View Full Version : 1200 frames per second for $1000?
05-05-2008, 12:38 PM
I know a bunch of people here might be interested in this. First thing I thought of when I saw this is high speed video of pool balls. I knew it wouldn't be long before this stuff was affordable ...
casio exilim EX-F1 (http://gizmodo.com/383843/casio-exilim-ex+f1-slow+mo-super-cam-full-review-verdict-totally-unique-shockingly-powerful)
05-05-2008, 01:42 PM
So Dr. Dave,
How many frames per seconds does your high speed video shoot in those black and white slo mo videos of yours?
Is this camera a good thing?...anyone know?
05-05-2008, 05:05 PM
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: BigRigTom</div><div class="ubbcode-body">So Dr. Dave,
How many frames per seconds does your high speed video shoot in those black and white slo mo videos of yours?</div></div>All of my camera info can be found here (http://high_speed_video.colostate.edu/camera_description.htm).
My camera is capable of 10,000 fps (at very low resolution), but most of the billiards stuff I shoot is at 1,000 fps (at 256x240).
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: BigRigTom</div><div class="ubbcode-body">Is this camera a good thing?...anyone know? </div></div>I think it is a great deal for the money.
05-05-2008, 05:38 PM
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: dr_dave</div><div class="ubbcode-body"> ... I think it is a great deal for the money.
The review said that it had illumination issues at 1200 FPS which is not surprising. Be prepared to be warm when using this camera. I see that the shutter speed goes down to 1/40,000 second.
05-06-2008, 10:07 AM
Wow, that's quite a capability in a consumer camera - I hope it's popular enough that development continues.
I didn't care for the format of the "full review" on the web site linked, though. They didn't have much in the way of quantitative data, and no spec table.
One of the things I was wondering about was whether the user has any control of shutter speed during the HS video. If the "open shutter" duration is not down to a fraction of the inter-frame timing, you can wind up with a series of blurred frames when photographing fast objects. You really need to be able to reduce the shutter time independently in order to trade off between your subject motion and how many high-intensity lights you can bring to bear.
I wish I could justify buying one of these - it could be tremendous fun.
05-06-2008, 10:27 AM
Here's the company web page, with links to specs and more demo videos: Camera Web Page (http://www.exilim.com/intl/ex_f1/)
No specific data on shutter speeds during video, but if you run the demo videos it looks pretty capable. I think you could actually capture handgun bullets with this one at 1200 FPS.
Chopstick will probably want one of these for his golf swing, especially since it doesn't require an operator. You just set up the camera and it doesn't begin saving until motion is detected.
Video is saved in H.264 format, which should be good for storage compaction, but not the best for editing. They don't list the space required for video files, though, so there's no way to get an idea of how long a standard (640x480 30 FPS) DVD-quality video can be. Max file size is 4 GB, but there's no way to translate this to feature length without the missing info. It would be about 35-45 minutes if the format was motion JPEG, so H.264 should be longer.
Also, it doesn't appear to have optical image stabilization, which is pretty much standard nowadays in long-zoom cameras. Lack of this feature would probably keep me from buying this particular model, because I take a lot of hand-held indoor no-flash pictures at pool tournaments. It does have something they call "CMOS anti-shake", which is probably the equivalent of the electronic IS found on camcorders. Not generally as good, but maybe this one works better.
Still, for the video capability, it's tempting.
05-06-2008, 02:37 PM
just when I was getting ready to buy...I saw this warning:
"It makes sense, of course, but you need to consider it, especially if you're into experimental amateur porn cinematography."
now i have to reconsider....
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