3ds max Lighting Adjusting the Camera Exposure Control So to make that happen, I'll disable this check box here that says use physical camera controls if available. When that's on then you can set separate exposure for each camera. But that then invalidates what you do in here so that's very confusing. So I'm going to disable that. And now the changes that I make here in this roll out will effect all cameras, including the perspective view here. The exposure value is the sensitivity and it's default is six. Well I want it to be a bit more sensitive because of my light is not very intense. To increase the sensitivity, reduce the exposure value. And each whole number will reduce it by one F stop or will actually increase the amount of light reaching the sensor by a factor of two. So if I set the exposure value to five, then that doubles the amount of light reaching the sensor. Or four. Set it to a value of three and that's actually probably optimal for this scene with this material. If I bring it to a value of two, then we might get some over exposures here.
