Scott --
12-Apr-2011, 11:50
Hi, all -
I'm pondering my Darlot Hemispherique Rapide #2, a 9" FL lens, about f/10 or so on its own. It's an RR lens, and so should be convertible (right?). Short of mounting the lens (on a camera for which I haven't made a lensboard, and which doesn't have a bellows), is there a way to calculate the FL and speed of one of the groups alone? I'm curious if this little lens, which will (barely) cover 8x10, will cover 10x12 converted.
Thanks!
Scott
I'm pondering my Darlot Hemispherique Rapide #2, a 9" FL lens, about f/10 or so on its own. It's an RR lens, and so should be convertible (right?). Short of mounting the lens (on a camera for which I haven't made a lensboard, and which doesn't have a bellows), is there a way to calculate the FL and speed of one of the groups alone? I'm curious if this little lens, which will (barely) cover 8x10, will cover 10x12 converted.
Thanks!
Scott