I got blurry images with a Kodak 16mm lens fixed to a Canon EOS 7D using a C-Mount to Canon EOS adapter. I stumbled on this thread. Catama Productions’ comments here inspired me to take the camera set-up out for one more spin as an “intense Macro lens.” You can see a video from the footage I produced at this URL: https://vimeo.com/128317671.
Thanks for the suggestion,
Adam
https://www.adamcamera.com