Gene51, you are a bore sir! You have stolen all the joy out of participating in this forum.
One point to add about quality of the out-of-focus area is that Nikon is pursuing depth realism as a metric for their latest primes.
IMO, this means the DC lenses have a quality issue (only under the new metric) due to rendering the o-o-f area in a discontinuous manner, after the photographer's intervention.
With the zany understanding of bokeh among photographers, I wonder how many of us really know what Nikkor means by its new quality metric of depth realism. Probably this is a new frontier of image aesthetics, outside of Nikkor. One attribute could be that the transition from the focal plane to the adjacent o-o-f plane is preferably not abrupt.
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