On 7 September 2011 07:33, Darren Addy <[email protected]> wrote: > This was done over 30 years ago (before green screen) in a lot of > portrait studios with a special screen and projector. The screen was > different from the usual as it was made up of thousands to tiny black > glass balls that would reflect the projected light straight back at > the camera (which had to be perfectly aligned with the projector and > the perfectly perpendicular screen. The camera actually shot through a > beam-splitter and the projector (aimed at the ceiling) bounced 90 > degrees off the beam splitter to the screen. > > Scene Machine was one brand: > http://www.ebay.com/itm/Scene-Machine-Virtual-Backgrounds-/260834241515 > > If not perfectly aligned you would get a dark line around at least > part of your subject. The main problem was that the studio lighting > would rarely match the lighting on the background image and so would > look unrealistic to the eye (which is quite good at detecting when > something is not quite right). It shares this problem with green > screen backgrounds of today. > > It was a fad that really didn't last too long (except that I see that > Scene Machine is still in business, so somebody must still be buying). > > Darren Addy > Kearney, Nebraska >
Read my post from 14 hours earlier. regards, Anthony "Of what use is lens and light to those who lack in mind and sight" (Anon) -- 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.
