Parts Camera - Canon AE-1

4x5 diazo microfiche (expired 2005) shot on 3D-printed 4x5 camera obscura.

 

4 hour exposure at f/2.8 (EV 8-14). Cloudy, rainy then sunny for a short while... not great for estimating long exposure times.

 

Developed in 1:1 dilution of 1% household ammonia hydroxide @ 50C for 1 minute

 

Scanned as 16 bit grayscale transparency @3200dpi on V600. Scanned 2 halves and stitched in Microsoft Image Composite Editor.

Done