MDM what is the point of these sample images? They're both soft in focus. Nothing really looks in focus. And BTW the 210mm Sironar-S, which I also happen to own, is not good at 1:1, it's only decent at that aperture. So using f64 with the Sironar-s at 1:1 is already a compromise in image quality.
If you're committed to doing this type of work then you should consider a dedicated macro lens or a process lens like an Apo Ronar.
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