dmr
Registered Abuser
Some people call this the Neapolitan Rock, but I know that's not the correct name ...

Here is my humble rock photo I took yesterday, on Worldwide Pinhole Photography Day. 🙂
That's not humble, that's an excellent shot, pinhole or not!
How large can you enlarge a 4x5 pinhole negative like that?
Thanks for the kind comments. 🙂
I haven't had the opportunity but 4x5s can be enlarged to "mega size", certainly larger than 35mm film. Type 55 film in particular is very fine grained, with excellent range of tones. Maybe someone more knowledgeable will reply with their experience enlarging 4x5 negs.
I'm curious on how large is practical from that pinhole-exposed shot, as I know that many pinhole shots look "soft", but yours, at least from the contact print, looks much sharper than most pinholes I've seen.