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High Speed Camera Questions


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  • Sustaining Member

First, figure out how many seconds (X) it takes for each item to fall though your frame in real-time. Then divide your screen-time of 30 sec / X = F. That is the factor (F) by which you need to slow down the motion. Last, multiply F x your playback rate of 24fps to get your required frame rate.

 

For example, let's say it takes 2 sec for an apple to fall in real-time. 30 sec (screen-time) / 2 sec (real-time) = 15 (F). 24fps (playback rate) x 15 = 360fps. That's getting into Phantom territory for sure.

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  • Sustaining Member

I don't know about that particular Sony camera, but the budget slowmo camera Sony FS700 gets to higher framerates by line skipping and then eventually cropping. So it's really only useable up to 240fps. 480fps is quite soft and aliased, and 960fps is basically unusably soft. The newer cameras may have improved on this, but it's something to be aware of.

 

Here's an FS700 test I shot about four years ago: https://vimeo.com/61947098 (starts @ 1:24).

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  • 2 weeks later...

I've got a Fastex F4 16mm rotating prism camera from the mid 1950's or 60's.

I've never run it...got the camera with a bunch of other stuff I picked up and since it's low speed is 500 frames per second

I didn't think I would ever have to stop a bullet.....I think the top speed is some thing like 3000 frames. (would have to check the manual).

Cables and books are there on how to use it and calculate exposure.

Battery is not with the camera.....runs on something like 40Volts (another thing for me to check)

 

If your interested.....

About 100 lbs to ship.

$400.00 plus packing and shipping (it is in it's own case.....I have some pictures I could send you).

 

Located in Akron Ohio

E-mail RBPerrine@att.net

Edited by Richard Perrine
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