I am not disputing the quality and optics of the lens (and certainly not getting into an argument) but I must ask Andy what stretch factor this lens produces? If it is standard then it is X2, which is technically unusable on a 16:9 sensor (as nice as your films look 'QuickHitRecord') for high-end festival and cinema work.
Now you could argue, 'okay who's making films for cinema on here?' well festival screens have the same standards and many would quickly reject a film shot at this insane aspect ratio of 3:55:1 (or similar) Plus many of the projector lenses have a minimum focal distance of 7 feet...meaning a lot of diopter juggling (if it's even possible on some?)
The main question is 'would general audiences be happy to watch a film where the majority of the whole pciture is filled with black?' the answer is probably not.
So Mondo, if you have an HD camera that shoots 4:3 natively then this lens could be perfect! In fact if thats true, you must tell us all which camera that is!! I shoot mainly with the Alexa now but I'm jumping back onto my trusted 7D for a short being shot in the coming months...main reason I'm searching for an Iscorama to hire!
Btw QuickHitRecord I purchased exactly the same lens a couple of years ago and gave up trying to use it on a 7D, for many of the reasons I mentioned above!