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I'm working with indoor lighting. I have a small room with two windows. I'm trying to create an atmospheric light. I have something like this

(sorry for a bad quality) image

For that I used a spot lamp... The result is good but the room is too dark and it's hard to see objects in the room (if I place any). I thought about adding planes to the window frames, that would emit light, but how do I make plates let the atmospheric light through? Mostly the question is about where and how I can put additional lights, and whether I need to do that.

What I want is to have atmospheric light, but at the same time add some light to the room so that I can see other objects more clearly.

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  • $\begingroup$ Isn't increasing the spot lamp's strenght making the scene brighter? $\endgroup$ – Carlo Jul 15 '16 at 17:55
  • $\begingroup$ well no so much, it is make it more sharp on shades but corners still dark, what why I thinking about making additional light. Im more interested to see if somebody worked with atmospheric light in their scenes, what do they do. Do they add more light? $\endgroup$ – alex_mike Jul 15 '16 at 17:59
  • $\begingroup$ have you seen this video ? creativeshrimp.com/volumetric-lighting-blender-tutorial.html $\endgroup$ – lemon Jul 15 '16 at 18:06
  • $\begingroup$ thanks, for the video, give me more information about improving my light. $\endgroup$ – alex_mike Jul 15 '16 at 18:14
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Whenever you are dealing with volume scatter and volume absorption your light sources will seem not as bright. Depending on the settings used for volume, a lot of the light is lost due to scattering, so it is normal to have lights that are much brighter than normal.

enter image description here

Without changing your current setup or adding any more lights you can use the ASC-CDL node to change the values for your scene and control the contrast and brightness:

enter image description here

More info on the CDL see this post: What is the the ASC-CDL node?

For even greater and more nuanced control on your image, use the powerful color management options, you and use custom Lookup Tables (LUTs) to control how the values for the scene are mapped into the sRGB values.

More info here: Render with a wider dynamic range in cycles to produce photorealistic looking images

enter image description here

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One idea would be to add a light source inside the room, make it invisible in the render, and set it on a low strength. That could add more light in general to the room without hiding the lines of the windows.

Also, if you have adobe products you could easily increase the brightness of your image in photoshop. Hope these ideas help!

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  • $\begingroup$ You would need to make any additional light invisible to the volume as well. $\endgroup$ – cegaton Jul 15 '16 at 19:04
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    $\begingroup$ Also, there is no need to leave blender to alter the contrast or brightness values of the rendered image. Blender has very powerful tools to do color correction. $\endgroup$ – cegaton Jul 15 '16 at 19:43

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