What do I call this medium? It’s a tintype, but tintypes never really had much to do with “tin”, and more recently I use aluminum plate. And this isn’t that, either. Although, judging by the rust, maybe this is actually closer to the original ferrotype (on iron).
I’m going to go with “ilfordfilmcannisterotype”. You heard it here first.
Is this suppose to make sense to a layman?
I guess not really. It’s more of a visual thing anyhow – I made a tintype-type image on a film canister, that’s all.