[robski]

Originally Posted by Don Hoey

Rob,
Again I have heard this was put down to the strength of the anti alaise filter ( not well up on this electronics tech stuff )
Don

This filter is to overcome moire patterning. If a pattern in the subject image is close to the pitch of the sensors pixels it will product a beat pattern. I don't know if you remember the days of news readers on the TV wearing check jackets and ties ? If the camera caught it right it would give a jazzy effect. The technical reason for this was down to the quaility of a notch filter in the TV set. The video frequency produced by the jacket matched that of the sub-carrier radio frequency the colour was modulated to. It amasing the stuff you never forget - LOL