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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