I don't have a timer so I just flicked the switch powering my enlarger quickly. 60W incandescent light source through a 50mm lens. Not sure of the f...
I've never been up top. The elevator was being repaired or renovated IIRC and so it was closed. Last time I was in DC was during July 4th and it was...
I've done pinhole on 14"x17" and 20"x24", both years ago. Worked fine. My goal was never "optimal pinhole size" sharpness, rather, a balance between...