Christ, yes.
At 25 megabits per second, DV has nominally greater quality than the MPEG-2 at eight (ish) megabits you find on DVD. But they're totally different formats. DVD, just to pick one example, uses 4:2:0 chroma subsampling, while all uncompressed formats are 4:2:2. But NTSC DV is 4:1:1. When you go from uncompressed to DVD you're throwing away half your potential chroma resolution (4:2:2 to 4:2:0), but when you go from DVD to DV you're throwing away half
again (4:2:0 to 4:1:1).
DV is a total piece of @#$%& format, pardon my language. The only reason to works in DV
ever are (a) if your footage originated in DV; you can stay in that format very effectively through your whole workflow, or (b) if you're offlining for a later uncompressed finish.