thanks for explanations.
have I correctly understood?
If the disk allows to record on 16x but I choose 12x (8x, 6x...) then it will be written in CAV strategy?
If the disk allows to record only on 12x and I choose 12x then it will be written down in Z-CLV strategy?
PS. the question about nec-nd3500, dtk-1616n, iodata-DVR-ABN16W...
and still not so clearly
at record of the same disk (ID: YUDEN000T02) on nd-3500 on 16x and 12x it was used CAV strategy
but at record on 8x Z-CLV strategy http://homepage2.nifty.com/yss/nd3500a/dvd.htm