uhoh7 Posted September 10, 2015 Share #1 Â Posted September 10, 2015 Advertisement (gone after registration) Well we all know Mandler and Karbe. And I just learned my favorite, the 28 cron, was designed not by Karbe, but Michael Heiden. Â But there are quite a few modern Leica lenses for which no designer is listed in the wikis. Â 135/3.4 APO? SEM 21, 18 and 24? 90 Summarit? Â There are quite few more. Link to post Share on other sites More sharing options...
Advertisement Posted September 10, 2015 Posted September 10, 2015 Hi uhoh7, Take a look here The Designers. I'm sure you'll find what you were looking for!
Exodies Posted September 10, 2015 Share #2 Â Posted September 10, 2015 Surely lens design isn't a one man job. Link to post Share on other sites More sharing options...
uhoh7 Posted September 10, 2015 Author Share #3 Â Posted September 10, 2015 Surely lens design isn't a one man job. I agree, and I'd love to know the back stories in that respect. But usually one person is credited as the designer. It's true with all the old Canon LTMs, where you can look up the whole list and see who did what. Link to post Share on other sites More sharing options...
jaapv Posted September 10, 2015 Share #4  Posted September 10, 2015 Surely lens design isn't a one man job. No, but the head designer does lead the team and works to his/her own ideas. Link to post Share on other sites More sharing options...
jdlaing Posted September 10, 2015 Share #5 Â Posted September 10, 2015 And stop calling me surely. Link to post Share on other sites More sharing options...
uhoh7 Posted September 10, 2015 Author Share #6 Â Posted September 10, 2015 And stop calling me surely. What is your nickname, anyway? Link to post Share on other sites More sharing options...
jdlaing Posted September 10, 2015 Share #7 Â Posted September 10, 2015 Advertisement (gone after registration) What is your nickname, anyway? Bone Crusher Link to post Share on other sites More sharing options...
Exodies Posted September 10, 2015 Share #8 Â Posted September 10, 2015 Now you're getting surly Link to post Share on other sites More sharing options...
fiftyonepointsix Posted September 12, 2015 Share #9 Â Posted September 12, 2015 It would be interesting to know what software they are using. Link to post Share on other sites More sharing options...
uhoh7 Posted September 12, 2015 Author Share #10 Â Posted September 12, 2015 Bone Crusher LOL I'll remember, but just use the initials BC Â Nobody cares who slaved over their favorite glass, I guess. Link to post Share on other sites More sharing options...
fiftyonepointsix Posted September 12, 2015 Share #11 Â Posted September 12, 2015 Â Nobody cares who slaved over their favorite glass, I guess. I know who slaved over my Favorite glass. It was me... On some of them, I spent more time than the person originally assembling it. That is for sure. Link to post Share on other sites More sharing options...
uhoh7 Posted September 13, 2015 Author Share #12 Â Posted September 13, 2015 I know who slaved over my Favorite glass. It was me... On some of them, I spent more time than the person originally assembling it. That is for sure. More power to you, but all credit given, adapting, repairing, mounting, is somewhat easier than making the optical forumula and bringing it to life in the first place. Not that I could do what you do. Â But the 135/3.4 is one of the very sharpest Leica lenses today. Mandler is practically a god in this forum and elsewhere, but we have no clue who was in charge of the Telyt APO? Link to post Share on other sites More sharing options...
fiftyonepointsix Posted September 13, 2015 Share #13 Â Posted September 13, 2015 I had two optical engineers that worked for me. It was very interesting to watch them work. One working on lens pairs to be used for an optical computer. The alignment was critical, and temperature was a factor. The "Big Boss" would make statements like "Just formulate the metal for the barrel to have the same coefficient of expansion as the glass". The optics preserved the phase of the light coming through the lens. The computer worked by comparing the image being observed with one stored. When the two matched, the images canceled out. $40K per lens, 1980s. Â Same engineer working on a multi aspheric design, annoyed that the manufacturer of the element only gave the coefficients of the polynomial to 3 decimals and not 5... "Bernie, the camera is only 320x200 resolution..." I took apart a Kodak Ektasound 130 Super-8 movie camera to get the 9mm F1.2 lens from it. Next day- he asked if I had 50 of them. Link to post Share on other sites More sharing options...
uhoh7 Posted September 13, 2015 Author Share #14  Posted September 13, 2015 I had two optical engineers that worked for me. It was very interesting to watch them work. One working on lens pairs to be used for an optical computer. The alignment was critical, and temperature was a factor. The "Big Boss" would make statements like "Just formulate the metal for the barrel to have the same coefficient of expansion as the glass". The optics preserved the phase of the light coming through the lens. The computer worked by comparing the image being observed with one stored. When the two matched, the images canceled out. $40K per lens, 1980s.  Same engineer working on a multi aspheric design, annoyed that the manufacturer of the element only gave the coefficients of the polynomial to 3 decimals and not 5... "Bernie, the camera is only 320x200 resolution..." I took apart a Kodak Ektasound 130 Super-8 movie camera to get the 9mm F1.2 lens from it. Next day- he asked if I had 50 of them. Love this  here is an updated list of unattributed Modern Leica lenses: 135/3.4 APO 18, 21, 24 SEM 21/1.4 24/2.8 asph 24/1.4 28/1.4 90/2 asph APO Summarit 35/50/75/90 Link to post Share on other sites More sharing options...
sleepyhead Posted September 13, 2015 Share #15 Â Posted September 13, 2015 What about the modern 50mm Elmar-M - is the designer known? Link to post Share on other sites More sharing options...
uhoh7 Posted September 13, 2015 Author Share #16 Â Posted September 13, 2015 What about the modern 50mm Elmar-M - is the designer known? LOL Nope! another one! Link to post Share on other sites More sharing options...
MarkP Posted September 13, 2015 Share #17  Posted September 13, 2015 Love this  here is an updated list of unattributed Modern Leica lenses: 135/3.4 APO 18, 21, 24 SEM 21/1.4 24/2.8 asph 24/1.4 28/1.4 90/2 asph APO Summarit 35/50/75/90  Maybe they were designed by committee. Link to post Share on other sites More sharing options...
FlashGordonPhotography Posted September 13, 2015 Share #18 Â Posted September 13, 2015 Maybe they were designed by committee. Â The way all three of the 135 APO's I've owned focus, I wouldn't be surprised. Â Gordon Link to post Share on other sites More sharing options...
uhoh7 Posted September 14, 2015 Author Share #19  Posted September 14, 2015 The way all three of the 135 APO's I've owned focus, I wouldn't be surprised.  Gordon LOL I thought I had the only one which was a challenge, but I'm hittin it lately:  Hidden Lake by unoh7, on Flickr  Just another poor fatherless Leica lens. Or I could call them the......no no, I won't go there Link to post Share on other sites More sharing options...
luigi bertolotti Posted September 14, 2015 Share #20  Posted September 14, 2015 It would be interesting to know what software they are using.  Pro/Engineer for mech design of lenses' bodies (I seem to remember) ... no idea about lens computation in itself : there are lot of programs and lot of optimization tools available, in the market, in the public domain, in-house developed... I wouldn't be surprised if Leica uses some pieces that derive from a longtime internal Sw development... it is like this in many companies which have a technology into they have had an historical know-how on the computational side.  Link to post Share on other sites More sharing options...
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