I have found what appears to be a faded version of The Polaroid - as a trinket : r/bindingofisaac
I got both The Polaroid and The Negative by using Diplopia. : r/bindingofisaac
The Best Binding of Isaac Seeds (Repentance and Afterbirth+) | Blog of Games
The Best Binding of Isaac Seeds (Repentance and Afterbirth+) | Blog of Games
The 10 Best Trinkets in "The Binding of Isaac: Rebirth" - LevelSkip
Binding of Isaac: Rebirth Item Ideas 2 by A-Ithyphallophobiac on DeviantArt
Apparently gulping the faded Polaroid makes it unable to open the door in depths which I guess makes sense since you can't put it in the door if you swallowed it :
Steam Community :: Guide :: The easiest way i found to unlock the Planetarium (The stars are calling...) [Repentance DLC]
The Binding of Isaac: Repentance Tainted Characters Guide | The Binding of Isaac: Repentance
The Binding of Isaac: Repentance Tainted Characters Guide | The Binding of Isaac: Repentance
The Binding of Isaac: Repentance |OT| One last run into the unknown depths below OT | Page 28 | ResetEra
The Polaroid - Binding of Isaac: Rebirth Wiki
The Binding of Isaac: Repentance |OT| One last run into the unknown depths below OT | Page 28 | ResetEra
The Binding Of Isaac: Repentance - How To Unlock Tainted Characters
Faded Polaroid trinket : r/bindingofisaac
The Binding of Isaac Repentance Patch Notes - Full List of New Features
The Binding of Isaac: Repentance - ALL Trinkets RANKED Tier List - YouTube
Learning of Isaac #14 - Lazarus le Nul - YouTube
The 10 Best Trinkets in "The Binding of Isaac: Rebirth" - LevelSkip
The Binding Of Isaac: Rebirth - The Polaroid and The Negative AT ONCE - Quick Tricks Ep. 2 - YouTube
About: Complete Guide For Binding of Isaac Rebirth (iOS App Store version) | | Apptopia
Steam Workshop::the polaroid (and the negative) but awesome
The 10 Best Trinkets in "The Binding of Isaac: Rebirth" - LevelSkip
Tip: You can use Faded Polaroid to save another item ;) : r/thebindingofisaac