Quote:
|
Originally Posted by old_tv_nut
My last encounter with 50 Hz pictures was on a hotel set, and I found that I saw flicker mainly in large white areas. The strangest thing about the program was that it was a rerun of Startrek, which of course I had seen previously in NTSC, and the speedup of the film from 24 fps to 25 fps gave Captain Kirk's intro "...to Bravely go where no man has gone before." a distinct adolescent squeek.
|
He he he - yep, I first noticed the 24-25 fps speedup when I'd taped "Weird science" off the telly (1991-ish?). The bit when Gareth and Wyatt get slushied at the mall has "Tesla girls" by OMD faintly audible in the background. I'd just got "The best of OMD" on CD (having only had a CDP for about 3 months) and I instantly noticed the 4% pitch increase - and figured it was an error. I didn't find out until a couple of years later that film ran at 24fps (non-interlaced).
I can see flicker in the cinema fairly easily on some films...
BTW - it's more sharp outlines (like chrome trim on cars, etc) that show up flicker to me solid white bands aren't so bad, but large areas of red and green, even on RGB from a DVD, flicker like a mare to my eyes!
The best tricks when you have nystagmus though are these:
Red and blue (e.g. pyjamas, a painting, etc) in bright light (natural or incandescent) - the blue flickers REALLY badly!
Red LED displays (such as 1980s clock radios) - in a dark room with very low ambient light (e.g. moonlight through curtains), the LED numbers will float around the room while the background stays put.
The only thing I can think of is that nystagmus is more active on colours than b&w (maybe something to do with the different ways the eye detects chroma over luma) - very weird indeed!
Anyone who says "I'm blind without my glasses" or whatnot usually gets an automatic "whatever" out of me
