FM2N
Member
Hello All,
I have a Brownie ballbearing lens with the following openings-
US8-near portriat
16-average view
32-distant view
64-marine, clouds, snow
and a mark just past that i believe is 128.
COuld you tell me how to figure out what the equivilent modernf/stops would be?
The focal length at infinity is 7 inches.
I measured as well as I could the openings at each setting and they are as follow
8=14mm
16=12mm
32=10mm
64=8mm
128=6mm
Thanks for your help
Arthur, NYC
I have a Brownie ballbearing lens with the following openings-
US8-near portriat
16-average view
32-distant view
64-marine, clouds, snow
and a mark just past that i believe is 128.
COuld you tell me how to figure out what the equivilent modernf/stops would be?
The focal length at infinity is 7 inches.
I measured as well as I could the openings at each setting and they are as follow
8=14mm
16=12mm
32=10mm
64=8mm
128=6mm
Thanks for your help
Arthur, NYC