Just wanted to take some makro shots in the garden, as I was outside for repotting my tomatoes anyway. But it was way too windy.
At least I can show you the gear I intend to use: my 40 years old #Zörk #Makro #Helicoid with Contax mount, married to my 5dmkII via adapter.
On the other side it is #M42. It was/is meant to be used with enlarger lenses, which are corrected and optimized for sharpness. Depending on the focal length you can photograph 1:1.
Zörk also offers an adapter for Mamiya 645.
Terry Godlove Converts Stunning Vintage Lenses to New Camera Mounts

Terry Godlove spends his spare time modifying the mounts of vintage camera lens for using on mirrorless cameras without needing an adapter

The Phoblographer