Wednesday, October 23, 2013

SMPTE Conference: Studying Acceptance of HFR 3D

Wolfgang Ruppel, professor at the Rheinmain University of Applied Sciences in Germany, presented the results of a study that the University conducted about the subjective acceptance of HFRs for stereoscopic 3D.
This was achieved using James Cameron and Lightstorm Entertainment’s “medieval feast” themed test footage comparing 24, 48 and 60 fps; and Circus, an animated short produced at RheinMain University, also rendered in 24, 48, and 60fps.
Ruppel reported that overall results found a preference for HFRs amongst the participants. More specifically, the findings suggest that the difference between 48 fps/eye and 60 fps/eye varied by the speed of motion. And 60fps/eye can make the most noticeable difference for mid to fast motion scenes.
A second test examined down-conversion from 48 fps/eye and 60 fps/eye to 24 fps/eye, compared with footage natively shot with 24 fps/eye.
The conclusion: downconversion appears to work well.
Have you seen these comparisons? What do you think?

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