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Old 11-21-2019, 12:51 PM
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dtvmcdonald dtvmcdonald is offline
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Join Date: Nov 2012
Posts: 1,264
The color level edit: WAS much too high. In actual watching I turn it down.

These pictures were made using a color level set according to
standard color bar patterns. There is a color bar in one, but not with the
"adjacent" bars for setting. I made my own ones of those, and they argre
perfectly with those for the old Digital Video Essentials DVD I also used.
My own set has provision for matching red and green as well as the
blue of the DVE set. Blue and red match perfectly. Green matches as well as
expected from the imperfections in both the green phosphor and the green filter.

Two ideas why it in fact is too saturated: One: there is something wrong
with either the DVD player or the modulator. My OTA digibox also makes
equally too-saturated colors. Two: its the imperfect DC restoration and/or
lack of DC coupling of the I and Q signals. Turning down the color gain has
no effect on the hues.

I did it this way because the last time I posted pictures I got flamed
by doing the matching visually.

Edit: the problem was that I set the color level with the fine tuning set
improperly and did the pictures with it set properly. This increased the
color level.

Last edited by dtvmcdonald; 11-21-2019 at 06:21 PM.
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