Seeing normal motion blur at normal speed only depends on HOW you get that normal speed.
In this case, normal speed is obtained by speeding up footage by a 40:1 ratio (1000/25). So if you only pick one frame every 40 frames, you'll have that "strobe" or "shutter" effect, since every frame has been captured at only 1/1000s.
But for artistic choice, as well as realism concern, a much better solution than picking 1 frame every 40, is to frame blend your footage when speeding up. This way, every frame is used, and 40 of them are blended into a new resulting one. This way, you simulate very closely the motion blur you'd have if shot at normal speed.

Is that clear ? (I'm not sure I am…)

Thanks mate, that was clear.

So it's just plain old frame interpolation?

Or maybe something more complex, like motion compensation and bla blah?

There is no frame interpolation. Why do you think there is ? All I did was to blend frames together to have a nice speedup, with no strobe effect...

I didn't think that, I was just asking.

Motion blur is believable.

It is! Thanx for your appreciation!

The camera brand is Photron, but the whole system is from I-movix, and was at shooting time quite a proto. You can check actual model on I-movix website : i-movix.com

Yes please! :)

My mail is gr8motive@hotmail.com

Thx!!!

Very very much :/

The thing is it's not only a camera, it's a system with a camera, a remote controller unit, a server that's fed by camera and which streams a real time HD-SDI video signal output...

It's clearly build for professionnal use, in a realtime environment, like sport live action, and meant to be included into a bigger setup with many standard cams, video switcher, VCRs, etc...

I think the whole system is about 200-250k$...but price will drop down fast in the future I guess :)

Visit i-movix.com for more information, or you can also talk with the CEO, which is now a vimeo user : vimeo.com/lrenard