Star shaped bokeh on Kiev Jupiter 8M?

ItsReallyDarren

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I noticed on my Kiev mount J8M when the aperture is set to f/4 the aperture blades make a star shaped pattern. Not a pointy 5 tipped star but more of a circle with little points surrounding it. I've played around with it and one has to really try to get star shaped bokeh to come out. IE shoot way off focus on an xmas tree...

I'm thinking of picking up a regular J8, I believe the older non M's don't have click stops which I like. Do those also make a little star shape at some point when the lens is stopped down?
 
The J8 gives a "normal" aperture at f/4 f/5.6

I like the Kiev version (J8M) of this lens but have never got odd shaped bokeh
 
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