Quote Originally Posted by MattKing View Post
Sprockets and nice thick, strong film base make for film that advances easily and quickly, is easy to handle, and sits very flat, allowing for precise focusing.

I think 120 film would be great if it was made the same way, instead of with a paper backing.
Agreed...the strong base and margins allow easy handling and filing, and there is obviously a saving in area of emulsion compared with larger formats (not starting a format war!). And cassettes and plastic spools are easily recyclable.

In another world, Barnak might have made his Leica for 70mm movie film, and we might never have had 120.

As it was, 70mm for still work never really took off except for specialist uses.