Originally Posted by a.noctilux
Anyway these "old design" Summilux-M (thanks Mandler) can give pleasing pictures with subtle color hues that I can not find in more modern (asph.) Summilux or Apo-Summicron-M which are "more perfect" but lack some "human sensivity" or "roundness" in final pictures.
I absolutely agree with you on this, Arnaud - as many would. The Mandler look has a very distinctive colour signature, which is not easy to describe, but quite easy to recognise - something weightier and more intense - especially compared to the lighter, airier feel of the Aspheric lenses, such as the current 50 Lux.
But looking now at some examples of images from both, I do see, along with strong similarities in colour signature, similar out of focus rendering.
As you say, the difference in focal length makes a big difference to the ease of focusing wide open. It also makes quite a difference in terms of overall look. In portraits with the 50 Lux, the subject’s face is likely to be smaller and therefore to sit more within the central zone of higher resolution and sharpness. In portraits with the 75 Lux, in which the face is more likely to fill more of the frame, the falling off in sharpness beyond the centre of the image is more noticeable, with de-focus evident on the sides and top and bottom of the face.
Which might explain why, despite the similarity in optical design, it is not immediately obvious that these lenses are close relatives. Focal length makes quite a difference.
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