...even if the ambient light is well controlled. We did this portrait of Heidi for book #2. That's the one about studio lighting. We (Amy and I) bounced light from the morning sun in the east off a 4x4 foot silver panel sitting ten feet up on a stand outside the studio, in through the bank of west facing windows, thru some soft diffusion and onto Heidi's beautiful face. A little bit of passive fill to the opposite side, with a piece of white foamcore, and we were done. Can't do it today. It's gray and cloudy now.