[argyllcms]
- From: "alberto.ferrante@xxxxxxxxxx" <alberto.ferrante@xxxxxxxxxx>
- To: "argyllcms@xxxxxxxxxxxxx" <argyllcms@xxxxxxxxxxxxx>
- Date: Mon, 30 Jul 2012 10:59:07 +0200 (CEST)
I checked for clipping and, no, those patches are not clipping while
generating the profile (i.e., during the conversion from raw of the
target for processing): the L15 patch is at about 210, 210, and 15 for
R, G, and B channels, respectively. They may clip, along with other
patches, once the final profile and curves are applied, but this is a
different story.
I re-shoot the target with the 7D in the same
conditions of the 5DIII shoot (flash light) and the situation improved.
I now have only one patch (the usual L15) with an error of 22. If I
remove it, I get the peak error below 15 (14.something). Regardless the
lightning conditions, though, the L15 (and K15) patches are the ones
exhibiting with higher errors. Though, when generating LUT-based
profiles, errors are much lower (around 2-3 as a peak).
I tried
changing the output colorspace to Prophoto, but this only slightly
improves the situation (the peak error goes to 20 instead of 22).
Regards,
Alberto
Iliah Borg wrote:
>> If I try to do the same
with the 7D profile, the error gets higher (27
>> as peak) and even
after removing 3 patches it stays to 17. The "bad"
>> patches are
always orange/yellow.
>>
>it might depend on the output colour space
and how they get their. I mean, have
>you checked for clipping?
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