Film to flange dist for 121 Super Angulongreenspun.com : LUSENET : Large format photography : One Thread
I would like to know what is the distance between the flange and the film for the 121 / 8.0 Super Angulon when focused at 18 feet. Reason for this question ? I'm building Super wide 8x10 camera and I need to know the starting point for placement of my lens board. I will do fine tuning with shims. Thanks.
-- Alois Lazecky (firstname.lastname@example.org), June 18, 2001
-- ruud knulst (email@example.com), June 18, 2001.
Sorry, I overlooked 18 feet. Focal length is 121.6 mm and flange focal distance is 132 mm @ infinity. If 18 feet is 5486 mm then the focal point is at 124.36 mm. So the flange focal distance @ 5486 mm is 124.36 * 132 / 121.6 = 134,99 mm.
-- Ruud Knulst (firstname.lastname@example.org), June 18, 2001.
Thank you Ruud !
Internet is great especially when great and knowledgable people are at the other end.
-- Alois Lazecky (email@example.com), June 18, 2001.