Thread: New COMA Killer
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Old 12-08-2019, 10:57 AM
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Atmos (Colin)
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Join Date: Aug 2011
Location: Melbourne
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Having tested a Zeiss Milvus 50mm f/1.4, wide open the stars at the extreme corners of a FF are worse than Lenstip shows (at least my copy is) but at the edge of an APS-C they’re utterly perfect.

Having seen images from a few Sigma Art 50mm and Zeiss Otus 55mm, the coma is a bit worse on the Sigma than Lenstip suggests at the extreme edges. I haven’t had a chance to do a side by side comparison but I’d say that at the EXTREME FF edges the Sigma shows less coma than the Milvus 50mm but the Milvus has better CA and better stars at APS-C distances.
The Otus 55mm however is just magnificent in every respect but you pay through the nose for it.
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