I decided to spring for a cheap adapter from ebay, so I could use my pentax lenses with the Nikon 1 system. As I thought, its not possible to use the DA lenses, only those which can be fully manual, with aperture rings. I did some test shots in the study and found that my K55 f/1.8 and the dead cheap HOrusbennu 50mm f/1.7 work fine with it, but the K55 is a large lens and its difficult to hold steady on the small body. The Horusbennu is a little better, because its near pancake sized (about the same size as the FA43, but weighs a lot more). I even played with and adapter + adapter and plonked the old Rokkor-PG 50mm f/1.4, and Formula5 200mm f/3.5 on it, but the weight is far too much, and even if a tripod was used, would likely be too much weight for the little camera. So, tomorrow, I'll probably shoot some samples in the yard and post here. I can't see myself using it for long, but... maybe with the Horusbennu.