Vray Tutorial
In this module, we cover the Advanced options of the V-Ray Physical Camera settings.
Film Sensitivity (ISO) controls the sensitivity of the virtual film/sensor - higher values make the image brighter
Aperture (F number) controls how open the lens aperture is. Lower values mean a wider open aperture which lets more light into the lens and makes the image brighter.
Shutter Speed (1/s) controls the speed at which the shutter opens and closes. This value is in inverse seconds which means the actual speed is 1 divided by the specified value seconds. Higher values make the shutter open and close more quickly which lets in less light and makes the image darker.
All the lights in the scene have been set with realistic intensities and the EV has been pre-set to have a reasonable exposure. Play around with each of the three parameters and note how they affect the final image. This approach is suitable for matching real-world photos to a CG image because the Physical Camera parameters match the settings of a real-world camera.