<p>Thanks for the other good answers. Here is what I ended up doing.</p>

<p>I created a blank white html page and made it fullscreen, and then used f.lux to adjust the color temperature. It worked for me, but I should point out to anyone looking to use this solution in the future that it isn't perfect. F.lux doesn't give a very broad range of color temperatures. They were enough for my purposes, but someone looking for a very warm or very cool look might not be satisfied. In addition, f.lux changes the color temperature for the entire desktop on all monitors, so if you have something color-sensitive running during the shoot, like using the computer as a monitor, your colors will be off on that as well.</p>

CC BY-SA 3.0
2015-04-15T13:22:44.883Z
2015-04-15T13:22:44.883Z
KC McLaughlin
<p>If you can't adjust the monitor, then send it something other than pure white. </p>

<p>@poor already posted an answer to do this with Blender, but that seems like HUGE overkill.  I would have just booted Linux, logged in remotely, and done <code>DISPLAY=:0 xsetroot -solid '#fff'</code> to set a solid white background, or any other color I wanted.</p>

<p>And there's probably something you could run to open a fullscreen window with a color of your choice, to save the trouble of switching to a window manager that didn't clutter up the screen borders with stuff.  Maybe a screensaver type of program?</p>

<p>I can't think off the top of my head what would give you a GUI color adjuster that would change most of the screen in realtime.</p>

CC BY-SA 3.0
2015-04-11T14:41:05.007Z
Using a seperate OS seems even more overkill than installing a freeware program tbh
MoritzLost
CC BY-SA 3.0
2015-04-11T14:46:11.260Z
You could additionally mention that it's possible to boot it via usb stick.
p2or
CC BY-SA 3.0
2015-04-12T01:06:24.600Z
@Gin-San: If it was a computer I owned, it would already be running Linux :P  Obviously go with whatever OS you already use.
Peter Cordes
CC BY-SA 3.0
2015-04-11T13:26:32.720Z
2015-04-11T13:26:32.720Z
Peter Cordes
<p>Here is a hack. You can use Blender and the <a href="https://www.blender.org/manual/render/cycles/nodes/more.html?highlight=blackbody#blackbody" rel="nofollow noreferrer">Blackbody Node</a> of <em>Cycles Render Engine</em>. Following example shows a <strong>realtime viewport animation</strong> of the color temperature in kelvin:</p>

<p><img src="https://i.sstatic.net/aYvG9.gif" alt="enter image description here"></p>

<ul>
<li>Create some geometry (e.g. a plane) as <strong>light emitter</strong></li>
<li>Setup an <strong>Emission shader</strong></li>
<li>Create a <strong>Blackbody node</strong> and plug it into the <strong>Emission Color</strong></li>
<li>Position your camera</li>
<li>Switch your Camera by pressing <kbd>Numpad 0</kbd></li>
<li>Set the <strong>Viewport Shading to Rendered</strong> or press <kbd>F12</kbd> to render the image</li>
</ul>

<p><img src="https://i.sstatic.net/mnMHm.png" alt="enter image description here"></p>

<p><a href="http://www.pasteall.org/blend/35540" rel="nofollow noreferrer"><strong>blend file</strong></a></p>

<hr>

<h3>Renderings</h3>

<p><img src="https://i.sstatic.net/rCtnT.png" alt="enter image description here"></p>

<p><em>2000K</em></p>

<p><img src="https://i.sstatic.net/q1nR9.png" alt="enter image description here"></p>

<p><em>4000K</em></p>

<p><img src="https://i.sstatic.net/EZWAh.png" alt="enter image description here"></p>

<p><em>6000K</em></p>

CC BY-SA 3.0
2015-04-11T12:32:13.067Z
Ya, good idea.  If you can't adjust the monitor, then send it something other than pure white.  Blender seems like HUGE overkill.  I would have just booted Linux, logged in remotely, and done `DISPLAY=:0 xsetroot -solid '#fff'` to set a solid white background.
Peter Cordes
CC BY-SA 3.0
2015-04-11T12:45:34.987Z
@PeterCordes Thanks Peter. You are right, OP was asking to control it by kelvins and I thought Cycles is physically accurate and have an instant viewport interactivity/rendering, so it could work :) Why not converting your comment into an answer? I would like to upvote it ;)
p2or
CC BY-SA 3.0
2015-04-11T13:31:05.133Z
sure, why not? :P
Peter Cordes
CC BY-SA 3.0
2015-04-10T19:59:59.823Z
2015-04-15T11:07:06.407Z
2015-04-15T11:07:06.407Z
p2or
<p>I'm shooting a scene for a film where the actor will be placed in front of a computer monitor. I want to use the monitor to light the actor, but I want to be able to adjust the color temperature to get the look I want. I have F.lux (<a href="https://justgetflux.com/" rel="nofollow">https://justgetflux.com/</a>), so I know changing monitor color temperature is possible, but I want to be able to control it. Preferably the program would be free, and I would be able to adjust the temperature in real time.</p>

CC BY-SA 3.0
2015-04-10T19:06:14.803Z
What do you want to show on the screen?
p2or
CC BY-SA 3.0
2015-04-10T19:07:36.107Z
I was planning on using a white image fullscreen, and then being able to adjust the temperature from there.
KC McLaughlin
CC BY-SA 3.0
2015-04-10T19:31:35.447Z
You *can* use flux to set your monitor temperature manually ... also, what monitor are you using? Mostly all mordern monitors have in-built options to change color saturation, temperature, brightness ... or, even easier, couldn't you just use an orange/red/whatever-colored image in fullscreen mode?
MoritzLost
CC BY-SA 3.0
2015-04-10T22:24:01.607Z
I have an older AOC monitor, the settings on it aren't very in-depth. The main issue is I want to be able to adjust the temperature live so I can see what it looks like, which is why I want a program. I did look into f.lux settings a little more, and it allow some modification, but I'd like something a little more flexible if anyone knows of something like that.
KC McLaughlin
<software-recommendation><software><lighting><color>
Is there a program that can change monitor color temperature for lighting?
KC McLaughlin
# Is there a program that can change monitor color temperature for lighting?

(Asked by: username_0 on 2015-04-10)

I'm shooting a scene for a film where the actor will be placed in front of a computer monitor. I want to use the monitor to light the actor, but I want to be able to adjust the color temperature to get the look I want. I have F.lux (<https://justgetflux.com/>), so I know changing monitor color temperature is possible, but I want to be able to control it. Preferably the program would be free, and I would be able to adjust the temperature in real time.

**Tags:** software-recommendation, software, lighting, color

> **Comments:**
> **username_1**: What do you want to show on the screen?  
> **username_0**: I was planning on using a white image fullscreen, and then being able to adjust the temperature from there.  
> **username_2**: You *can* use flux to set your monitor temperature manually ... also, what monitor are you using? Mostly all mordern monitors have in-built options to change color saturation, temperature, brightness ... or, even easier, couldn't you just use an orange/red/whatever-colored image in fullscreen mode?  
> **username_0**: I have an older AOC monitor, the settings on it aren't very in-depth. The main issue is I want to be able to adjust the temperature live so I can see what it looks like, which is why I want a program. I did look into f.lux settings a little more, and it allow some modification, but I'd like something a little more flexible if anyone knows of something like that.  

---

## 3 answers

### Answer by username_0 on 2015-04-15. Score: 0 | Accepted answer

Thanks for the other good answers. Here is what I ended up doing.

I created a blank white html page and made it fullscreen, and then used f.lux to adjust the color temperature. It worked for me, but I should point out to anyone looking to use this solution in the future that it isn't perfect. F.lux doesn't give a very broad range of color temperatures. They were enough for my purposes, but someone looking for a very warm or very cool look might not be satisfied. In addition, f.lux changes the color temperature for the entire desktop on all monitors, so if you have something color-sensitive running during the shoot, like using the computer as a monitor, your colors will be off on that as well.


---

### Answer by username_3 on 2015-04-11. Score: 2

If you can't adjust the monitor, then send it something other than pure white.

@poor already posted an answer to do this with Blender, but that seems like HUGE overkill. I would have just booted Linux, logged in remotely, and done `DISPLAY=:0 xsetroot -solid '#fff'` to set a solid white background, or any other color I wanted.

And there's probably something you could run to open a fullscreen window with a color of your choice, to save the trouble of switching to a window manager that didn't clutter up the screen borders with stuff. Maybe a screensaver type of program?

I can't think off the top of my head what would give you a GUI color adjuster that would change most of the screen in realtime.

> **Comments:**
> **username_2**: Using a seperate OS seems even more overkill than installing a freeware program tbh  
> **username_1**: You could additionally mention that it's possible to boot it via usb stick.  
> **username_3**: @Gin-San: If it was a computer I owned, it would already be running Linux :P  Obviously go with whatever OS you already use.  

---

### Answer by username_1 on 2015-04-10. Score: 2

Here is a hack. You can use Blender and the [Blackbody Node](https://www.blender.org/manual/render/cycles/nodes/more.html?highlight=blackbody#blackbody) of *Cycles Render Engine*. Following example shows a **realtime viewport animation** of the color temperature in kelvin:

![enter image description here](https://i.sstatic.net/aYvG9.gif)

* Create some geometry (e.g. a plane) as **light emitter**
* Setup an **Emission shader**
* Create a **Blackbody node** and plug it into the **Emission Color**
* Position your camera
* Switch your Camera by pressing `Numpad 0`
* Set the **Viewport Shading to Rendered** or press `F12` to render the image

![enter image description here](https://i.sstatic.net/mnMHm.png)

[**blend file**](http://www.pasteall.org/blend/35540)

---

### Renderings

![enter image description here](https://i.sstatic.net/rCtnT.png)

*2000K*

![enter image description here](https://i.sstatic.net/q1nR9.png)

*4000K*

![enter image description here](https://i.sstatic.net/EZWAh.png)

*6000K*

> **Comments:**
> **username_3**: Ya, good idea.  If you can't adjust the monitor, then send it something other than pure white.  Blender seems like HUGE overkill.  I would have just booted Linux, logged in remotely, and done `DISPLAY=:0 xsetroot -solid '#fff'` to set a solid white background.  
> **username_1**: @PeterCordes Thanks Peter. You are right, OP was asking to control it by kelvins and I thought Cycles is physically accurate and have an instant viewport interactivity/rendering, so it could work :) Why not converting your comment into an answer? I would like to upvote it ;)  
> **username_3**: sure, why not? :P  

---

