This is something I picked up while watching another clip about the UK photographic show held earlier this year.
What I have never really been to concerned about was the use of Polaroid on large format cameras, mainly because I could never afford to use their product, and also because the image quality was to my mind inferior; but I always conceded that as a use for a reference about exposure, or in this case for the model to understand what was happening a Polaroid was always very good.
This is something new, in fact the first time I have heard about it, it takes Fuji Instax film and the back is compatible with most 4x5 cameras. Interestingly the camera used is what I have been using, so I know this would fit.
What is important starts just after the 23 minute mark.
Things are still happening, eh....