I have found this great photo studio on blendswap.
and i tryed to calibrate the basic scene to blender filmic.
first i created a sphere object and applied a diffuse grey material to it.the grey has 18% value of white (0.18).
this sphere i placed on the tripod object.and created a plane with a colorchecker image on top of it.
i deactivated caustics, for faster and less noise rendering.activated denoising with basic settings.
then selected filmic ,in the colormanagment ,with high contrast look.after a testrender, with 500 samples,i saw artefacts from the denoising,so i increased it to 2000 ,there it looks clean,and go back to 1500 samples, there the artefacts starts to appear.
the tricky part to calibrate was,if the blender filmic look is set to say basic contrast,then the colorchart render appears to dull in the highlights,and if it sets to very high contrast the shadows are do low in the render.
so middle high contrast and high contrast seams good ,for this test ,to get the allmost same RGB values, from the reference color checker pic.
i leave the lightstrengths from the lightsources how it was.so i rendered with different exposure settings,in the film tab,to match the light intensity.
here are my results from the test,with filmic high contrast look,and exposure at 0.88
i used a colorpicker at the test to compare the values from the render and reference color checker pic.
a close up in the viewport