Re: Strange converion behavior
Re: Strange converion behavior
- Subject: Re: Strange converion behavior
- From: Andrew Rodney <email@hidden>
- Date: Fri, 04 Feb 2005 17:13:51 -0700
Title: Re: Strange converion behavior
On 2/4/05 5:05 PM, "Mike Eddington" wrote:
I expect the blues to shift some, even a lot ...
No, they really shouldn’t. You will see a reduction in the saturation but blue should not shift/look cyan or magenta! It’s been a common issue with profiles from many manufacturers in the past but it’s not something you should automatically expect and accept.
I agree. I did the same conversion with 4.7 and it nice and smooth with exceptional blues.
You got blue, right? That wasn’t always the case. One of my big beefs with previous versions was both the smoothness of the blues and the shifting. 4.7 is now up there with my “gold standard” for blues which has been the GMB packages. In fact, 4.7 seems to be smoother and I measured a few less patches to build the RGB profile.
The PerfX profile had a slight purplish tendency to the blues and some banding
That’s exactly what I see in a spectral gradient and of course the Granger Rainbow is another useful file for seeing this kind of stuff. Banding is kind of bad, shifting is really bad. It’s interesting to output the same test images with this kind of synthetic stuff using multiple profiles from different packages to the same printer.
Andrew Rodney
http://digitaldog.net/
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