In relation to the recent development of ultra high definition imaging technique (4K)
that have quadruple amount of pixels relative to high definition imaging (HD), it has
been reported that observer’s subjective impression differ between these imaging. The
present study examined how differences in resolution (4K and HD imaging) influence
subjective impressions of movies in association with movie contents (natural/artificial
objects) and fields of view (wide/medium/narrow) (Exp1). We also investigated the
effects of the quantities of motion on subjective impressions of movies in different im-
ge resolutions with the flame rate higher (59.94 fps) than the previous study (23.98
fps) (Exp2). We found that 4K movies, as compared to HD movies, induced stronger
impressions regarding evaluation and comfort especially when they were presented with
natural scene and/or larger field of view. It was also shown that 4K movies with higher
flame rate induced stronger impressions regarding desirability and comfort regardless
of motion quantities, contrary to the previous finding that 4K movies with the larger
quantities of motion gave observer lower impression regarding desirability and comfort
than HD movies. These results demonstrate that the differences in image resolution
could modulate subjective impressions of movies in accordance with the differences in
movie contents, fields of view, and flame rate. Moreover, the current findings suggest
that there exist some desirable conditions under which the ultra high definition imaging
could effectively enhance observers’ subjective impressions of movies.
