As per my other thread, I am thinking of giving Dry plate Tintypes a go.
Part of the reason behind this, instead of wet plates, is that I have a pre-conceived opinion that I don't need to develop then and there on the spot.
Before I continue, I'd like to possibly get some FACTS! (novel hey).
With dry plates, how long can you leave them after the plates have been coated before you should use them?
Also, how long can you leave them after exposure before they must be developed?