This is the only variable aperture lens that I am aware of (that I own) that
does not open to a completely round
aperture, instead it looks more like its fastest f-stop is deliberately limited to be stopped down slightly.
It's small and sharp with Creamy Bokeh even though it only has 5 blades to it's diaphragm.
lens used for image above - 85mm SCHNEIDER MACRO VARON f4.5
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