John, super thanks!
Snoogly, thanks to you too. I bought this lens from one of our members, Brent Elliot, for about $40.
Erik, modified the lens to F-mount. (what a guy)
Birna told me it was better suited for C-mount because of the smaller distance between the rear element and the sensor. For the same reason I suspect it is better suited for Z-mount, too.
All I need to do now is buy a Z-fc (and get that guy to modify it again)
As it is now, I can barely get anything sharp. But that doesn't mean that i don't have fun with it.
Thank you, Dogman!
Here is another from the lavender on my balcony series.
Speaking of smoothness.