Posted by Bob Stoddard on November 15, 2000 at 11:57:02:
In Reply to: Re: speed-i-o-scope posted by Bob Seith on November 15, 2000 at 11:18:40:: Your reply intrigues me. What is "oscilloscope
: photography"?
It's the taking of a picture of the display on an oscilloscope
screen in order to preserve it for study, use in a publication,
etc. The oscilloscope is a very basic electronic analytical tool
which displays a graph of a time-varying voltage (or any other
parameter which has been converted to a voltage). A good big
dictionary or text on electronics will fill in the details.
The fast 75mm lenses were used very near 1:1 reproduction ratio,
since oscilloscope screens are commonly about 5" in diameter, so
these lenses could cover 3.25 X 4.25 Polaroid or probably even 4 X
5 without difficulty. At infinity, probably 6 X 6 cm. would be
about it. RKS