Focus ring (w/tab) for Nokton 50mm f1.1

This is a focus ring attachment for a Voigtlander Nokton 50mm 1.1.

I found that after using the 28mm Nokton 2.0, the 50mm 1.1 was tricky to get used to being able to focus as quickly. I suppose over time that this could get easier as I got more accustomed to the lens but decided to do something about it in the mean time.

The tab is vaguely modeled from the 28mm focus tab so should be a very similar size when printed and in use.

The ring should slip onto the lens from the rear as it w