Follow this procedure with any instant film (Polaroid or Fuji), or even a digital back.

Set up your studio lights, make your first exposure/lighting test , and compare it to the strip of images below.

Select how you want to modify your camera settings: Flash, Aperture, or by Shutter ( Tungsten lighting only).

Find the image density that is the closest to the print in your hand, click on it to open a new window. Follow the instructions for you print exposure modification.

Exposure time
(tungsten light only)