Questions tagged [color-spaces]

A colour space is a specific organization of colours. In combination with physical device profiling, it allows for reproducible representations of colour, in both analogue and digital representations. The colour spaces most commonly encountered in photography are Adobe RGB and sRGB.

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Why does the imported JPEG from my Canon Powershot G9X Mark II on PC screen differ quite significantly from the camera display? [duplicate]

Consider the attached sample images. I took them circa 4:50 AM and 3:50 AM, respectively. On the Live View display of the Powershot G9X Mark II, they were full of light. The pictures were taken as ...
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86 views

How would I construct the CIE Yxy diagram? [closed]

It seems most references showing a CIE Yxy diagram can be reduced to very few (one?) sources. If I wanted to construct the diagram myself from some published measurement values, how would I do it? I'...
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Standard color space more vivid than Adobe RGB in Dell DELL UP2516D?

I noticed than the Standard preset of colors of my monitor produce more vivid colors than Adobe RGB preset. As far as I know, the monitor can reproduce both sRGB and Adobe RGB. Thought that the Adobe ...
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0answers
60 views

Is there a way to see CIE 1931 chromaticity diagram in its true color?

As I understand, on ordinary monitor I could only see a subset (e.g. sRGB) of the horseshoe shape of visibile color. Is there any lab device that could generate all the visible colors and project ...
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3answers
103 views

How do monitor and image editing software color profiles interact?

I've Googled, I've Bing-ed, I've even DuckDuckGo-ed, but I can't figure this out. Here it is: My monitor has its own color profile, currently "eyeball" calibrated but soon to be really calibrated. ...
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245 views

ColorSync found bad profile on Mac. What are the possible side effects?

Today something led me to discover ColorSync Utility under Applications > Utilities. Upon Verify I discovered 9 bad profiles on my Mac. Searching for profiles... Checking 63 profiles... /Library/...
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4answers
715 views

Should I use ProPhoto RGB?

I am fairly new to photography, and I have heard many people say that I should import my images in Photoshop using ProPhoto RGB as color space (only for the RAW images). However, when I import my ...
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150 views

Is it possible to buy chromaticity-plot color standards? If so, how, and where?

(I hope this is the correct site to ask this; if it isn't, sincere apologies ─ and please help me find a good place to ask :-).) I'm a physicist and I've been dabbling in color theory for some time, ...
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114 views

How does Lightroom group colors inside the HSL panel?

I am working on a small application that would allow the same functionality as the Lightroom HSL Panel: I would like my application to behave very similarly to how Lightroom does. Therefore I grouped ...
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1answer
61 views

SilverFast CIELab: What illuminant and observer is assumed?

I am scanning prints with the scanner software SilverFast, which offers the option to scan to a file containing CIELab values. However I need to know what CIE illuminant and observer is assumed when ...
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1answer
110 views

How to process images to emulate mismatched color profiles?

I have been trying to emulate a saturation effect that occurs when I do the following in Photoshop: Select the Export As dialog and choosing JPEG without integrating an ICC profile Select the Open ...
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2k views

Which color space is used by my iPhone 8 photos?

While my old iPad mini photos say their color space is sRGB, my new iPhone 8 photos tell me their color space is "65535" ("unknown value"). Some sources say this value means "uncalibrated", but that ...
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1answer
94 views

Are these versions of sRGB v2 the same?

I have seen references to two versions of sRGB v2 IEC 6 1966-2-1, for example here ICC.1: 2001-04, for example here Are these the same, or different? They come from 2 different organizations (IEC=...
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2answers
503 views

After soft-proofing in Lightroom, which color space should I embed with the exported JPG?

Let's say I've loaded my print shop's ICC profile for the printer/paper/ink combination I'll be using into Lightroom, I've soft-proofed the image in the Developer module with said ICC profile, and I'm ...
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1answer
32 views

Are the sliders in Adobe Camera Raw input color space independent?

Are the sliders (shadows/highlights) in Adobe Camera Raw affecting the device-dependent data before transformation to device-independent color space, or does this transformation happen after the input ...
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1answer
279 views

How to create abstract color profile to encode specific color transformation?

I have a set of images (48-bit TIFF) that are encoded in ProPhoto RGB. I have a set of alternative input color profiles (related to ProPhoto RGB, but slightly different) that I can assign to the ...
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5answers
4k views

Colors are different in Adobe Camera Raw compared to Photoshop (sRGB)

Here is a .NEF raw file taken with a Nikon D7000, opened in Camera Raw. Note that sRGB IEC61966-2.1 is chosen as the colour profile. I have not modified any image settings. The reds appear washed out....
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1answer
1k views

Photoshop color profile mismatch when open raw

When i open my raw files in adobe photoshop, a message box opens asks: the document has an embedded color profile that does not match the current RGB working space. Embedded: Adobe RGB (1998) ...
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3answers
129 views

What are the benefits of profiling a factory-calibrated AdobeRGB monitor?

Suppose I have a high-end monitor that supports AdobeRGB natively and is calibrated at the factory. Assume that I just got the monitor and that factory calibration is spot on. Do I still need ...
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2answers
3k views

What does “calibrating a screen to sRGB” mean?

I occasionally read on Internet the mention of "calibrate your display to sRGB" or "a display calibrated to sRGB". Now, I am no expert in color management, but I have this thick book which I am ...
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1k views

lightroom photo export with sRGB profile

I work on a calibrated Full gamut monitor, and switch between lightroom and Photoshop for my editing. Both are set to work in AdobeRGB color mode. After all edits are done, i go to export, and set the ...
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How does the in-camera color space setting affect RAW files? [duplicate]

When I switch my Nikon D750 from sRGB to the Adobe RGB color space in the Photo Shooting menu, how does it affect the content of my NEF files? I understand what would happen to JPEGs, but the camera ...
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1answer
4k views

Color profile inside JPEG file

1) What is the best practice for color profiles embedded in .JPG images, for web? (non print) sRGB profile stored in .JPG file ? AdobeRGB profile stored in .JPG file ? no profile setting in .JPG file ...
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1answer
240 views

Humanae pantone colors to RGB conversion

How to find the RGB color codes for the humanae project-humanae link. It uses pantone colors, but the codes given in the website at humanae couldnt be found on pantone color finder at pantone-color ...
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2k views

How to do batch conversion from Adobe RGB to Srgb

I have a lot of pictures (almost a full 4gb memory card) that I accidentally shot in Adobe RGB on my Sony SLT a35. Will Adobe RGB images look different or unrealistic if seen/displayed on a monitor (...
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3answers
216 views

Why does editing software not care about colorspace?

TLDR: Editing software does never indicate clearly how effects operate in terms of color spaces, gamma ramps and whitepoints. Why? Since I learned a lot about colorspaces, whitepoints, gamma ramps, ...
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2answers
505 views

Inconsistent image viewing experience

I post-processed a RAW photo in Photoshop in 16bit in the ProPhoto color space and lastly exported it to an 8bit sRGB JPEG image. Now the funny thing is that I experience different results depending ...
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2answers
9k views

P3 Color Pallet vs sRGB

I have RAW images and export them from Lightroom using the default sRGB colorspace and haven't ever had a need to change this for display on websites. However, I develop websites and apps that run on ...
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1answer
326 views

Change JPEG ColorSpace Encoding value

I exported a photo to JPEG without realizing it had embedded Color Profile "ProPhoto RGB". When I opened it in a viewer that, presumably, assumes the sRGB ColorSpace, I really liked the effect. How ...
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3answers
13k views

I used a Spyder 5 Pro from Datacolor to fix my monitor color, and now it's even worse?

I'm using an Alienware 17 R3 with a 4K screen, and my monitor colors were looking off, so I bought a color probe to get my monitor screen as close as I could to print. Made sure all screen and ...
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3answers
502 views

Does saving a file in Prophoto RGB increase filesize?

Does saving a file in ProPhoto colorspace increase filesize? I'd think that given that it contains more informations it would use up more diskspace, (if so, how much more?) on the other hand, the ...
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765 views

Why don't we see charts of the colorspace/gamut of a DSLR?

For many displays, we see the color space or gamut shown on chromaticity charts in comparison with some standard color spaces like Rec. 709, sRGB, Adobe RGB, and Prophoto RGB which gives an indication ...
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1answer
161 views

How are images saved in different color spaces?

I am learning about color spaces, but I am wondering about how computers save color values of each pixel. I know that if an image is in the RGB color space, the computer will save the Red, Green, ...
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2answers
141 views

On iOS, why would one want to pick a 'video' pixel format (16-235) over a 'full' format (0-255)?

Take a look at this screencap from this year's WWDC session 501 "Advances in iOS photography". As an app developer, you can tell the camera subsystem to either use the 'video' pixel format or the '...
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7answers
4k views

What is the actual color space of film in film photography?

I have been thinking about this question for a while now, and I haven't found an answer online. Modern technology (scanners, screens, digital cameras, printers...) use technical color spaces to ...
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1answer
804 views

Tagged or untagged sRGB images for web?

I have a situation and I am interested to find your point of view. We have a calibrated monitor at D6500, tone curve as measured ~2.4, white level ~90cd/m2 and a tagged sRGB / untagged sRGB image ...
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484 views

Why does the result of Photoshop Curves and Imagemagick Curves differ?

When using imagemagick to apply curves (convert -function), the output differs from the output when I'm using a curves adjustment layer in Photoshop. What is the reason for this difference? I'm using ...
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6answers
5k views

Is there free software to compare gamuts?

This questions is related to Why did LR6 soft proofing thought some colors were out of gamut even if they turned out perfect? Since I found out some of my images are out of gamut of the printing ink+...
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4answers
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Why are the color spaces we have access to incomplete?

The question, then: If all colors are combinations of red, green and blue, and my monitor's pixels use all three, why is its color space limited to so small a portion of the actual complete color ...
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1answer
108 views

Soft proofing without physical printer in LR6

I've decided to print out one of my photos with a plotter. So to make sure I will get the right colors I've asked in the print shop what printer and paper are they using so that I can soft proof in ...
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2answers
272 views

Are colour profiles ever stored in RAW files?

Recently on a wildlife photography course, the leader asserted that using aRGB in the camera settings meant less loss of data in the RAW file than if sRGB were used. As I did not understand this I ...
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1answer
1k views

In Lightroom how do you specify Perceptual or Relative when exporting image?

In Lightroom 6 I can use Soft Proofing to see what my image will look like with different profiles, and I can choose whether to do the conversion using Perceptual or Relative. However when I actually ...
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2answers
113 views

Is conversion from one colour profile to another clearly defined

Is conversion from one colour profile to the other other clearly defined ? If I change the ICC profile for an image from sRGB to another profile such as Adobe RGB will it be applied the same way by ...
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1answer
89 views

Does Soft Proofing to a different profile modify the actual photo

Am I right in thinking the difference between using Soft Proofing to a different colour profile (in Photoshop for example) and just changing the colour profile is that with Soft Proofing use of the ...
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2answers
385 views

What's the perfectionist's workflow for taking a photograph from capture to print?

I'm interested in perfecting the 100% ideal method of doing things, keeping the color tones and quality through capturing to the printing and publishing. This isn't about handling the camera or doing ...
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8answers
5k views

Why don't color spaces use up the entire color spectrum?

Take a look at the CIE 1931 chromaticity diagram shown with the sRGB color space gamut. Why are certain colors intentionally left out of color spaces, like you see below? Why not just include all the ...
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2answers
222 views

What colour space does Adobe Lightroom use when displaying photographs outside of the Develop module?

I've already read What colour space does Adobe Lightroom use in the Develop Module? this question but its leave two points unanswered: Does Lightroom use that particular color space throughout or ...
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4answers
904 views

Why don't cameras capture using the CIE XYZ color model?

If the CIE XYZ color model is a better representation of what humans see, then why don't CCD arrays in cameras capture data in a way that maps to it rather than the RGB model? It seems especially ...
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2answers
725 views

What should I do with negative values when computing sRGB colors from spectra?

This question is from the computational side of things. Maybe some of you computational photography folks can help me out. If I have a normalized CIE XYZ tristimulus vector like this one: (x, y, z) ...
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1answer
1k views

When to use LUV and not RGB colourspaces

Some applications extract information from images in the LUV colour space and not directly from the more commonly used RGB. Why is that?