Keith (M) Posted February 23, 2018 Share #1  Posted February 23, 2018 (edited) Advertisement (gone after registration) On MacFilos website  Snip from the article:-   A few weeks ago I ordered the new Leica lens poster, containing pictures and details of 112 Leitz and Leica lenses through the ages.I unravelled it today and I was astonished how up to date it is. In fact, it is positively futuristic and includes one lens with a very strange maximum aperture that isn’t yet in the public domain. Poster boy should have kept this one in his budgie smugglers. Shiver me timbers, I thought, as I spied this unicorn of an optic — a Leica 90mm Summilux-M ASPH with a very odd f/1.5 aperture. Edited February 23, 2018 by Keith (M) Link to post Share on other sites More sharing options...
Advertisement Posted February 23, 2018 Posted February 23, 2018 Hi Keith (M), Take a look here 90mm f1.5 Summilux-M - Truth or Fiction?. I'm sure you'll find what you were looking for!
otho Posted February 23, 2018 Share #2 Â Posted February 23, 2018 One user saw it a few weeks ago: https://www.l-camera-forum.com/topic/281431-poster-with-all-leica-m-lenses-ever/?p=3455191 Link to post Share on other sites More sharing options...
SiggiGun Posted February 23, 2018 Share #3 Â Posted February 23, 2018 1.5 is less strange than It looks (today) . The Summarex 8,5cm had 1.5. An other example is the Zeiss Sonnar 50 with 1.5. As mentionned , the lens may be real soon. It code ist present in a recent firmware update. 1 Link to post Share on other sites More sharing options...
Susie Posted February 23, 2018 Share #4  Posted February 23, 2018 Mmmm. I think I mentioned a possibility of an updated Summarex back in December......  Susie Link to post Share on other sites More sharing options...
LocalHero1953 Posted February 23, 2018 Share #5 Â Posted February 23, 2018 When I bought the Thambar, the dealer mentioned another retro design lens in the offing. On the basis that they would relaunch one with cult status (for publicity value) a Summarex would fit. Link to post Share on other sites More sharing options...
wattsy Posted February 23, 2018 Share #6  Posted February 23, 2018 (edited) Except this lens (at least as written on the poster) is specifically a Summilux-M ASPH lens by Peter Karbe which suggests it is a new, modern design and not "retro".  The choice of F1.5 rather than the more usual F1.4 of a Summilux is presumably because of an enforced limitation – perhaps relating to the maximum width of the lens barrel (minimising finder occlusion) or due to RF accuracy – rather than a deliberate nod to the Summarex. Otherwise, why not just call it a Summarex-M? Edited February 23, 2018 by wattsy Link to post Share on other sites More sharing options...
ianman Posted February 23, 2018 Share #7 Â Posted February 23, 2018 Advertisement (gone after registration) Would they introduce another "retro" 90mm so soon after the Thambar. I would have thought that a different focal length is more likely. 1 Link to post Share on other sites More sharing options...
01af Posted February 23, 2018 Share #8 Â Posted February 23, 2018 Would they introduce another "retro" 90 mm so soon after the Thambar? "Retro"!? Link to post Share on other sites More sharing options...
ianman Posted February 24, 2018 Share #9 Â Posted February 24, 2018 you may want to read the previous messages. Link to post Share on other sites More sharing options...
NodNova Posted February 24, 2018 Share #10  Posted February 24, 2018 The existence of this lens was hinted in M cameras' latest firmware: https://leicarumors.com/2017/11/29/new-firmware-for-all-leica-m-cameras-released-new-summilux-m-90mm-f1-5-asph-lens-rumors.aspx/  The max aperture of F/1.5 is very likely due to the restriction of rangefinder focus accuracy, according to Peter Karbe himself in an interview on the design of Noctilux 75/1.25:  "The diameter of the entrance pupil – in other words the ratio between focal length and aperture – should not exceed 60mm in order to facilitate the operation of the rangefinder."  So my guess is that: yes, the Summilux-M 90/1.5 ASPH does exist, and it should be a modern optical design with very high performance on par with that of Noctilux 75/1.25. Link to post Share on other sites More sharing options...
frame-it Posted February 24, 2018 Share #11  Posted February 24, 2018 i saw this on dec 1st last year..old news  https://www.l-camera-forum.com/topic/279372-summilux-m-11590/   One user saw it a few weeks ago:https://www.l-camera-forum.com/topic/281431-poster-with-all-leica-m-lenses-ever/?p=3455191 Link to post Share on other sites More sharing options...
farnz Posted February 25, 2018 Share #12  Posted February 25, 2018 I hope it's arrival will persuade owners of the 90/2 APO-Summicron-M asph to trade up and release their Summicrons into the wild, which might bring their price down on the used market, and persuade me to reacquire a much-loved lens (until mine suffered from separation).  I can hope can't I?  Pete. 1 Link to post Share on other sites More sharing options...
Paul J Posted February 25, 2018 Share #13 Â Posted February 25, 2018 (edited) I like that's f1.5 any other company would just lie and say it's a 1.4 - it' mostly like f1.46 or something like that. Â I think it's because of the 60mm Entrance Pupil limitation Leica have discussed. Edited February 25, 2018 by Paul J Link to post Share on other sites More sharing options...
luigi bertolotti Posted February 26, 2018 Share #14  Posted February 26, 2018 (edited) 1,5 on a 90 is exactly the same focal/aperture ratio of 1,25 on a 75, which has been already introduced (and brings to the above mentioned 60mm of entrance pupil)  : probably (let's wait for specs) there is also a relationship between the 2 designs. Edited February 26, 2018 by luigi bertolotti Link to post Share on other sites More sharing options...
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