Summarit 40 mm f:2,4


Leica Summilux 40mm f/2.4 proveniente de una Leica Minilux convertido a montura M por Sadayasu Miyazaki de MS Optical R&D


Vista del objetivo acabado con la rosca para filtros implementada y parasol (Japan Exposures).
Este Summarit ya se ha convertido en un objetivo legendario a la altura del Summicron 50 f/2 según Erwin Puts.


Desarrollo óptico simétrico de Doble Gauss en 6 elementos y 4 grupos. Considerado el último mohicano del doble gauss, diseñado por el propio Dr. Kölsch, prácticamente igual pero mejorando algo en resolución al cron 35/2 de 7 elementos (pre-asph) de los ochenta y acercándose mucho al asph según Puts..


Comparación, incluyendo parasol, con otro conocido doble gauss, el rokkor (primo hermano del cron 40):


Especificaciones de MS Optical:


Diafragma de 7 palas y acoplado al telémetro:


Algunos comentarios de Erwin Puts:
"Contrast and crisp reproduction are excellent at all apertures. The MTF for the 1:5.6 setting indicates a performance as good as that of the Summicron-M 2/35 asph and slightly better than that of the Summicron-M 2/50mm.
Wide open the lens has a lower overall contrast and definition of very fine detail is not as crisp as with the 35mm lens. Distortion is totally absent and again we see the trade off between contrast wide open and distortion.
This lens has a consistently good image quality over most of the image field and at all apertures. Only the corners lag behind.
Where lenses do differ is in light falloff and flare. The Summarit has a vignetting wide open of more than 2 stops, which is visible. Flare reduction is excellent and up to the best current Leica lenses. Again: at very oblique angles and strong sources there are the inevitable ghost images. More important than the ghost reflections, is the control of the contrast in flary light. This is quite good."

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