Last week I blogged a version of a recent portrait of my college photography professor, Fred Demarest. I enjoyed my time with Fred during my last visit to Syracuse, and was a bit nervous on the set, really trying to do well, as this was the guy who first critiqued my work as a shooter, a long time ago. So, I kept it simple.
The up front light was a Profoto 2400ws unit, fitted with a beauty dish, draped in a diffuser sock. The Profoto folks have graciously outfitted the Syracuse studios, so the students there have the benefit of top of the line gear to shoot with.
That unit is a very efficient light source, and of course, at 2400 ws, it’s got power to burn. I had it cranking at just about min power, and still had f11 at 1/200th of a second. (Also, I wanted something around f11 to retain sharpness in the background objects.) So, it was with some trepidation that I put an SB 910, running at full power, in SU-4 (manual slave) mode, at the back of the set. I didn’t know if there would be enough juice in that little light. What I needed it to do was light the seamless, which would in turn silhouette the old style constant lights that are kicking around in the SU studio.
I set it up on the little floor stand that comes with the unit, left the dome diffuser on, tilted the head up about 45 degrees into the wall, and let fly. Bingo. That little sucker had just enough power to complete the photo.
Seems a little crazy, when you’re using a monster pack up front, to use a speed light in the back. I use small flash in conjunction with bigger flash all the time, but usually those bigger units are in the 400ws to 1100ws range. Using a 2400 pack, I thought the hot shoe flash might be like a small rock thrown into a deep quarry made of photons. It would vanish immediately.
But, it hung in there. When I overshot it, and the flash did not fire, this is what I got.
Small flash, big difference. More tk….
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