Yes, both Pentax F*250-600/5.6 and FA*250-600/5.6 are f/5.6 across the range and with autofocus. They are both expensive and difficult to get hold of, but I got one probably because of the missing tripod mount.
After receiving it and checking condition, I started out with FreeCAD to make a drawing of the mount. I have never used a CAD program before and struggled a little bit in the beginning. But after three long evenings, it was finished. I sent the drawing file to Shapeways and got a plastic mount two weeks later. The plastic mount is solid enough to test it on a tripod and after some small adjustments on the drawing, I sent the files to a company who will make it of aluminum. I am promised to have this in the week or two. Here are some pictures of it with the plastic mount. http://album.heime.org/Default.aspx?albummode=Folder&albumpath=%2falbum%2fdiverse%2f250-600 -----Original Message----- From: PDML [mailto:[email protected]] On Behalf Of Tim Bray Sent: Tuesday, April 23, 2013 8:04 AM To: Pentax-Discuss Mail List Subject: Re: Soccer Wow, excellent shots. Tell us more... F5.6 across the range? Auto-focus? Quirks? Also, how about a picture of it? -T -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
