I'm trying to figure out what banding in the blue ramp means.
I have a Lumagen 2143 processor being fed by a Sony player, on to a JVC projector X30 projector. I'm generally happy with the picture quality in real content; I occasionally think I see the odd bit of banding on computer generated graphics title sequences etc.
The S&M ramps all look fine with the Lumagen in circuit with the Lumagen CMS effectively in bypass.
However, the primaries are "out" on the JVC projector, and I'd like to correct this.
The blue from the projector in particular is much "blue-er" than REC709 - so it looks like it needs green adding to it to bring it back.
As soon as you start adding the green to the blue primary via the Lumagen a repeating banding starts to be introduced to the blue ramps.
Is this kind of thing to be expected due to the construction of this ramp?