>>2716957Tri-x definitely has one. I don't remember the details but I've never encountered a roll of 120 or 220 that didn't have some sort of way to ensure the roll is tightly wound. Some films you have to lick the tab like an envelope (Arista films come to mind) while others are simply a sticker (Fuji 400H is like this).
>>2716969Trust me, I would have much rather been wandering that cave with a babe than my burned-out, hippie friend. Even with the latitude of black and white film, I don't think I could have made a perfect exposure there.
