Ah, the window shot. There is brute force, and there is the high IQ solution, as in Mark, John, and Ken’s approaches. (Move the executive, use natural light, or wait for a darker exterior.)
I love John Sharaf’s idea about natural light. Really. The best lighting I ever did was when I sat a farmer down on a bale of hay near the big door in his barn and … just shot! Clearly the way to go if you can. If it was good enough for Rembrandt…
[Ken Maxwell] “Or shoot at dawn, or twilight, or night”
Night – great idea. But dawn and twilight might only work if all the shooting can be accomplished within a few minutes; the lighting outside might change so fast that the background will be different from one ten-minute period to the next.
As for brute force: Putting gel on windows can be a real PITA. You can, of course, go to extremes and achieve perfection with polarized gel (RoscoView?) and a filter on the lens, but I can’t imagine doing that, unless this is going to be a regular set.
In daylight: Unless the window view has to be pristine and beautiful (tropical beach) I wouldn’t be so worried about color temperature; 1/4 blue on the tungstens is fine. Or, use a couple Kino Flos with daylight tubes! If you don’t own a Joker, of course.
I’ve tried Todd Terry’s Harbour Freight version of ND gel – it works. No color correction, of course.
I’ve never tried window screen, but I’d like to. One prep day at an NFL stadium I noticed in the tv announcer’s booth how they must do that iconic first shot, where the two announcers look into the camera with the field behind them. There are a couple of small HMI lights mounted in the booth facing the field. Mounted above the big window is a large roll of black window screen. So I assume they unroll the window screen for the one opening shot; the window screen visually disappears but darkens the background. Looking at the set-up, I could swear it wouldn’t work because the announcers are so close to the screening, but apparently it does. No worries about reflections as with ND gel, either. (One question for Todd: mounting the ND outside the window, you say, helps with reflections. But what about the wind shifting the gel – wouldn’t that cause reflections or distraction of some kind?)