definition of judder:
the term is a sniglet or neologism, a combination of jitter and shudder, and it refers to the quality of 24 frame-per-second film projection to have a shaky, stuttering quality when large objects pan across the screen too quickly [which is anything above a crawl]. it is most noticeable on large projection screens [especially IMAX] but also notable on telecine [movies shown on tv] which introduces a "pulldown" artifact that causes a stutter every 5th frame which makes it look even worse. NTs generally are immune to it [tech reviewer brent butterworth even says he likes it], but i find that i haven't been able to watch a big-screen movie in ages as it gets worse as i have grown older, causing me to get dizzy and nauseous unless i look away.
just in case i am not the only one, there is a solution i've found, and that is to get a tv with a 120-hertz [or faster] refresh rate in combination with anti-judder circuitry, this goes under different names by different manufacturers - S*ny's is called Motion Flow, S*ms*ng's is Movie Plus, Sh*rp's is TrueD, and T*shib*'s is Film Stabilization.
they all work in similar manner, by interpolating extra frames in between the 24 per second of film. most are not without artifacts [subtle ghosting, tearing] but for me the artifacts are much easier on my eyes than the judder ever was.
just wondering. thanx in advance for any replies.