Archived from groups: rec.photo.digital (
More info?)
Frankie V. Fernandez, MD <fvfernandezmd@hotmail.com> wrote:
: Something like that. I've seen these photographs on magazines or on ESPN
: where they would show a gymnast or figure skater performing a move framed
: several milliseconds at a time. I've tried photoshop and am asking for a
: less expensive software application.
Several suggestions have been made but I will point out one other
consideration, there are multiple ways to produce one of these
images in non digital ways. Some of them use a dark background and a
strobe light while a camera is held open on bulb (or set to a long
exposure). Thus in one image the position of the subject is recorded each
time the stobe flashes. And since the shutter is open the entire time, all
of the images are captured on one frame. This effect could easily be done
in digital (with a camera that can be set to long exposures or bulb). If
the moving object is slow enough, and the location is dark enough that
overexposure isn't a problem, you could even simulate the strobe with a
hand held (and manually triggered) flash. I have even seen great photos
from caves where a single person with a flash managed to light an entire
large cave room with only one flash unit. They wandered around the room
with a manual flash "painting" the room with many many flashes while the
camera's shutter is held open. Some of these last photos have had
"exposures" of half an hour or more!
One other way that previous "strobe" images were captured were with movie
film (and more recently with video) where the images are all captured
individually but are printed (or video displayed) on a single image. With
video, there are specialized effect machines that will capture each image
and hold in the screen for a set time, while the next image is captured
(1/30th of a sec later for NTSC) and also displayed with the first one.
This continues until the first image times out and begins to fade. This
effect would work (with some effort and skill) in photoshop (or similar
"layers" style editing programs) but you need to cut out all but the
primary image from each layer so that the lower layers will show through.
This would be easier if your subject is moving infront of a solid color
background to make "selecting and cutting" the background easier.
Randy
==========
Randy Berbaum
Champaign, IL
/www.joern-thiemann.de/tools/ssmm/index.htm
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