The service door at the back of building # 17 at Norristown State Hospital in Montgomery County, Pennsylvania. The structure was built in the 1880s and abandoned since the 1960s.
Sakai Toyo 5x7 large format metal field camera with 4x5 film back.
90mm F5.6 Schneider Super-Angulon lens in a Copal 0 shutter.
Kodak Ektascan BR/A single-sided X-Ray film shot at ISO 100.
Exposure was 1/30 second at F22.
Developed in Rodinal/Adox Adonal 1:150 dilution for 7 minutes @ 20 degrees Celsius in Mod54 daylight developing tank.
Negative scanned with Epson V600.