Dale
2014-02-25 03:28:50 UTC
http://en.wikipedia.org/wiki/Color_temperature
my sister has an iPhone, she takes pictures and they look like they have
a pleasant color temperature overall on the iPhone
when she emails these to me and I view them on my emachines monitor,
running Redhat Enterprise Linux KDE Thunderbird email, the pictures kind
of look very incandescent
they were originally captured under incandescent lighting
I don't know if the iPhone uses a scene balance algorithm, or just a
white point balance, that doesn't get exported
would seem like a typical proprietary grab, like sRGB and ProPhotoRGB
http://en.wikipedia.org/wiki/Srgb
http://en.wikipedia.org/wiki/ProPhoto_RGB
I can fix this in GIMP easy enough,
http://en.wikipedia.org/wiki/GIMP
but it really goes beyond the "good enough" color category for even
consumers I think
any one know what is actually happening here?
I can fix it easy. Get rid of sRGB and ProPhotoRGB and use an RGB
related more to the eye (CIE) than an output device or film
http://en.wikipedia.org/wiki/CIE_1931_color_space
its been 20 years since I first said at Kodak R&D that sRGB would mean
an easy out from the development of real device independent color
management workflows
http://en.wikipedia.org/wiki/International_Color_Consortium
yes, I learned since you need a wider gamut than an ideal print to
accommodate all applications, but there DOES need to be a RELATIVE
appearance, unless you are talking about "good enough" color, or "more
attractive" color, which can be handled in many ways, I think "accurate"
which is defined as CIE is a better starting point than video or film
http://en.wikipedia.org/wiki/CIE_1931_color_space
my sister has an iPhone, she takes pictures and they look like they have
a pleasant color temperature overall on the iPhone
when she emails these to me and I view them on my emachines monitor,
running Redhat Enterprise Linux KDE Thunderbird email, the pictures kind
of look very incandescent
they were originally captured under incandescent lighting
I don't know if the iPhone uses a scene balance algorithm, or just a
white point balance, that doesn't get exported
would seem like a typical proprietary grab, like sRGB and ProPhotoRGB
http://en.wikipedia.org/wiki/Srgb
http://en.wikipedia.org/wiki/ProPhoto_RGB
I can fix this in GIMP easy enough,
http://en.wikipedia.org/wiki/GIMP
but it really goes beyond the "good enough" color category for even
consumers I think
any one know what is actually happening here?
I can fix it easy. Get rid of sRGB and ProPhotoRGB and use an RGB
related more to the eye (CIE) than an output device or film
http://en.wikipedia.org/wiki/CIE_1931_color_space
its been 20 years since I first said at Kodak R&D that sRGB would mean
an easy out from the development of real device independent color
management workflows
http://en.wikipedia.org/wiki/International_Color_Consortium
yes, I learned since you need a wider gamut than an ideal print to
accommodate all applications, but there DOES need to be a RELATIVE
appearance, unless you are talking about "good enough" color, or "more
attractive" color, which can be handled in many ways, I think "accurate"
which is defined as CIE is a better starting point than video or film
http://en.wikipedia.org/wiki/CIE_1931_color_space
--
Dale
Dale