There is, indeed, an aperture range at which the Summilux-M 50mm ASPH produces less-than-desirable effects with out-of-focus points of light. If I recall correctly, I was well aware of this, before I bought my Summilux, knowing that it is for shooting either wide-open, or at f/5.6 and beyond. One remedy, if one wants to shoot from f/2 to f/4.8, is to use another 50mm lens, which is probably one of the several reasons why I soon added a Summicron-M 50mm, is, indeed, one of the several reasons I added a Voigtlander APO Lanthar 50mm VM, in 2023. One can never have too many 50mm lenses.
Of course, then, there is the Leica Re-Edition Thambar-M 90mm lens, with TWENTY aperture blades.
Life is good.
Dec 22, 2024 at 02:15 PM
Previous versions of RexGig0's message #16712776 « Why are Leicas so expensive? »