It is part of NIP-72:…
It is part of NIP-72: Communities
Several clients have implemented it so far. I’ve found Satellite to be easiest for posting to at the moment, but you can also view them on Habla, Nostrudel, Coracle, NostrKiwi
Next time you want to post- just head over to that Satellite link I sent you (or any other related community) and you can submit a post. You will need to use nostr.build to upload the photo. Then, copy the photo link into satellite (I’m sure direct image uploads will come soon).
Your post will be submitted and viewable in all of n/Photography across clients, as well as also showing up on your profile as a regular post. Hope to see you there!
PSA: The 🌙 icon on Satellite is to show feeds. The 🌍 icon is to show communities.