Re: maclife.de
Re: maclife.de
- Subject: Re: maclife.de
- From: Eldon <email@hidden>
- Date: Sun, 17 Aug 2008 21:01:58 -0500
On Fri, Aug 15, 2008 at 4:53 PM, Uli Zappe <email@hidden> wrote:
> I take it from your list that you did not evaluate one of the Logo apps
> (ProfileMaker/i1Match)? I ask because metrologically, the Monaco apps were
> even closer to the Logo apps than the 1 point score difference (4.5 - 3.5)
> suggests. In fact, the original calculation would have resulted in 4.0 for
> the Monaco apps. However, the perceptual rendering intent of the Monaco
> profiles (which was not used for the metrological evaluation) expanded the
> luminosity range so much that the images always looked a bit "too saturated"
> in comparison with the Logo profiles and more importantly, tended to clip
> relatively often, again in contrast to the Logo profiles - Logo seems to
> take a more conservative approach when expanding luminosity in the
> perceptual intent.
ProfileMaker is out of my price range for now and I think i1Match may
be as well. Do they offer an evaluation period that I don't know
about?
An overview of profiling packages on the Hutchcolor site makes a
similar point about Monaco scanner profiles:
"Monaco scanner profiles seem a tad more accurate than GMB in
shadow areas (not so prone to over-saturation), but they are
intent-sensitive. Converting to working RGB from a Monaco scanner
profile can blow out highlights if you use Perceptual, and can look a
little dark if you use Relative. (This of course can be adjusted in
Photoshop.)"
http://www.hutchcolor.com/Links.html#software
Out of curiosity, I made some profiles from the reflective targets and
reference files that Robert Rock posted to the list recently, then I
calculated DeltaE. Profile Mechanic had real trouble with the
Hutchcolor target even if I increased smoothing to "heavy" in the
preferences. It was the only profile that was obviously unacceptable.
Kodak target - Monaco
max. = 2.816381, avg. = 0.494242, RMS = 0.639466
(CIE94): max. = 2.721990, avg. = 0.399134, RMS = 0.515407
(CIEDE2000): max. = 3.040048, avg. = 0.402058, RMS = 0.558868
Kodak target - Argyll
max. = 9.739434, avg. = 1.224980, RMS = 1.676744
(CIE94): max. = 4.153496, avg. = 0.704086, RMS = 0.878339
(CIEDE2000): max. = 4.923076, avg. = 0.745501, RMS = 0.941209
Kodak target - inCamera
max. = 1.063317, avg. = 0.262655, RMS = 0.315079
(CIE94): max. = 0.952393, avg. = 0.187603, RMS = 0.237528
(CIEDE2000): max. = 1.021981, avg. = 0.196014, RMS = 0.254757
Kodak target - Profile Mechanic
max. = 2.758264, avg. = 0.676835, RMS = 0.830460
(CIE94): max. = 2.706456, avg. = 0.455591, RMS = 0.585397
(CIEDE2000): max. = 3.602596, avg. = 0.503668, RMS = 0.694831
Hutchcolor target - Argyll
max. = 6.253668, avg. = 1.125533, RMS = 1.409815
(CIE94): max. = 3.052208, avg. = 0.631548, RMS = 0.755953
(CIEDE2000): max. = 3.670665, avg. = 0.677570, RMS = 0.826548
Hutchcolor target - inCamera
max. = 3.743947, avg. = 0.413671, RMS = 0.569991
(CIE94): max. = 2.625954, avg. = 0.265220, RMS = 0.368037
(CIEDE2000): max. = 3.440202, avg. = 0.275898, RMS = 0.386684
Hutchcolor target - Profile Mechanic
(error message: One or more gray patches not in increasing brightness order)
max. = 61.691803, avg. = 3.403265, RMS = 6.104538
(CIE94): max. = 42.006581, avg. = 2.250013, RMS = 4.454025
(CIEDE2000): max. = 33.914458, avg. = 2.245918, RMS = 3.848524
_______________________________________________
Do not post admin requests to the list. They will be ignored.
Colorsync-users mailing list (email@hidden)
Help/Unsubscribe/Update your Subscription:
This email sent to email@hidden