Nope, no loss of quality, no generational losses, no added noise. The joy of digital file cloning is yours. DV is DV is DV. Once shot, the quality is locked during file transfers, though you could lose quality is in editing, where the compressed video is expanded to baseband video, transitions, filters, character generated text, titles can be added, then the video is re-compressed to DV codec. Since the format relies on averaging and interpolation, it is possible for the digital values of individual pixels to change after being manipulated during editing.
I have an older Canon Optura that works well for occasional use in capture during editing. If you do a lot of field work, the Sony GVD-1000 and little brother, both with and w/o LCD are very useful tools. We had a pro-edit department that ran these decks for over a year with no problems, before we bought DVCPro50 edit decks.
cheers
Paul Izbicki
President
Tenn. Independent Production and
Talent Org. East (TiPTOE)