Has anybody ever used one of these https://www.amazon.com …nements=p_85%3A2470955011
with manual bellows to allow control of the aperture of a modern lens?
They say it works with manual extension tubes, so it ought to work with manual bellows.
I just don't have, and am unlikely to have $800-900 for a Novoflex auto-bellows for Canon EF.
If it works, it would allow me to use affordable manual bellows, and still allow me to both easily set the aperture, and use DSLR Controller to do focus stacking.

