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#1
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If I was watching PAL, I'd modify the decoder for PAL-S (the way Telefunken originally intended it) that way you would get back the vert chroma resolution the delay line robs you of!
A color system should really not give the public a 'Tint' control because its set up really requires a test signal. Even my 1954 GE hides the "Hue"(Tint) on the back panel (not sure if that was a good idea back then) but my mid 60s RCA has it on the front panel with no "correct-setting"detent (as all-tube chassis not stable enough for this?). |
#2
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Quote:
It is worth noting that differences in color vision among viewers with normal color discrimination can account for up to a +/- 20% difference in the ratio of red and green to get a yellow and therefore a corresponding difference in flesh tone matching. This probably should be corrected by an adjustment to white balance for each viewer, but has never been contemplated because: 1) you can't do this for different simultaneous viewers; and 2) you would never be able to teach non-technical viewers how to make this adjustment. Even with the white adaptation that occurs in all viewers, they will still see differences in flesh tones, and a hue control lets at least one person in the room compensate the rendition for his/her vision. See: A study of the need for color controls on color TV receivers in a color TV system operating perfectly, Hirsch, Charles J. ; Radio Corporation of America, Princeton, N. J., Broadcast and Television Receivers, IEEE Transactions on (Volume:BTR-10 , Issue: 3), Nov. 1964, Page(s): 71 - 86 |
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