Questions tagged [color-management]

In digital imaging systems, color management is the controlled conversion between the color representations of various devices, such as image scanners, digital cameras, monitors, TV screens, film printers, computer printers, offset presses, and corresponding media. Source:https://en.wikipedia.org/wiki/Color_management

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100
votes
2answers
30k views

Render with a wider dynamic range in cycles to produce photorealistic looking images

To get images that seem more photorealistic, not only a much wider Dynamic Range is needed, but also having the color information desaturate towards white as it would happen in an overexposed ...
31
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1answer
6k views

How to make 3D LUTs and use them in Blender?

Now that I understand a little bit more about how to work with Wide Dynamic Range workflow , scene referred datas and OPS(ASC CDL) node, I'm asking myself how to go further and create my own 3D LUT ...
29
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1answer
2k views

How can Blender be augmented to display color critical and accurate results?

If I need to use Blender within a colour-accurate workflow, what do I have to do to set that up (including hardware calibration, etc)?
23
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1answer
3k views

What is the the ASC-CDL node?

The color balance node in the compositor can be switched to use the ASC CDL How is it used? How is this different from Lift/Gamma/Gain? How do the Offset, Power, Slope options affect the image?
19
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1answer
4k views

How to get accurate colors with Filmic Blender

I'm loving Filmic blender for the wonderful dynamic range. But I am not able to get accurate colors - it always looks little washed out. I understand that it's due to the wider dynamic range of the ...
15
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1answer
2k views

Are there significant differences between Filmic shipped with Blender and its development version?

I've just read that Filmic is not completely implemented: https://developer.blender.org/D2659. Notes: The results appear to be identical to the original Filmic config, but I left out some ...
12
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4answers
2k views

Where do the white lines come from in my composite?

I'm having this issue for years now, and I'm not sure if I am doing something wrong on my end, or if what I would like to achieve - or expect to see - is even possible. My question is about ...
12
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2answers
2k views

Cycles Gradient Texture node: Why “Linear” is not linear on a “default” plane?

I want to render a plane with a linear gradient texture that can be rotated as needed. I've set up a basic working node network as shown: I can rotate the gradient using the Mapping Node - > Texture ...
12
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1answer
810 views

How must I adapt my workflow to work with Scene Referred Data?

I just took the red pill and started watching the real world, in fact the CG real world. I've understood that the default sRGB view workflow is bad. I'm using the color management LUT bassam-test ...
12
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1answer
2k views

When to use sRGB and when not to?

I discovered that in my Scene Color Management, Display Device has always been set to sRGB. When I turn it off, the color of a given RGB now seems to match what I see in say Matplotlib. No matter how ...
12
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2answers
2k views

Why would I use the “Film Emulation” feature?

From what I can tell, this setting alters the exposure and other parameters to simulate a specific film, however why is this any better than exporting a file format that supports high dynamic range (<...
10
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2answers
6k views

How to put a Linear Workflow in practice with Cycles

Most of you probably/hopefully heard of the Linear Workflow before. I've been doing a lot of research lately in regard to this topic and I am happy to say that I think I finally understood the theory ...
9
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1answer
2k views

Using the False Color look in combination with the CDL Node to work on Wide Dynamic Range scenes

The color management for working in cycles can be enhanced to work with wide dynamic range scenes. The idea is to enable working with scenes containing values that exceed the conventional 0-1 range. ...
9
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2answers
2k views

Colour shift when viewing render outside of blender

So this is what occurs the left is original right is when its saved knowing tiff saves it raw, I did it and was able to open it in Photoshop the same way(correct) it was in blender but just like ...
9
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1answer
3k views

How to avoid gradient banding while using a video sequence editor?

I rendered a 80 frame test animation in jpeg format. Used Blender to create the movie. The output format is mp4. The bottom image shows the first of the rendered image on the left extreme. The image ...
9
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1answer
211 views

What are good practices to keep in mind when lighting for scene-referred data?

My understanding is that your lights shouldn't be limited by the dynamic range the default view can show. I'm sure there's more to it than just making lights brighter and over-exposing the default ...
9
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1answer
1k views

Repurposing vector (speed) render layer for optical flow

I'm trying to compute optic flow in my Blender scene using the "speed" render layer (appears as "vector" in the outliner window). This render layer is supposed to return the speed and direction of ...
8
votes
1answer
1k views

How to scale properly HDRI image, to be used in ASC-CDL HDR render?

I've been test rendering lighting my scene using HDR images, trying to get the right value of light and shade from. The problem is, no matter what I do, I can't get the full spectrum in one image, ...
8
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2answers
607 views

Emission shader color saturation clipping

I stumbled on a trick that while working on one project that will help me with another, but I am not sure why it works. When I set the color of an emission shader to a saturation of 1 the shader ...
7
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2answers
1k views

What is the difference between color models (sRGB, Rec709, XYZ, ets) and which cases I need to prefer one of them?

I know filmic uses for wide color range. But what is a display device for? Which cases I need to prefer one of display device settings?
7
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2answers
306 views

Why is it bad to Tonemap exterior scenes?

Please excuse my ignorance (still trying to wrap my head around this) First off, I have watched BlenderGuru, CG Cookie and read the BSE threads from TROY_S and others, and followed this comical ...
7
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3answers
380 views

Colomanagement Workflow - how to achieve requested target RGB Values?

i think this is a colomanagement workflow qestion at its best. Imagine the following scenario: Say there is a nitpicking customer, and he requests the following you from you: Deliver an image showing ...
7
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4answers
3k views

Blender 2.8 image texture node and color space

As of release of Blender 2.8 version the Image texture node has changed, before we had only "Color Data" and "Non color data". Now we have that drop down menu titled "Color space" and various types to ...
7
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1answer
939 views

Color difference in saved images vs Render View

I've noticed that when an image is saved (let's say as a PNG for example), the color doesn't look as vibrant as it does in Blender's Render View. For comparison, here is an image created by saving as ...
7
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2answers
538 views

How do I use the compositor to render with different color management profiles?

I'm using several scenes to render several images at the same time with the File Output nodes in the compositor. I have different Color Management settings in my scenes. Yet when I render my images ...
6
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2answers
793 views

Set color of Blender object based on external data (e. g. temperature) using a colormap

I want to do an animation of a Blender object that changes color over time using a script. I already found out how to change the colors and set the keyframes from a script, but what I would need in ...
6
votes
1answer
910 views

50% Grey at 0.5 instead of 0.18?

why is it that 50% grey is at 0.5 instead of 0.18 in the color selection panels? That doesn't feel consistent with a linear workflow I am used from other apps. thx
6
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2answers
899 views

Can Blender be used to composite HDR photos?

So, I know Blender can render out to .hdr format. And I am also familiar with Blender's compositor. What I don't know much about is the processes or algorithms used to produce HDR photographs, or what ...
5
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2answers
259 views

how does cycles calculate RGB to BW

There are many ways to calculate RGB to BW. Which of those ways does Cycles use in the RGB to BW node? (I took a quick look at the git repository, but it's not searchable and I couldn't find the node ...
5
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2answers
858 views

How do I calibrate exposure to match a gray scale?

EDIT: I need to clarify the question. Kodak sells A gray scale card. It is used to calibrate B&W filming. Film stock exposure is measured with a densitometer. If the film has been properly ...
5
votes
1answer
964 views

What format, codec, and color settings should be used for youtube?

There are probably 10,000 threads and articles dedicated to this and I've read about half of them but none of the suggestions are helping. My scene has the exact contrast and saturation that I need ...
5
votes
1answer
528 views

Blender linear RGB to sRGB conversion

Does anybody knows what operation Blender does when it saves the image to .png file? I am interested in an exact formula, it might be also the source code. What I found in source till now is RGB->...
5
votes
1answer
2k views

How to adjust Cycles color balance

The color an object appears can be set using a Black Body node, which accurately simulates the color an object should have. This is however relative to the color balance/white balance used. An object ...
5
votes
2answers
334 views

UV render pass non-linearity

I am writing a piece of software that needs pre-rendered UV maps for on the fly texture mapping. I tried rendering these maps in blender, but the color values in the resulting image do not change in a ...
4
votes
1answer
2k views

How can i use Filmic with Blender Cycles baking

I want to bake my lighting or light map with Filmic but when i change the color management to Filmic (Blender 2.79+) it has no effect.
4
votes
3answers
888 views

Advantages/disadvantages of various file formats for storing non-color texture data?

We use normal maps, bump maps, and a lot of other special maps that contain non-color texture data. They are stored in image files but in linear color space (without gamma correction), and therefore ...
4
votes
1answer
324 views

Why do the output colours differ from the input when using Filmic Blender in the VSE?

As discussed in Colours from imported MP4 screencast video look dull in Blender, I recently stumbled across what I perceive to be an oddity with the new Filmic colour management: When working with ...
4
votes
1answer
3k views

Combine Filmic Blender and “Standard” Film Emulation

Is it possible to combine the very helpful filmic-blender Color Management with the default Blender Color Management? It helps a lot to light the scenes with the filmic contrast settings, but when it ...
4
votes
3answers
2k views

How can I get more saturated colors when I render?

How can I get more saturated colors when I render? An image comparison is worth about a thousand words. Take this raw render as an example: But then when I tweak it in photoshop I can get this: ...
4
votes
2answers
3k views

Is the render output linear color or 2.2 gamma?

I know Blender can nowadays use a proper linear workflow. The thing that is unclear to me even after reading the support documents is whether or not Blender saves the output with linear color or does ...
4
votes
1answer
2k views

Is there a way to change the color wheel used in the node editor?

I really dislike the color wheel for picking certain colors, especially browns. I would really like a few more options to pick the colors. A large amount of swatches would be especially nice. Now I ...
4
votes
2answers
179 views

White balance / color matching between video/render for vfx shots

What's the best practice for matching colors between video/cgi for vfx shots in Blender? More specifically: I have a simple scene that is lit with one light in real life (2700K). I have carefully ...
4
votes
1answer
129 views

Is Color Management applied to ColorRamps?

While I like aesthetically to render with "Filmic" active it seems to be difficult to work with ColorRamps. The following radial gradient might be a "mask" for a Mix Shader but it´s hard to get a ...
4
votes
2answers
169 views

A question about color

Please consider this image: The color in the top swatch, labeled "original color" is made from an image I downloaded from the web. I cut out a bit of a colored area that I found appropriate, scaled ...
4
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1answer
211 views

Does Blender support importing/exporting REDlog color format?

I'm a VFX supervisor for a student film, and they are filming with a RED camera with REDlog. I haven't found a sure answer anywhere, so I want to confirm: can REDlog video/color be preserved when ...
4
votes
1answer
335 views

How can I export UV Baked Image Filmic Log Encoding Layer (Save as Image)

I recently installed Filmic color and its awesome. My issue is that I use Blender to create and bake textures for an external program. When you bake an image with Filmic installed it actually ...
4
votes
2answers
854 views

Cycles compositor - apply color balance node only on a part of image

In compositor I want to apply color balance node only on a part of image for which I have a mask. I have issue with combining original image with modified part so that a colors aren't mixed together ...
4
votes
1answer
210 views

What are the differences between the two gamma settings

What is the difference between the two gamma settings? The first is found in the color management section of the properties window. The second is the gamma node in the compositor.
4
votes
1answer
837 views

Colors from imported image in compositor aren't displaying correctly

When importing images for use as a starting image in blenders compositor the colors do not display correctly. I tried different ways to fix this issue but can't find a solution. My guess would be ...
4
votes
1answer
644 views

Color differs from Cycles render in Video Sequence Editor

I've made a space scene, rendered it in cycles, and saved the animation frames as .png pictures. Than I used the Video Sequence Editor for making a video out of these pictures. But the result of the ...