On Apr 23, 2013, at 5:19 AM, SV Hovland wrote: > 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 > Ingenious! And designing the base so that you can do without a tripod lens plate is a very nice touch.
stan -- 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.
