Another local Hoffman! COLOR!

[old_tv_nut]

Originally Posted by old_tv_nut

This philosophy might be followed by an engineer, but you can bet that the average owner would want that expensive color set to show even noisy color if it was available.

Of course, if the color AFC section was crappy and couldn't maintain lock under noisy conditions, that would certainly make you want to turn it off.

[Yamamaya42]

I had never seen an adjustment like that before in a vintage TV, they must be rare, I have seen things like “color temperature settings” in LCD types, but in all the years since HS till now, this is the first time I have seen one in a tube type tv. :O

[old_tv_nut]

Originally Posted by Yamamaya42

I had never seen an adjustment like that before in a vintage TV, they must be rare, I have seen things like “color temperature settings” in LCD types, but in all the years since HS till now, this is the first time I have seen one in a tube type tv. :O

The color temp setting in an LCD should not affect the tracking (that is, making shadow color different from highlight color) - it shouild be more like the drive settings in a CRT.

Note that with the excellent tracking stability of modern digital video hardware, deliberate separately controlled mistracking of highlights, midtones, and shadows is used in cinema and now even in Photoshop still image processing, where it is termed "color grading." It can be effective for setting a visual mood, but can also lead to fads like the strong orange-cyan look of some movies.

[Yamamaya42]

Originally Posted by old_tv_nut

The color temp setting in an LCD should not affect the tracking (that is, making shadow color different from highlight color) - it shouild be more like the drive settings in a CRT.

Note that with the excellent tracking stability of modern digital video hardware, deliberate separately controlled mistracking of highlights, midtones, and shadows is used in cinema and now even in Photoshop still image processing, where it is termed "color grading." It can be effective for setting a visual mood, but can also lead to fads like the strong orange-cyan look of some movies.

So this basically allows the watcher to alter the balance points of the color demodulation G/B on the fly to adjust to the viewer's tastes? Fancy!

[old_tv_nut]

Originally Posted by Yamamaya42

So this basically allows the watcher to alter the balance points of the color demodulation G/B on the fly to adjust to the viewer's tastes? Fancy!

Or as an old Zenith engineer once said when shown the first RCA experimental color TVs, "27 controls, each one making it worse!"

[dtvmcdonald]

Originally Posted by old_tv_nut

Or as an old Zenith engineer once said when shown the first RCA experimental color TVs, "27 controls, each one making it worse!"

There are 82 adjustments on a CT-100. This includes only one channel strip. It includes the six position and tilt adjustments of the yoke, which are
all very criticasl for perfect convergence.

I adjusted every one on my TV, and they all DID make it better! (except the RF on the strips, which were OK.).

In fact I added an 83rd one, one additional adjustment in the color matrix ..
and that really did get it better, even after changing all the fixed resistors to 1% ones.