This footage has been making the rounds the last few years. There's also versions of the same scenes with alternate actors (Lyle Waggoner as Batman and I forget who was Robin). There are some very clean, good-looking versions on the recent "Holy Batmania" DVD.
I'm not so sure they were going for "noirish" and "non-camp" here. The dialog is still campy depending on how you read the lines (and many of them ended up in the pilot episode, "Hey Diddle Riddle" exactly as they're heard here). What makes it "noirish", I guess, is how dark everything is, but I don't see that so much as a matter of establishing mood as it is a reflection of where they were in terms of development and budget when this thing was shot. The "Batcave" is heavily shadowed not, I think , to make it "creepy" but rather to hide just how small the set is (especially compared to the huge version we'd get in the final product). Basically they just rolled in a bunch of computers from the Lost in Space set and probabaly used a "cave" left over from same.
I do dig the pre-"New Look" chest insignia, though. But I'm not so sure about the cowl. Fun to see how it goes on, however, and you'll note that in the actual series we never got this kind of shot of Bruce and Dick in the cave sans masks.
Cool stuff. You can find the alternate screen tests and lots of other goodies over at Scott Sebring's "Batfriend" site:
www.batfriend.com