Archived posting to the Leica Users Group, 2011/01/02
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Should have read "Pentax bellows". I must proof read more carefully. Jim Nichols Tullahoma, TN USA ----- Original Message ----- From: "Jim Nichols" <jhnichols at lighttube.net> To: "Leica Users Group" <lug at leica-users.org> Sent: Sunday, January 02, 2011 1:22 PM Subject: Re: [Leica] IMG: My Ross Lens Project > Hi Philippe, > > Thanks for the kind words. I had an old Exacta bellows, but Exacta > adapters are very expensive. I bought the Pentax adapter on the auction > site and used a "donor" lens to provide the M42 flange, so I put the whole > thing together rather cheaply. > > Jim Nichols > Tullahoma, TN USA > ----- Original Message ----- > From: "philippe.amard" <philippe.amard at sfr.fr> > To: "Leica Users Group" <lug at leica-users.org> > Sent: Sunday, January 02, 2011 1:14 PM > Subject: Re: [Leica] IMG: My Ross Lens Project > > >> G?nial ! >> >> And you're only telling this to me when I just sold my bellows .... >> >> Vick, where are you? >> >> Great job Jim. >> Really. >> >> Bien amicalement >> Philippe >> >> Le 2 janv. 11 ? 19:13, Jim Nichols a ?crit : >> >>> >>> For about fifty years, I have had a few old lenses stashed away, mostly >>> forgotten. The best of these is a Ross London No. 6 Symmetrical lens, >>> which was manufactured around 1890, according to the SN. It has an >>> 8-inch focal length and rotary Waterhouse stops equivalent to f/16 >>> through f/64. These were manufactured in various focal lengths over a >>> period of years to use on the wet plate and dry plate cameras also >>> manufactured by Ross. >>> >>> The lens and flange are shown in this image: >>> http://gallery.leica-users.org/v/OldNick/Ross+Lens+2.jpg.html >>> >>> I decided to see what this lens could produce. I fabricated a >>> spacer/adapter, which has the Ross flange on the front, and an M42 >>> flange on the back, to mount on a Honeywell Pentax bellows. >>> http://gallery.leica-users.org/v/OldNick/Lens+Flange+to+M42+Adapter.jpg.html >>> >>> The lens and adapter were mounted on the bellows, as shown here. >>> http://gallery.leica-users.org/v/OldNick/Lens+Adapted+to+Bellows.jpg.html >>> >>> The bellows assembly was mounted on my Olympus E-1 using an M42 >>> adapter. >>> http://gallery.leica-users.org/v/OldNick/Final+Assembly.jpg.html >>> >>> All of these photos were made with a Leica Elmarit-R 60mm Macro on my >>> E-510. >>> >>> I tried a few hand-held photos this morning, when it is 32 deg F. and >>> ice on the water, with a strong breeze. Most were unsteady, because of >>> the cold. The best example is shown below, showing battle flags at a >>> local Confederate Cemetery. This was made at ISO 200, 1/400 at f/16, >>> RAW, converted to B&W using a PhotoPlugins converter. >>> http://gallery.leica-users.org/v/OldNick/Flags+BW.jpg.html >>> >>> The bellows and spacer allow focusing from 15 feet to infinity. My >>> next effort will be to get a set of M42 extension tubes to achieve >>> closer focus. >>> >>> Comments and critiques welcomed. >>> >>> Jim Nichols >>> Tullahoma, TN USA >>> >>> _______________________________________________ >>> Leica Users Group. >>> See http://leica-users.org/mailman/listinfo/lug for more information >>> >> NO ARCHIVE >> >> >> >> _______________________________________________ >> Leica Users Group. >> See http://leica-users.org/mailman/listinfo/lug for more information >> >> > > > > _______________________________________________ > Leica Users Group. > See http://leica-users.org/mailman/listinfo/lug for more information > >