To YOU it looks "choppy and stuttery". This is because "persistence of vision", what makes motion picture work, can be perceived differently by different individuals. It's not anybody's fault, but more than a few people can perceive the "flicker" effect of some of the slower frame rates. I've even seen some comments in these forums from individuals who don't like to work in 24fps because of this, and most of the women in my family used to be subject to headaches after coming out of a movie until modern equipment began projecting each frame twice to smooth this effect out.
The motion picture film is still exposed at 24fps but what we're seeing is now 48fps in the theatre, motion blur is still the same, all we're missing is the "flicker".
Some people can see this flicker at 24fps, I'm one of the many who cannot see it. But I used to work with 8mm film and at the frame rate of 18fps I remember seeing a definite flicker effect.
So I work largely in 29.97 progressive because I don't want that small percentage who see 24fps "flicker" to perceive my work as "choppy and stuttery". So far I've seen no comments of such.
See my comments above. It's neither the camera nor the operator. Some people are just more susceptible to seeing (or almost seeing) the flicker effect of the slower frame rate. My wife has always been sensitive to headache from watching a movie in the theatre for a couple of hours, one of the neurologists she's seen had seen medical papers covering the effects of motion picture projection. She cannot quite "see" the flickering but is affected by it nonetheless. In recent years because modern projection equipment "smoothes it out" by projecting each frame twice she seems to be much less affected.
24fps is no longer needed like it used to be. It's an "archaic" holdover from the film days when the rate at which film was "consumed" was a very important economic consideration (price film and processing costs nowadays!). Many in the industry are looking forward to video being done at 60p as a norm someday, and not for slow motion.
I often render my video out at 1280x720 60p (one of the render settings offered in my NLE) for the "smoothing" effect of the faster viewed frame rate.
Some really good points here. One of the things I'd also add is that the folks who spent some years behind an SLR (be it film or digital) were the ones who had the easiest time adapting to the video DSLR.
I really don't have a "dog in this hunt". I don't care what gear they use on their film. Each one of us will use the gear we feel the most comfortable with or what our budget allows and that's the way it ought to be.
Bruce Foreman



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