[Tomcomm]

I've finally got the dynamic convergence acceptable, not perfect. Best advice..... "Know When to Quit" or you'll drive yourself nuts!

The CTC2B's original 21AX22 had the first magnetic convergence and was straight foreword but highly cross-coupled. No control was completely independent.The very next RCA, the CTC4 ,was simplified and designed for quick setup. All remaining RCA's continued refining the dynamic convergence and presumably improved its performance??

Once I had better convergence I noticed a major improvement in the fine detail inthe screen pictures, as expected. I then went back to making digital camera screen-captures as close to the real thing as possible. The CTC2B using the 21FBP22A was capable of greater brightness dynamic range then the Canon S-40 4mpix! Even going fully manual shutter speed and aperture settings with ISO 400, I couldn't capture the dark areas on the screen without driving the brighter areas into saturation.

The Canon's native resolution is 2272 X 1704. My CRT computer monitor max is 1280 X 1024 but I use 1024 X 768 for all my photo editing and display. This mismatch, in addition to the TV's CRT pitch makes for hideous moiré on lmost all captures. I started to mess with my Ulead PhotoImpact editor to reduce the 2272 X 1704 Canon shots to exact multiples of the monitor's 1024 X 768 resolution. At 1:1, suggested by "old tv nut", the moiré was greatly reduced but replaced with a uniform artifact that gave a grainy affect to large areas of saturated color. I then went to 2:1 or 2048 X 1536 resolution which was much closer to the Canon's native. The residual moiré was no worse then the 1:1 and the artifact remained, but was much finer and not nearly as noticeable. Since the edited picture had twice the resolution of the monitor, the displayed fine picture detail was obviously better than the 1024 X 768. Needless to say, work will remain in progress in this picture quality area.