Could you see light moving with a Phantom Camera?

iLLbiLLy

iLLbiLLy

Active member
Unless I F'd up my calculations really bad, with a phantom Camera shooting at 1,000,000 FPS you could slow video down 4.16e4 times(1e7/24fps). The speed of light is 3e8 so in turn you could slow it down to be traveling at a relative 7200 m/s. This is still really fucken fast but if you filmed a light being turned on in a really large room you could see frames where the light filled only parts of the room.
 
you'd need a room > 7.2 km wide, which probably is too wide for a beam of light to cross unless you had a really fucking powerful laser or something
 
yea that what i was thinking at first, but if your final render is 24 fps then it would really only need to be 600 meters((7.2km/24)*2) and you would see light halfway filling the room in the second frame.
 
hmm, maybe thats right. My head is full of fuck looking at all these numbers
 
have fun trying to make out a beam of light at...

Resolution FPS

1280 x 800 7,530

1280 x 720 (720p) 8,360

1024 x 768 9,520

896 x 480 (DVD) 17,000

768 x 576 (PAL) 16,100

768 x 480 (NTSC) 19,300

640 x 480 22,400

512 x 512 25,000

512 x 256 49,500

512 x 128 97,200

384 x 256 60,900

256 x 256 79,000

256 x 128 153,200

256 x 64 288,800

128 x 128 215,600

128 x 64 379,100

128 x 32 685,800

128 x 16 1,077,500*

128 x 8 1,400,000*
 
when you youtube phantom cam there come a few vids, idk if they are indeed 1 million fps, but on some of them thats all the guys in the comment section talk about
 
that's being really conservative. i was on a shoot a few weeks ago with the phantom that red bull recently purchased (i wasn't the one shooting it), and the whole phantom package was about $250,000
 
word, glass especially can get real expensive, real fast. a friend of mine has around $28,000 in a RED. sick as ffff
 
yeah for sure. on a side note, i heard that phantom's are hard as fuck to use. like basic camera function is relatively easy, but you have to take lessons on how to use it because it has all these quirks like if you have it at more than a certain angle to the sun, you'll get a huge black line across your footage, or if you have it tilted to the right too much it won't record, shit like that
 
yeah, the thing is a crazy machine. man i'm just trying to get a 7d haha. doesn't matter if you tilt it sideways haha
 
Yeah, what that guys said above is right. At 1.4 million frames per second the resolution is 128 x 8. So Although you could probably have the difference in light in different frames I doubt you'd be able to see it.
 
is this some optical restriction or simply a question of data transfer (the fact that the restriction goes down as you raise the fps)?
 
Well, time for interesting fact of the day, the speed of light is only constant in a vacuum and according to QI, scientists have managed to slow the speed of light down to 38 mph through some extremely cold substance that I can't remember, so I would say this would easily be possible in some way.
 
Probably due to data transfer and processing power. having to process even only a few pixels 1 million times a second is super cpu intensive
 
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