I was wondering, how close the Vision 3 films are to each other? Of course the sensitivity and grain differ, but are there much if any differences in terms of colour, contrast and perhaps sharpness too? After all they are being advertised as being intercuttable. If the obvious things like grain are not taken into consideration, would it be impossible to distinguish the different Vision 3 stocks from each other?
To a slighty other thing, if the Vision 3 films are very similar, does it make a lot of sense to have 4 stocks that practically look the same? It shouldn't be a big thing to add an extra stop of ND or an 85 filter.