Hi, On 14 Mar 2002 at 22:35, Paul F. Stregevsky wrote: > Odd as it seems, there's no way to get all of the following, new or used, > in a single Pentax 300/4 or 300/4.5 lens: > - PK mount > - manual focus > - tripod collar
F and FA lenses can be focused manually... ;-) > To my knowledge, the only lens that offers all of these attributes is > Ricoh's XR Rikenon Apochromatic 300/4.5. A photo can be seen at > http://www.butkus.org/chinon/ricoh_slr_systems/ricoh_slr_systems.htm Which is a Sigma design, so probably it exists under the Sigma name too. > Here are the Ricoh's specs: > close focus: 2.5 m (the Pentax 300/4.5s, 2.0 m) The manual Pentaxes are limited to 4m. It's because this Ricoh lens is IF design. > 1050 g (37 oz.)--30 g (about 1.1 oz) more than the Pentax SMC 300/4 PK Not a difference. (3%) BTW, it feels a bit strange because it's long, heavy and "thin" at the same time. > 67 mm filter ring This was a point for me since I didn't want to invest in a set of 77mm filters (I already had 67mm). > The only one I've ever seen for sale is for sale right now (EX condition), > in Canada, at http://www.carsand.com/UsedEquip.shtml for 400 Cdn ($248). The only one I've ever seen for sale is now my favourite tele. It was about 150USD, new in box (a nice black leather box!!!). It seems I was lucky... Gabor - This message is from the Pentax-Discuss Mail List. To unsubscribe, go to http://www.pdml.net and follow the directions. Don't forget to visit the Pentax Users' Gallery at http://pug.komkon.org .
