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wayne seltzer wrote:
Hey Martin and Carsten, do you believe my earlier statement that the ZF 35/1.4 is a undercorrected Spherical Aberration design which is why it has this slightly softer bokeh rendering wide open and near wide open?
Do you agree with these statements and if not why.
Wayne, no I don't agree!
First of all, the ZF/ZE 35/1.4 doesn't give softer bokeh than the Sonnar/RX1. It gives harsher blur disc edges, but is still very nice indeed. I'd say the Distagon renders more "classy" while the Sonnar is smooth and comfy in almost any situation.
The Sonnar seems to be optimized for wide open use and I can't see much improvement regarding sharpness even when stopping down from f/2 to f/4. But also, it never delivers the same clearness stopped down as the Distagon, or the Planar 50/1.4 for that matter.
Softer bokeh isn't always better. I had a love-hate relationship with the Sigma 50/1.4 because of that. It was just too smooth, and while the Sonnar behaves a bit like the Sigma, there is still a lot of "Zeissiness" and the shorter FL makes smooth bokeh a different story.