Quote:
I intentionally leave my CRT slightly defocused to soften my scanlines. |
Clarence,
Intensionally defocusing the CRT is not a good idea to get rid of scanlines. Defocusing will not only close the scanline gap in the vertical direction, but also take out the snap in the picture in the horizontal direction.
A better way to do it, is changing the beam shape with astig to a bit of a vertical elipse. That way you get rid of the scanlines, yet have perfect horizontal focus.
While doing this, one has to be careful that astig and e-focus interact with another, so this has to be done in an iterative way:
1. use astig a bit to get a slightly vertical beam shape
2. adjust for perfect 'horizontal' focus with a test pattern that has high horizontal frequency response (e.g. horizontal burst)
3. judge scanlines structure from seating position
4. if still visible, go back to 1.
Maybe you meant doing it like this, but the way you described it made it sound like you would use optical or EM focus, which by no means the way to do it.
Regards
Bjoern