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Coma with 90mm Apo Summicron R on SL


Likaleica

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This is with stacked RM and MT adapters.  Anyone experiencing anything similar with other R lenses?

 

1/160 sec at f/2  ISO 200

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Happens at f/2 and f/8.  100% enlargement.

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One more example at f/2.8

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What did this lens perform like on film? That's the reference standard, for me, so I'd need to see a similar exposure on 100 speed film to evaluate whether the SL is adding anything to the lens rendering or whether it's just what to expect with the lens. 

 

I don't have the APO Summicron-R 90mm, I have the older Summicron-R 90mm. Comparing to an exposure quick-test with ACROS 100 at all apertures, the lens behavior seems the same, but I don't have anything to evaluate coma against specifically. Maybe I'll shoot some streetlights tonight. 

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