 2014, at 9:44 AM, Martin Orpen <martin@idea-digital.com> wrote:
On 12 Dec 2014, at 17:03, Terence Wyse <wyseconsul@mac.com> wrote:
I’m not understanding at all how exceeding the TAC is an “out-of-gamut” issue. It’s not OoG, it’s more of a print quality issue.
It is a gamut issue in CMYK profiles — how can you fail to understand that?
I think that Terry is suggesting that potentially all CMYK combinations could be considered in gamut (generically) but that TAC sets a separate limit of advisable combinations. By generically I mean that there are certainly CMYK printing systems that will happily accept inking levels up to 400% without any issues so Photoshop needs to take those into consideration as well. While you may consider a TAC level part of the gamut boundary, I don’t think that I would. Or at least, I would not consider it part of the device gamut boundary. It could be argued that it should be considered part of the profile’s rendered gamut boundary.
And even if you can’t, where would you put a TAC warning in Photoshop if not in the View menu?
That’s a logical place for it, I think. regards, Steve