Quote:
Originally Posted by Penthode
Further digressing, with good DC restoration I feel I now have a better understanding why later monochrome sets had little or no DC restoration. With blacks firmly clamped, if the CRT limited beam current and/or high voltage supply is not up to reproducing high average picture luminance, picture blooming results.
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I think it actually is something else. One: cheapness. Two: customer complaints about dark pictures.
Look carefully at both the CT-100 DC restorer circuit and the results on screen.
It does not do full DC restoration .. by intent! Its, if I remember rightly,
somewhere between 75 and 85%. This produces a bit extra brightness on
dark scenes, which the customers actually liked better. In fact, **I** still like it better, even in my dark room.
Of course, back in the day at least for live TV ... there were no dark pictures! Producers made sure that their shows didn't have any, and TV stations avoided black screens like the plaque. I supposed telecined movies did get dark scenes through though.