51 votes

What's it called when white objects or white backgrounds become blue in photographs?

This is called a color cast. As others have said, it is a result of an incorrect white-balance. Your camera is assuming that light is of a different color than it is and is compensating for that, ...
Itai's user avatar
  • 103k
38 votes
Accepted

How does Kelvin for color temperature relate to Kelvin for actual temperature?

It is related to a heated substance, albeit in a somewhat theoretical way. The substance is an ideal incandescent black body, which would radiate a given color within a given color space at a given ...
junkyardsparkle's user avatar
38 votes
Accepted

Should changing the shutter speed affect the moon's color?

but why i can see little bit of orange color with shutter speed 1/400 ? My best guess is that you had the camera set to automatic white balance (AWB). In the 1/200s shot, the moon was bright enough ...
Caleb's user avatar
  • 31.7k
38 votes
Accepted

Can you use a phone as grey/white card?

No, it won't work. The gray card works by reflecting ambient light (here "ambient" is used to include whatever flash, gels, etc. you're lighting your scene with other than the phone). You know it's ...
L. Scott Johnson's user avatar
31 votes

How to keep right color temperature if I edit photos with night light mode turned on?

"Night Light" or "redshift" or other night light color apps don't do anything (as far as I know) to protect your eyes. Their intended function is to protect your sleep -- blue ...
Zeiss Ikon's user avatar
  • 7,113
28 votes

How does Kelvin for color temperature relate to Kelvin for actual temperature?

Wikipedia's introductory statement on color temperature relates them quite well: The color temperature of a light source is the temperature of an ideal black-body radiator that radiates light of ...
scottbb's user avatar
  • 32.3k
26 votes
Accepted

Is the white balance wrong in these field poppy pictures?

What is going on? I compared both pictures of the field (left out the one with the tractor, as it suffers from the same problem as the other over-exposed picture, IMHO) in After effects. The image ...
flolilo's user avatar
  • 6,467
20 votes

Raw photo for scientific purpose. How to set white reference to defined numeric L*a*b value?

Sounds a bit iffy to me... A card, by itself, DOESN'T have a fixed L*a*b* colour - that's a product of the reflectivity of the card at different wavelengths and the intensity and wavelength ...
JerryTheC's user avatar
  • 3,003
19 votes
Accepted

Why is the range for manual white balance so limited at the bottom and top?

Digital color works by separating light into three channels: red, green, and blue. This roughly mimics the way the human vision system creates the perception of color. Our vision system compensates ...
mattdm's user avatar
  • 143k
18 votes

How does Kelvin for color temperature relate to Kelvin for actual temperature?

The colour temperature is related to the black-body radiation produced by hot objects. The black-body radiation curve, shown below, shows the approximate intensity* curves at each wavelength for the ...
Andrew's user avatar
  • 405
18 votes
Accepted

Sunny day in the shade - how to deal with white balance and exposure settings?

This is the situation when you use fill-flash. Contrary to common belief, flash is NOT to be used in darkness. In darkness flash lights up the foreground and leaves background pitch black. Flash is ...
Agent_L's user avatar
  • 2,090
18 votes

Auto white balance shifting from cooler to warmer during photo shoot

Ahhh...the "curse" of auto-white balance. I don't use AWB and ... based on reading, it seems like few photographers suggest using this feature. You did not mention a camera brand-model ... ...
Tim Campbell's user avatar
  • 3,897
18 votes
Accepted

Why does the image get bluish and not yellowish when I shift the color temperature to a lower K?

Because the color temperature that you give in photo editing is the assumed color temperature of the light source used for the original picture. With a low temperature light source the colors are ...
xenoid's user avatar
  • 20.6k
17 votes

Help for a film shooter: how to cope with the paradox of choice?

There's no one way. Personally I find digital frees me to defer choices until after the shot. Not only that but I can "discover" new interpretations of a scene with different crops, different toning,...
StephenG - Help Ukraine's user avatar
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
Accepted

What's it called when white objects or white backgrounds become blue in photographs?

Your camera, for whatever reason, is setting the color temperature and white balance at different points for the two images. That gives it what we often call a color cast, tint, or hue which simply ...
Michael C's user avatar
  • 175k
14 votes

If, brightness → dynamic range... white balance → what?

The phenomenon you describe is called color constancy, and it is enabled partially by the human vision system's chromatic adaptation and partially by something I will describe using the scientific ...
mattdm's user avatar
  • 143k
13 votes

How to keep right color temperature if I edit photos with night light mode turned on?

TLDR: Turn Night Light off. Calibrate your monitor with a colorimeter. How to keep right color temperature if I edit photos with night light mode turned on? Normally, you can't because the intensity ...
xiota's user avatar
  • 26.9k
12 votes
Accepted

Why do my photos have an exaggerated blue hue when I shoot in manual mode?

Auto mode is auto exposure, and it also always uses auto White Balance and auto ISO, which cannot be turned off in Auto mode. Auto mode is "auto everything". The A,S,P,M modes only set exposure, but ...
WayneF's user avatar
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11 votes
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Raw photo for scientific purpose. How to set white reference to defined numeric L*a*b value?

This frequently comes up in photographic reproduction jobs where one is trying to closely approximate some other object such as a painting antique drawing. This cannot be done with typical photographs ...
doug's user avatar
  • 1,207
11 votes
Accepted

Why can software correct white balance more accurately for RAW files than it can with JPEGs?

Why can software correct white balance more accurately for RAW files than it can with JPEGs? There's a fundamental difference between working with the actual raw data to produce a different ...
Michael C's user avatar
  • 175k
9 votes

Do fluorescent lighting and shutter speed create a problem with color cast?

The answers given by whuber and Matt Grum are correct, pointing out the flicker problem and some workarounds. My addendum comes 6 years after, where we are now beginning to see some real solutions to ...
Nayuki's user avatar
  • 745
9 votes
Accepted

Why do we actually need to adjust white balance?

The perceived color of an object depends on two elements: the intrinsic color of the object, and the color spectrum of the light shining on it. A red apple for example, will appear nearly black with ...
whatsisname's user avatar
  • 1,192
9 votes

How does Kelvin for color temperature relate to Kelvin for actual temperature?

As the other answers note, colour temperature corresponds to blackbody radiation at that temperature. But why do we care about that? To understand that, you must first ask yourself "What is white?" ...
Luaan's user avatar
  • 269
9 votes
Accepted

What temperature lighting should I use for photographing old paper photos?

The color temperature of your bulbs is not as important as you seem to think. What is important if you require fairly critical color accuracy is that, regardless of the temperature their output is ...
Michael C's user avatar
  • 175k
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

Help for a film shooter: how to cope with the paradox of choice?

I also came to digital from film. For me personalty I shoot only in RAW, when I post process I strive to achieve realistic colors and a true representation of the scene as I remember it. My opinion ...
Alaska Man's user avatar
  • 3,606
9 votes
Accepted

How do I find the right white balance value to set in my camera?

First, realize that "color temperature" is but one axis that runs from amber to blue. Most natural light sources fall fairly close to the color temperature scale, expressed in Kelvin, because the ...
Michael C's user avatar
  • 175k
8 votes

When do I have to readjust the white balance in studio?

The light and the dress both have influence on the white balance, because light reflects off of the dress. In practice, most of the light usually comes directly from the light source, walls, or ...
Dietrich Epp's user avatar

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