Re: Humans (and cameras and scanners) do not have a color gamut (?)
Re: Humans (and cameras and scanners) do not have a color gamut (?)
- Subject: Re: Humans (and cameras and scanners) do not have a color gamut (?)
- From: Wire ~ via colorsync-users <email@hidden>
- Date: Tue, 14 Jan 2020 13:47:43 -0800
Searching for layman's info on details of Wright and Guild experiments, I
was surprised to find this source. It's webbook that takes on the matters
at hand here as related to earth science / oceanography.
Ocean Optics Webbook - Photometry and Visibility
http://www.oceanopticsbook.info/view/photometry_and_visibility/chromaticity
According to the Kelly 1943 projection of the CIE spectrum locus, there are
23 unique colors!
On Tue, Jan 14, 2020 at 1:25 PM Wire ~ <email@hidden> wrote:
> Will the real ICC sRGB please stand up!
> https://ninedegreesbelow.com/photography/srgb-profile-comparison.html
>
> I enjoy this color enthusiast's blog, esp its GNU/Linux perspective.
>
> The author has a lot to say to the advanced amateur, like me, not unlike
> Rodney does, and I offer it not because I think it's a reference quality
> work, but because it shows how someone who is obviously very interested in
> computer color thinks about the subject and the effects of tools on that
> thinking. I happen to disagree with some of the opinions offered —I also
> disagree with a number of Rodney's opinions about sRGB according to his
> video tutorials—and I have found one major aspect, elsewhere on the blog,
> that I feel is totally wrong. But it doesn't invalidate the author.
>
> The reason I offer the page in context of this thread is that it asks such
> an obvious yet overlooked question WRT to basic ICC color: Why would you
> think your standard profile is even correct to the standard? Do you go into
> your working space profiles and look at the numbers to ensure they're
> correct, or do you just trust a third party? The blog author thought to ask
> this and came up with interesting results.
>
> In Libre SW movement, the question is very significant because of the
> democratic nature of the SW. Who's keeping tabs on this stuff? What does it
> mean when structure of your whole OS is manifest like opinions on a forum?
>
> Speaking to the matter of ICC gamut. Don't think for a second that because
> you've got a ICC profile, even for an apparently standard working space,
> that you've got a lock on the facts.
>
> /wire
>
> P.S/ Please do not consider this post an invitation to pick the referenced
> blog apart. I came across it by chance and find it interesting and
> relevant. I have never met the author and have no axe to grind with them.
> They certainly don't deserve to be harassed if you find their opinions or
> even facts wanting. Just consider the point about the reality of sRGB in
> context.
>
> On Tue, Jan 14, 2020 at 12:48 PM John Gnaegy via colorsync-users <
> email@hidden> wrote:
>
>> > where should people post their color bug reports generally?
>>
>> There's an app called Feedback Assistant which is installed in beta
>> releases of MacOS (also iOS, iPadOS and TVOS). In order to get beta
>> releases you need to be in the developer program or the beta software
>> program.
>>
>> https://developer.apple.com/ (note the section at the bottom about bug
>> reporting, and the mention of the beta software program)
>>
>> https://beta.apple.com/sp/betaprogram/
>>
>> I think all you need to do for the beta program is sign up and agree to
>> some terms.
>>
>>
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