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  #166  
Old 04-15-2018, 05:33 PM
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  #167  
Old 04-15-2018, 05:37 PM
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I buried it in the text.

https://visions4netjournal.com/2018/...-carousel-4803
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  #168  
Old 04-15-2018, 05:54 PM
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Thanks! Beautiful!

One comment: looking at full resolution (to make sure it's not phosphor dot / camera moire), I think I see faint chroma dots on plain areas; for exampe, look at the red hourglass scene. Maybe a little tweak to the chroma trap while viewing color bars (L30 on SAMS) could eliminate it entirely? (Of course, there will be crawling dots on edges, no way to get rid of those.)
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  #169  
Old 04-15-2018, 06:43 PM
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Thanks. I did not know what chroma dots were, so looked it up. They look like a virus under a microscope. Went back to the hour glass scene and I think I see what your seeing. Well organized dark dots that maybe don’t belong there.

One thing I noticed with this new camera. There is a ton of moire in the LCD screen prior to the shot. I can watch the image being processed for a few seconds and the camera moire is almost entirely eliminated. I’m happy about that! Some moire still shows up but nothing like the live image in the LCD screen.

Are you going to the ETF this year? I’m not going, but perhaps we could meet up? I presume you use Sky Harbor? I’m in Sun City West.
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  #170  
Old 04-15-2018, 06:54 PM
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...Are you going to the ETF this year? I’m not going, but perhaps we could meet up? I presume you use Sky Harbor? I’m in Sun City West.
Definitely headed to ETF. Flying out of Tucson, using the last of my frequent flyer miles from the business travel I used to do. No options to make a detour through Phoenix this time.

Definitely would like to meet up some time; I think swapping visits would be great if you want.
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  #171  
Old 04-15-2018, 07:56 PM
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I forgot about Tucson, much closer.

I’d like to do that, meet up. If I come out your way, probably fly to Tucson.

I can’t stand flying long distances unless in first class. The seating is so tight in coach and I feel doubled up and get pains in my chest. Thats why no trips to Ohio.
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  #172  
Old 04-15-2018, 09:41 PM
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We did not spot this flaw in the 21AXP22 phosper screen until today. It appears to be a break down of the material between the pixels. The first two photos are with the Sony A6300. The third is by the Apple iPad Pro 2, 10.5. It looks like a total of five pixels are contaminated. The Apple barely resolves it.

The lens on my Sony is a medium class lens. Since it’s an interchangeable lens camera, a good macro lens would resolve the pixels razor sharp. Still the lens I have, did a nice job in resolving the pixels at 3 feet.





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  #173  
Old 04-15-2018, 10:00 PM
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Either a manufacturing defect or a result of shock. I have a few on my 5 and regent's 21ax's. It's rather difficult to have 1.1 million perfect phosphor dots. There are bound to be errors.
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  #174  
Old 04-15-2018, 10:53 PM
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On color CRTs I've seen that at least 5 times by now...At least that is small and it does not appear to have completely ruined any single phosphor dot. I have one half the size of a pea and, one where a single color dot is dead and one where a single color dot is the wrong color (was it R gee bee or R bee gee ). The bigger the more noticeable. The other two cases are also bad as on solid colors that show primary purity they stick out like a sore thumb.

Sometimes it is a manufacturing defect, one other possibility (though I've only seen it on B&W sets) is there was no gun suppression on power off...That bright dot in the center* after each power off cycle can burn the phosphor off (color sets usually bothered to suppress it).
*Centering and other factors can move it off center a bit.

Another possibility on some tubes is leaving the tube open too long in the rebuilding cycle and allowing rust to grow in the shadowmask blocking one or more holes.
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  #175  
Old 04-16-2018, 05:11 PM
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It looks like a hole opening up. If I could get a macro on it, we’d see more. I will keep my eyes on it to see if it changes in appearance.
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Last edited by etype2; 04-16-2018 at 05:17 PM.
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  #176  
Old 04-16-2018, 07:37 PM
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It looks like a hole opening up. If I could get a macro on it, we’d see more. I will keep my eyes on it to see if it changes in appearance.
A hole opening up in what?

Unless that is the point the beams light up for a moment after power down it should never change*.
*Unless there is some abrasive debris between the phosphor and shadow mask and you set the tube face down and shake it.
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  #177  
Old 04-16-2018, 07:46 PM
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Likely its been there the whole time and you are just now noticing it. Phosphor just doesnt fall off the screen. The conditions inside the tube have been the same for over 60 years. The only real way it will get bigger is if the tube is under heavy vibration or shock.

It's nothing to worry about.
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  #178  
Old 04-16-2018, 07:52 PM
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Likely its been there the whole time and you are just now noticing it. Phosphor just doesnt fall off the screen. The conditions inside the tube have been the same for over 60 years. The only real way it will get bigger is if the tube is under heavy vibration or shock.

It's nothing to worry about.
I believe your right.
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  #179  
Old 04-16-2018, 07:54 PM
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A hole opening up in what?

Unless that is the point the beams light up for a moment after power down it should never change*.
*Unless there is some abrasive debris between the phosphor and shadow mask and you set the tube face down and shake it.
Like a new tile job with pinholes of collapsed grout. Likely been there, just never noticed it.
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  #180  
Old 04-30-2018, 08:24 PM
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Gentlemen Prefer Blondes on a RCA 21CT55 and 21AXP22 after an adjustment to a transformer in the chroma circuit, a full calibration and set up and photographed April 30, 2018 with a Sony A6300 with ASP-C sensor.

This sample and 18 other screenshots can be viewed in full resolution 6000X4000 here: https://visions4netjournal.com/2018/...-carousel-4877










The last update will be a request to post “Kiss Me Kate” screenshots in a few weeks from now.
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Last edited by etype2; 05-02-2018 at 01:57 PM.
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