Phil Brammer
3-Feb-2002, 20:01
Hello
I have built a 6x17 camera and and would like to know how one would determine th e lens to film plane distance for a hyperfocal setting for a particular lens for a couple of apetures, say f 16 and f 32. The lens is a Super angulon 90 F8. I w as planning on having three settings for the lens, one focussed on infinity (the lens is used here most of the time), one hyperfocal at f 16 and one hyperfocal at f 32 (i need to start including some foreground interest in my photos, thus t his requirement). Do you find the hyperfocal distance through trial and error by taking photos at various distanced subjects, focus settings and apetures, or is there some sort of mathematical way i can determine it. My usual way of focussi ng is ground glass viewing. Currently there are no focus setting marks on the ca mera i have built (but i realize i will have to do so if i want to change the fo cussing)
I have built a 6x17 camera and and would like to know how one would determine th e lens to film plane distance for a hyperfocal setting for a particular lens for a couple of apetures, say f 16 and f 32. The lens is a Super angulon 90 F8. I w as planning on having three settings for the lens, one focussed on infinity (the lens is used here most of the time), one hyperfocal at f 16 and one hyperfocal at f 32 (i need to start including some foreground interest in my photos, thus t his requirement). Do you find the hyperfocal distance through trial and error by taking photos at various distanced subjects, focus settings and apetures, or is there some sort of mathematical way i can determine it. My usual way of focussi ng is ground glass viewing. Currently there are no focus setting marks on the ca mera i have built (but i realize i will have to do so if i want to change the fo cussing)