So I’m using this physicall starlight & atmosphere addon, a wonderful addon, but it requires to change blender’s addon to -6 to look good.
I’m working on VFX industry, so i need to renderout OpenEXR and ACES colorspace, (ACES isn’t the problem here, i’ve checked using sRGB, same problem)
after making a beautiful scene with the addon, then leaving it to render overnight, then boom everything is overexposed. I’ve done some research, and somehow blender’s OpenEXR Output doesnt read the exposure we do.
if i do the exposure change AFTER the render while the image is already blown out like that, there’s no chance of recovering the lost detail in the exposure,
If you open the exr in Blender’s Image Editor, hit N to open the side menu, and then check the View as Render property, what does it look like with the Exposure at -6?
openEXR is 32 bit. All information is there. You just don’t see it because it is blown out.
Blender (and most other renderers) does something similar internally when rendering. The individual passes are individual 32 bit images. They are then layered on top of each other and converted into a single image. If you try that in the compositor with 32 bit passes you will get the exact same image as your “normal” rendered image.
If you try the same thing with 8 bit or 16 bit png the image will look different. That is becasue 8 and 16 bit images lose information whereas 32 bit images do not.
