2021年7月7日水曜日

Leica M-Summilux 50mm/1.4-2nd

One of the most favorite Leica format lens is M Summilux 50mm/1.4-2nd generation designed by Dr. Walter Mandler specialized in Leitz Canada GMBH in Midland Ontario. I had been an user of this superb lens on M3 model half a century ago with the best contentment. Double Gaussian lens design and invitation of precious High brightness with Low dispersion special glass materials and huge amount of optical design calculation must have been done without doubt. What should be notable is the Axis Aberration correction between 1.4 and 2.0, no other one shows this corrective way including large format. Probably this way of correction might affect on the reproduction of the atmospheric condition in every iris position. This is why I have been keeping this lens as a juel in spite of revolutions in my life. According to the transition to SLR camera it was not used untouched. Though some arrangement to fix on SLR, the clogged barrier of shorter flange back value firmly prevent to proceed at all. As a good Gospel for me, recent improvement in Mirror-less designed camera body made it possible to put Range-Finder camera lenses for Leica M on it through mounting adapter. Above all iris closing condition could be recognized as a brighter finder picture and more over 10 times magnifying capability is like a different world like some large format with Loupe magnifying scenery, it sounds me like a fairy tale in wonderful dream. Now the sourcer of Full frame digital format is prepared for the Marble! Though a few Leica M to Sony E lens mount adapters are in the market, innate character of 1m close-up distance might be a disadvantage to be comparable with recent productions. Deeper consideration led me to the conclusion that Re-installation of Summilux 50mm front lens unit into another 50mm SLR lens barrel. Hexanon AR 52mm/1.8 was selected as a donor judging from a ease for modification, rotating helicoide ring travelling angle was adjusted to gain more close-up capability till 380mm. Fixing the lens unit at infinity position with no axis inclination was the hardest task with desperate effort. No modification such as grinding is done on Summilux at all, barrel adjustment only, so Summilux would be re-set on the original genuine barrel immediately. Leica M-Summilux 50mm/1.4 -2nd generation takes a picture with 380mm close-up distance, iris closing condition with brighter EVF and focusing under 10 times enlarging magnification , just Fantastic!

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