Hi Donna Not to worry. Many pinholers shoot Toy cameras as well. I can tell you the little I know - the 151 was the original and shoots a somewhat smaller image than the F. I am not sure about the 162. Prices have gone way up on mint condition Dianas, driven by competition between photographers and collectors for those few. The Diana was put out under many different names by the Great Wall Plastics, and these "clones" have been cheaper but also are increasing in price. Here are some links: <A HREF="http://members.aol.com/hpargotohp/diana.html">Diana Camera Types</A> <A HREF="http://www.sirius.com/~alc/site_html/frameset.html">The Camera Museum (Toy)</A>
The Toy Camera Web Ring would also be a good source of information. <A HREF="http://www.webring.org/cgi-bin/webring?ring=toycamring&list">Toy Camera Ring</A> Happy Trails, Kurt Norlin