Brian, thanks for the quick reply! Solves that one in a hurry. On Sun, 18 Jan 2004 22:17:41 +0900 Brian Chandler <chandler@xxxxxxxxxxxx> writes: > > On Sun, 18 Jan 2004 08:04:09 -0500 > balobo@xxxxxxxx wrote: > > > Can some one tell me where I may find the information to adjust f > stop > > when using subject converter? > > Thanks for your help! > > Bruce Wolff > > http://imaginatorium.org/stuff/tubes.htm > > But actually you could work it out in your head. The same amount of > light is going in; the converter magnifies the image by x2 in both x > and > y directions, so it's 4 times the area; ergo you need 4 times the > exposure, or two stops more. > > Brian Chandler > ---------------- > Jigsaw puzzles from Japan > http://imaginatorium.org/shop/ > imaginatorium@xxxxxxxxxxxxx > > > Bruce Wolff 50 Pleasant St. 3-D Brookline, MA 02446 617-232-8215 balobo@xxxxxxxx; http://www.pbase.com/balobo
