17 votes

Relationship between tint-temp and magenta-green-blue-amber white balance corrections?

Tint is the green-magenta axis, temperature is the blue-amber axis.
Aram Hăvărneanu's user avatar
15 votes

Photoshop's color replacement tool changes to grey (instead of white) — how can I change a grey background to pure white?

Graphic Design Stack Exchange: How to cut how hair accurately Advanced hair extraction tutorial First off, plugins and simpler methods are available. This is if you want to get higher quality results. ...
RyanFromGDSE's user avatar
  • 2,447
15 votes

Remove color cast in darktable?

Within the white balance module you can select "spot" from the preset drop-down list to remove color cast based on a selected area. By default, the entire image except for a margin around the edges is ...
junkyardsparkle's user avatar
13 votes
Accepted

Photoshop's color replacement tool changes to grey (instead of white) — how can I change a grey background to pure white?

The color replacement tool isn't working for you because its default mode is "Color", which changes hue and saturation, but not luminosity (brightness/value). That's why you get the blue or the gray→...
mattdm's user avatar
  • 143k
11 votes

What do I need to photograph paintings with accurate color?

The gear actually isn't as important in your situation as the workflow to preserve color accuracy. The main issues you'll need to consider are: Accurate white balancing when shooting. This typically ...
inkista's user avatar
  • 51.9k
11 votes

What's the correct term when a photo is over saturated?

Another relevant term is Clipping, see: https://en.wikipedia.org/wiki/Clipping_(photography) Images exhibiting Clipping will often show areas of solid white, but ...
meklarian's user avatar
  • 909
9 votes

Sony DSC-RX100 gives unnatural (depressive) colors

I see no problem at all with any of the images you linked to. I suspect the actual problem is how your display is adjusted. I'd suggest you try this page and see how that works. The sample you ...
StephenG - Help Ukraine's user avatar
9 votes

Vintage vs modern B&W photography techniques differ in color luminance - what's going on here?

Just to expand on Matt's answer a bit. Most B&W films used during the first half of the 20th century were not panchromatic. They were much more sensitive to the energy in blue light than the ...
Michael C's user avatar
  • 175k
9 votes
Accepted

Why color-wheel websites (Adobe...) claim these colors are complementary

Not all color wheels are alike. The traditional/old school RGB color wheel (like Krita's) begins with the three primaries at 120˚ intervals; which places red opposite cyan, such as this wheel. ...
Steven Kersting's user avatar
8 votes

What do I need to photograph paintings with accurate color?

I used to work as an assistant to a guy who shot accessions for the Corcoran Gallery in DC. He used a standard copy photography lighting technique with two Lowell D (now DP) hot lights reflected out ...
KarlC's user avatar
  • 551
7 votes

Gimp's color options not working

I have been having this problem too in GIMP 2.10.18, and finally figured out what's happening. I had the layer visible and highlighted, but the curves are adjusting the RGB channels. That means that ...
Scott Holt's user avatar
7 votes
Accepted

How to match colors between pictures?

The first step is to observe. The main diference is a slight color on the first image. Method 1 Technicly that is a duotone, it is the easiest way to work it anyway. 1) In Photoshop, convert the ...
Rafael's user avatar
  • 24.5k
7 votes
Accepted

Pictures of a dark violet flower appear light blue. Is this a lens or a technique problem?

The flower is supposed to be dark violet, but it's come out light blue. That indicates the image is overexposed. If the flower is dark, the image of the flower should be a similar tone. So for a ...
MikeW's user avatar
  • 33.3k
7 votes

Pictures of a dark violet flower appear light blue. Is this a lens or a technique problem?

Despite you saying that this does not happen with 55-250mm objective I claim that this is the problem with camera settings. If you finally upload the photograph made with 500D and 55-250mm I may ...
Euri Pinhollow's user avatar
7 votes

Why would a camera change colors on the image when producing JPEGs?

Visible color of an object looks like something objective — if it looks yellow then it looks yellow, why change it in the first place? I just don't see how this color alteration is useful. This is ...
mattdm's user avatar
  • 143k
7 votes

Why does Lightroom not have a cyan-red slider for color correction?

If you look at any color wheel, you have two axes on the wheel: To correct any color cast, this is usually enough. You can correct the main source of color shift in natural light on the temp axis (...
Kai Mattern's user avatar
  • 4,147
7 votes

Will a CTO (or CTB) Gel improve the CRI of a light source

Filters don't add anything, they only attenuate (reduce) part of what is already there more than they reduce other parts of what is already there. If the light source has a low CRI due to missing ...
Michael C's user avatar
  • 175k
6 votes

Correcting severe cyan colour cast

Sadly, there's not much useful color information in the pictures to work with. This is probably not remotely the answer you were hoping for, but... Being a fan of the old tinted postcard look, if ...
junkyardsparkle's user avatar
6 votes

Why are high white balance temperatures redder when warmer objects are bluer?

The Why Different is just a difference between physics and art. The "temperature" simply is the actual color of black bodies when heated high (Like steel in a furnace). They do first glow red, and ...
WayneF's user avatar
  • 12.9k
6 votes

Vintage vs modern B&W photography techniques differ in color luminance - what's going on here?

Photo films and digital sensors do not record colors exactly as seen by our eye / brain vision system. Initially, photo films were only sensitive to the violet and blue region of the visual spectrum....
Alan Marcus's user avatar
  • 38.9k
6 votes

Will a CTO (or CTB) Gel improve the CRI of a light source

Someone is going to come along with better 'numbers' for this, but imagine the Histogram of a picture of a clown in a flower garden. Then add a slope [filter] to that histogram. You still have a very ...
Tetsujin's user avatar
  • 23.2k
6 votes

Can physical color filter and light pollution filters on DLSRs achieve anything that can't be done in post (like with Photoshop)?

No filter shifts any wavelength of light. Filters attenuate some wavelengths more than others. Filters which attenuate along a curve with a complex shape can often be useful because they save a lot of ...
Michael C's user avatar
  • 175k
5 votes

What do I need to photograph paintings with accurate color?

Some general recommendations. 1) The resolution of the file. You need at least 150 ppi for this. At 3 ft you need 3x12x150=5400px on the long side. So you need a 24Mpx file at least. (The ...
Rafael's user avatar
  • 24.5k
5 votes

How to restore color of wood photographed under fluorescent lighting?

Try to use a color checker... oh, too late now. Or try to shoot in raw... oh, to late now too. Try to setup a specific white balance... oh, to late now. (Sorry for puting lemon in the wound n_n ) ...
Rafael's user avatar
  • 24.5k
5 votes
Accepted

How to embed two ICC profiles in an image?

Usually, there's no reason to embed more than more one profile. With an input image, you embed the input profile, so that your colour management system can work out what colours the numbers in the ...
JerryTheC's user avatar
  • 3,033
5 votes

How to edit photos shot in fluorescent light

In addition to setting both the color temperature (blue←→amber axis) and tint (green←→magenta axis) I also often use an HSL (Hue-Saturation-Luminance) tool to remove or minimize remaining color casts. ...
Michael C's user avatar
  • 175k
5 votes
Accepted

What causes blue tint of my photos and how to get rid of it?

On fair days the world is illuminated by a combination of sunlight and skylight. On overcast days, the world is illuminated by skylight only. Now skylight is very blue thus images reproduce with a ...
Alan Marcus's user avatar
  • 38.9k
5 votes

Remove color cast in darktable?

For manual channel-by-channel adjustment, you could try the color balance module. I don't think it's enabled by default, so you may need to activate it using the "more modules" button.
Kahovius's user avatar
  • 2,758
5 votes

Why is my photo partially colour imbalanced?

There may have been CRI issues. The lights are slightly yellowish, so have a relative deficit of blue. Since the hat is already dark, it doesn't reflect as much blue as you would have liked. Your ...
xiota's user avatar
  • 26.9k
5 votes
Accepted

How do I cope with haze for the photos containing sky and trees at a distance?

You can't "fix" distance haze. You can try compensate for it, but you cannot fix it. None of what follows is in any way definitive, it's 5 mins in Photoshop & really rough The method I would ...
Tetsujin's user avatar
  • 23.2k

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