01-11-2017, 10:07 AM
(This post was last modified: 01-11-2017, 10:08 AM by Murphyv310.)
Hi Peter.
This tube is odd. If you look at the rear of the screen through a part of the bulb with no internal coating the image is bright blue, there is as well a blue halo all around the edge of the screen, I also think there is a slight amount of ion burning as the centre looks more green with also a very small central ion burn that sometimes is hard to see. I think the focus is a bit astigmatic as well, repositioning of the magnets makes it worse as it seems to be at its best position. The tube of course specifies a focus coil.
To be fair less the lens the picture is pretty good on stills but rubbish on any movement, even setting the focus has to be done in little steps.
I'll do a picture of the afterglow later on.
This tube is odd. If you look at the rear of the screen through a part of the bulb with no internal coating the image is bright blue, there is as well a blue halo all around the edge of the screen, I also think there is a slight amount of ion burning as the centre looks more green with also a very small central ion burn that sometimes is hard to see. I think the focus is a bit astigmatic as well, repositioning of the magnets makes it worse as it seems to be at its best position. The tube of course specifies a focus coil.
To be fair less the lens the picture is pretty good on stills but rubbish on any movement, even setting the focus has to be done in little steps.
I'll do a picture of the afterglow later on.
