Craig Parkes
11-15-2009, 04:55 PM
Here is something I have been thinking about in terms of the DSMC concept and it's use for extracting both stills and video, simultaneously.
Shoot at a very high frame rate, say 96FPS, but have a Flash that is sync'd to the camera and only set up to go off on say every 8th frame. That way you can get the amazing 'crisp' look of flash photography in your stills, which you extract from every 8th frame (so shooting at 12 FPS, pretty much the equivalent of most current stills and the fastest a photo type flash can go)
You then use only the odd non flash frames (1 and 3, 5 and 7 etc.) to derive your video footage, so that you are getting smooth motion at regular intervals.
This leaves you with a regular 48 FPS video. Now, I am not sure what the decay time is like on the Photographic flashes, so whether they will be visible across more than one frame at that frame rate. If so you still have wiggle room in this case to drop down to regular 24FPS by Just taking Frames 1, 5, 9, 13 etc and triggering the flash on frames 3, 11 etc giving you more time between the flash and the frame you are using.
Does this sound like a technique that could produce interesting, and usable results, or something that's just crazy.
I'm not so much thinking about use for dramatic stuff where you have actors at work (the flash would drive them crazy) but for getting dynamic footage of fashion models, cars, animals in action etc while still achieving that flash photography type effect maybe such a technique could work?
Shoot at a very high frame rate, say 96FPS, but have a Flash that is sync'd to the camera and only set up to go off on say every 8th frame. That way you can get the amazing 'crisp' look of flash photography in your stills, which you extract from every 8th frame (so shooting at 12 FPS, pretty much the equivalent of most current stills and the fastest a photo type flash can go)
You then use only the odd non flash frames (1 and 3, 5 and 7 etc.) to derive your video footage, so that you are getting smooth motion at regular intervals.
This leaves you with a regular 48 FPS video. Now, I am not sure what the decay time is like on the Photographic flashes, so whether they will be visible across more than one frame at that frame rate. If so you still have wiggle room in this case to drop down to regular 24FPS by Just taking Frames 1, 5, 9, 13 etc and triggering the flash on frames 3, 11 etc giving you more time between the flash and the frame you are using.
Does this sound like a technique that could produce interesting, and usable results, or something that's just crazy.
I'm not so much thinking about use for dramatic stuff where you have actors at work (the flash would drive them crazy) but for getting dynamic footage of fashion models, cars, animals in action etc while still achieving that flash photography type effect maybe such a technique could work?