Another dumb question about color-under formats, I think I haven't asked it before:
- why raising "sync tip" of luma frequency without increasing the luma frequency bandwidth? Like, Umatic low band has it at 5.4 MHz, high band at 6.4 MHz, and SP at 6.6 MHz, but the deviation is 1.6 MHz in all three cases. What is the benefit?
- What exactly is improved and why by increasing chroma carrier frequency? I suppose the deviation remains the same? Hi-8 has the highest frequency of all the color-under formats, in fact all numbers are better than Umatic SP.