Collodion: Shoot like it's 1851. A wet-plate camera for iPhone.

Hi Product Hunt, maker here. I'm an iOS engineer and I got tired of "vintage" filters that are just sepia and a vignette. So I built a camera that reproduces the spectral response of 1850s collodion instead of a color grade: red goes black, skin goes porcelain, blue skies burn out, plus the Petzval edge fall-off of a period portrait lens, pour marks and silver grain. The plate look is live in the viewfinder, and the saved plate goes through exactly the same Core Image chain, so what you compose is what you get. Three plates: Tintype on black iron, a clean studio Silver plate, and Ambrotype on dark glass. Dials for exposure, grain and softness. Import any photo from your library and develop it as a plate. Everything runs on-device. One price ($2.99), no subscription, no account, no analytics, no network. Photos never leave your phone. I'd love feedback on the plate looks, especially on darker skin tones, and on what a 1.1 should add. Depth-based focus with a depth-aware preview and more plates are on the list.