Just acquired a Nikon PB-6 Bellows with a PK-11A ring. Some quite cool stuff I think :) (see:
http://www.ebay.nl/itm/151237248860?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649)
However, as I only have AF-S G lenses, there might be the problem that I cannot control aperture very well. The PB-6 has an aperture lever, that you can lock, the upper levers on the front, that you can see on the pictures in the auction. I guess this means, I can still somehow control my aperture, but this will mean that the control will be somewhere between fully opening (for focussing) and fully closing the aperture (for taking the actual picture).
As the magnification will be quite a lot, I am wondering if this would be a problem. Or if I actually just have to get a lens with an aperture ring. I suppose, the aperture ring defines how far the aperture will be closed when taking the actual picture. Still, I see that there a quite some people who use reverse lenses and the BR-6A aperture control ring on a G-lens (so, aperture control is not really more than you will have with using a non-reversed G-lens on the bellows as is).
What do you guys think?