Upload & Sell: On
Alex. Do you mean same story as 180/2.8 APO for Ninja?
I will check the 50's this evening as you got me curious
Almass, not the same... I guess with ideal aperture can be found in the 32...33...34 Canadian range (but and here it's rare lenses). I never seen aperture without any N-effect in modern Germans lenses... 36, 37, 38, 39 - all have a bit or even not a bit
I have statistics for R35/1.4 - here almost clear for me... Last half of first batch starts from 32720xx and finished 32734xx and last batch 397xxxx. This releases free from N-effect.
With R180APO - here all clear - only second version starts around from 38974xx (thanks to Ron here). 38972xx - it's still first ver. and have terrible N-effect
But need to check anyway if this important for you. This is mass production and of course possible exceptions during production