"Exposure Control" management

[lucarosty]

Hello friends, doing some exposure control tests, I noticed that when I exclude exposure control from the V-Ray Cam it seems that the exposure control works only with Max's Physical Camera exposure control inside the 'Environment, the classic way to manage exposure.
In fact I would have expected that excluding the control from the V-Ray cam I had to use the V-Ray Exposure control, but no, why this?
And above all, are there other ways?
Use Max 2019 and V-Ray Next 1.1

Thank you all for your attention and I apologize for my bad English.

Luca

[Morne]

If you're using the VRayCam you dont need to use any exposure control in environment as everything you need is built into the VRayCam already

[lucarosty]

Hello Morne thanks for the reply, yes, I know it, I was just running tests and I noticed this.
But I would like to know why when you exclude the control from the V-Ray Cam you have to use Max's Physical and not the V-Ray Exposure, is it a choice of Chaos?

[Morne]

VRayPhysicalCam - Exposure built in > no need for any exposure control in Environment (disable any exposure control in Environment)

StandardCam > use V-Ray Exposure Control in Environment
Max Physical Cam - Exposure built in, however > Need to use in conjunction with Max's Physical Exposure Control in Environment

The VRayPhysicalCam was designed and implemented 1st, long before Max had a physical cam. With the introduction of the Max physical cam (which Autodesk kind of based on VRay's Cam) , Chaos Removed their VRayPhysCam as it was no longer needed. Users complained (including me), and Chaosgroup decided to bring back the VRayPhysicalCam