On Nov 21, 2007, at 15:58, Jack Davis wrote: > Only for the sake of discussion (actually I can't discuss the > question, > only raise it), why don't two lights (540 flash units for example) > wash > out or cancel each other's shadows? > Example: one flash on either side on a plane with the camera, lighting > a common subject. > Must assume perfection in placement with respect to all distances and > angles even though it's not a requirement. Offered to avoid the issue > being raised. > I've known for sometime that the 'wash out' doesn't happen, but the > only answer I've ever gotten; "they just don't". >
Can't answer the question, but I avoid the issue by doing it this way: I use a flash in front of the subject (on camera) and a second one behind the subject to light up the wall behind them. That way, the rear flash has more power (closer to the wall) than your head-on flash and "tada!" no shadows. Example here (headshot for work) (warning! full-sized image!): http://charles.robinsontwins.org/photos/2007/imgp8627_heather.jpg This photo was taken with the camera rotated ccw, with the flash (af540fgz) rotated upwards and a sto-fen on top of the on-camera flash to smooth things out. The Sigma EF500DG was on a table behind her aimed upwards at a 45-degree angle to hit the wall. This ain't art, it's just a photo for work. :-) -Charles -- Charles Robinson - [EMAIL PROTECTED] Minneapolis, MN http://charles.robinsontwins.org -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
