Hello,
it will be helpful to see the effect of the parameter of the exposure of the camera in the 3D viewport and in the interactive render also when you are not in a camera view ( in 3dsmax you can adjust the F-stop - Shutter Speed - ISO in the environement panel)
Like that it is possible to work in realtime on the 3D viewport, it is helpfull when you work on a night scene using the ies lights
Thank you
...and add white balance value in the exposure parameters