It is just a multiplier to scale the values up and down globally.
Best regards,
Vlado
Thanks Vlado.
that really helped Thanks Vlado
So then Reinhard at default values is the same as Linear Multiply? At least it appears that way when I have the preferences set up for Linear Workflow.
Awesome info Vlado!!!
Yep, if the Burn is at 1.0, and the multiplier is also 1.0, you get the same result as with Linear mapping.
Best regards,
Vlado
Thanks Vlado. That was helpful
So, to try and conclude:
For ‘well balanced’ images, Reinhard with the default values should give a linear mapping look.
To control the way the brightnesses are mapped and prevent colours becoming too blown out too quickly, we use the burn value, where a burn value of 1.0 gives a linear result and a burn value of 0.0 scales the brighter values down so they are not ‘out of range’ or clipped.
Therefore, values between 0.2 and 0.8 (for example) should allow a good compromise between the blown out look of linear and the washed out look of exponential.
-------------------------------------------- (line drawn under that!)
Before 1.5, we always had the Max gamma set to 2.2 and then we used the Gamma colour mapping with 0.4545 as a value. For all ‘colour swatch based materials’ (ie, no bitmaps) we used the ColorCorrect plugin to ensure the colour of the swatches was mapped to a gamma of 2.2. This gave us pretty reliable images and gave a good amount of detail in the shadows.
Now with 1.5, will the above Reinhard settings achieve a similar level of detail in the shadows, and if so, should the Max Gamma settings remain at 2.2 with the ColorCorrect plugin for all colour-swatch based materials?
Gamma correction by itself does not deal with the bright areas (e.g. what was overbright before gamma correction, will be overbright with gamma correction as well). That’s where Reinhard color mapping comes into play. It will preserve the dark areas like I mentioned in my post, so if you use it together with the gamma 2.2 mapping, I guess it should be fine.
Best regards,
Vlado
okay, but to clear it up for me, what is a description of Gamma Correction color mapping?
:?
Now with 1.5, will the above Reinhard settings achieve a similar level of detail in the shadows, and if so, should the Max Gamma settings remain at 2.2 with the ColorCorrect plugin for all colour-swatch based materials?
Yes, carry on using Max Gamma at 2.2, ColorCorrect plug-ins, it works fine. the only thing i do different to LWF before 1.5 is use the sRGB button in the VFB to add the 2.2 curve to the render ( i guess you could just change the gamma in the Reinhard colour mapping settings to 1, 0.4545 , would do the same).
I find Reinhard close but off from LWF. I think Reinhard is faster in many regards but the colors are slightly off from what they should be.
Yeah i agree, its not quite the same as LWF.
I like the outcome of LWF and my “s” curve color correction in PS 
Really fixes up the grayness problem that is quite common in LWF renders.
I have yet to play with reinhard properly, but using 1.0/0.45454 wouldnt work, you would probably have to try gamma 2.2 in the rollout there.
Yeah the lil “S” curve is the way
And yeah 1.0 / 0.4545 wouldn’t work, Typo! I meant 2.2 
do tell
Well after you have your LWF rendered out. Take it into PS and apply the following color correction and put in 2 control points and place them accordingly.
This is a badish example (see below) as you cant move the points too much as its a rather dark contrasted image already.
In a normal interior render for example you can move them further up and down making it look more like an S hehehe
Below is the S curve for this render, plsu before and after shots. You will notice that the after has much richer colors and alot less gray.
“S” Curve
Before
After
Anyway try it out and see what you think.
nice imgs daforce
Nice images from a nice scene
Isma has some nice scenes floating around thats for sure!