Is VE always correct?

[Guest]

Archived from groups: alt.video.laserdisc (More info?)

I've done the color adjustment on the Video Essentials disc, yet it
makes the cocors appear tooo saturated. I know that some calibrations
take some time getting used to, but this calibration makes everything
red and yellow look radioactive and glow off the screen. I've
suspected two reasons:

1. Either because my t.v. is 19 years old and only has an RF/cable
input; or

2. The blue film used to make the color adjustment has faded from its
original color, throwing me off when I peer at the SMPTE bars...

I reduce the color saturation down to where the reds are tolerable,
but I always thought that adjusting by 'eye' sort of defeats the
purpose of using a calibration disc, which is supposed to make it
perfect. Any comments/suggestions?

 

[Guest]

Archived from groups: alt.video.laserdisc (More info?)

On 11 Sep 2004 19:13:34 -0700, memnon2@ziplip.com (Chris W.) wrote:

>I've done the color adjustment on the Video Essentials disc, yet it
>makes the cocors appear tooo saturated. I know that some calibrations
>take some time getting used to, but this calibration makes everything
>red and yellow look radioactive and glow off the screen. I've
>suspected two reasons:
>
>1. Either because my t.v. is 19 years old and only has an RF/cable
>input; or
>
>2. The blue film used to make the color adjustment has faded from its
>original color, throwing me off when I peer at the SMPTE bars...
>
>I reduce the color saturation down to where the reds are tolerable,
>but I always thought that adjusting by 'eye' sort of defeats the
>purpose of using a calibration disc, which is supposed to make it
>perfect. Any comments/suggestions?


The set probably has an NTSC matrix, which indeed does boost the red
drive to compensate for the weaker orange-shifted red phosphors
actually used in a consumer picture tube. The matrix mixes in some of
the green and blue drive. If you used a red or green filter you would
see that these are off (It should be the same brightness of the two
groups of red bars, the four left-hand green bars should be the same.)
Sony and Toshiba are the brands that mostly use a compensating matrix,
JVC and NEC rarely do. Electrohome and Mitsubishi have a different
approach to phoshor compensation. If the set is 19 years old then the
worst offender of that period was the Sony XBR, - you should have
said what brand it is.


... Steve .

 

[Guest]

Archived from groups: alt.video.laserdisc (More info?)

It's a Magnavox floor-model set, manuf. date Feb 1985, lol. It
probably has a prehistoric Y/C filter, because when I play the Snell &
Wilcox 'zone plate' pattern, the bouncing moire is *heavily* distorted
with zig-zagging lines.

 

[Guest]

Archived from groups: alt.video.laserdisc (More info?)

"Chris W." <memnon2@ziplip.com> wrote in message
news:9fecf0b.0409111813.519886bf@posting.google.com...
> I've done the color adjustment on the Video Essentials disc, yet it
> makes the cocors appear tooo saturated. I know that some calibrations
> take some time getting used to, but this calibration makes everything
> red and yellow look radioactive and glow off the screen. I've
> suspected two reasons:

CRT based displays do frequently have what is called "red push". Sounds
like that's the case here. Calibrate by the color bars, and then step
forward a few frames to the head-shot of the red haired girl. Pull down
the color settings until her flesh tone looks a little more natural.

That's how I usually do it, anyway.