Archived posting to the Leica Users Group, 1998/01/17
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]In a message dated 98-01-17 18:54:49 EST, Tom, of Baltimore, wrote: << CHKARNES wrote: > > <If rectangular hoods are more efficient, then so are rectangular lenses. I can't wait to see who's first to come out with a rectangular lens with a built-in cylindrical hood. Perhaps it has already been tried, who knows. > Anamorphic lenses for 35mm motion picture photography have rectangular front glass, and all matte boxes used in motion picture work use rectangular shades...because they are better at cutting out lens flare! Tom Baltimore >> Tom, I didn't write that, I responded to it by saying something like "You guys don't seem to know anything about geometry. Unless GH is kidding." I know that rectangular shades are more efficient because, being an engineer, I know something about geometry. Charlie