dennersten Posted August 6, 2012 Share #1 Posted August 6, 2012 Advertisement (gone after registration) Leitz Leica Summar 42mm (Luminar/Photar) | eBay Link to post Share on other sites More sharing options...
Advertisement Posted August 6, 2012 Posted August 6, 2012 Hi dennersten, Take a look here Hey guys what is this?. I'm sure you'll find what you were looking for!
greyelm Posted August 6, 2012 Share #2 Posted August 6, 2012 Looks like an enlarger lens to me. Link to post Share on other sites More sharing options...
jc_braconi Posted August 6, 2012 Share #3 Posted August 6, 2012 There were build for reproduction/macro devices they exist in different focal lenghts. Link to post Share on other sites More sharing options...
jaapv Posted August 6, 2012 Share #4 Posted August 6, 2012 There is a bellows adapter that takes Photars afaik. Link to post Share on other sites More sharing options...
Michael Hiles Posted August 6, 2012 Share #5 Posted August 6, 2012 Is the thread a standard Leica screw size? Link to post Share on other sites More sharing options...
pico Posted August 6, 2012 Share #6 Posted August 6, 2012 Briefly, you probably will find no use for that lens on your Leica unless you use a reflex finder or special copy stand. And there are a couple different thread sizes. The numbers on the lens are not F-Stops, but exposure factors. It's a hassle. We use various focal lengths of those lenses for high precision macro work on medium format view and large format view cameras. They are particularly popular on Linhof cameras. The lens board is conical, usually with a shutter at the end of the cone, and the lens screws into it. A shutter is not always necessary because a lot of light is required, thus often it is adequate to use an electronic flash. Set up, put cover over lens, load film, dim lights, flash. More than you wanted to know? Link to post Share on other sites More sharing options...
jaapv Posted August 6, 2012 Share #7 Posted August 6, 2012 Advertisement (gone after registration) Is the thread a standard Leica screw size? Afraid not. Link to post Share on other sites More sharing options...
tdavis Posted August 7, 2012 Share #8 Posted August 7, 2012 SUMMAR Link to post Share on other sites More sharing options...
luigi bertolotti Posted August 9, 2012 Share #9 Posted August 9, 2012 An interesting historical note is that Summars for Microphotography did exist BEFORE the introduction of Leica... and one of the pre-WWI prototypes of the 35mm Leitz Camera (not yet named "LEICA") mounted a 42mm Summar lens. Link to post Share on other sites More sharing options...
01af Posted August 10, 2012 Share #10 Posted August 10, 2012 ... and one of the pre-WW-I prototypes of the 35-mm Leitz Camera (not yet named "LEICA") mounted a 42 mm Summar lens. Yes—but it was the poor performance of this Summar that forced Max Berek to sit down and design an entirely new lens for Barnack's camera ... which became the Anastigmat 5 cm 1:3.5 (5 elements, 3 groups), later renamed Elmax, still later redesigned, using improved glass types, to the well-known four-element Elmar 5 cm 1:3.5. Link to post Share on other sites More sharing options...
dkCambridgeshire Posted August 12, 2012 Share #11 Posted August 12, 2012 Summar 42mm, 8cm f4.5 and 12cm f4.5 lenses; the 8cm is screwed into its dedicated '80' adaptor ring; the 42mm which has an RMS male thread is screwed into the 24/35/42u/50 adaptor ring; the 12cm is screwed into a 120.150 adaptor ring ... each adaptor ring has the same size male thread which screws into the illustrated 500 935 Leica R adaptor ... which is incorrectly referred to as an 'extension tube' on page 303 of the Leica Collectors Guide 1st Edition. By means of the 500 935 adaptor, the Summar lenses can be used on a Leica R bellows or R extension rings The Ebay offering is probably overpriced ... my set of three lenses were just under £300 complete with adaptors from Ffordes Took ages to source the 500 935 adaptor which was incorrectly listed as a Photar adaptor by DAG . Most Photar lenses have an RMS thread and they are used with the Photar Adapter R 14259. This is the 'regular' Photar Adapter R with the RMS centre thread and rear R bayonet Photar adapters sell for silly high ££ $$ €€ compared to what they commanded a few years ago. Best wishes dunk Link to post Share on other sites More sharing options...
dennersten Posted August 14, 2012 Author Share #12 Posted August 14, 2012 Thanks everybody! Very interesting. Link to post Share on other sites More sharing options...
duckrider Posted August 14, 2012 Share #13 Posted August 14, 2012 have a look to the Aristophot: http://www.l-camera-forum.com/leica-wiki.de/index.php/Leitz_Aristophot These lenses where usually for Mavrophotography with this equipment. The Macrolens Collection Database 300$ is too much imo. Kind regards Thomas Link to post Share on other sites More sharing options...
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