I had a Certo SuperDolly camera. It was a folding 6x6 with an insert for shooting 645. No rangefinder, but a good viewfinder, however it had a wonderfully sharp Zeiss lens that took great photographs. The problem with taking 645 with the camera is that none of the modern films had the numbering for 645 line up with the window. So no practical 645, but I wanted 6x6.
At the Los Angeles Union Station, I walked through the tunnel to the tracks. On the far end looking up I saw this half dome window. I took a light reading and guessed the distance. When I printed a 24"x24" print, I could clearly see that what looked like dirt on a much smaller print was actually glass etching, and different etching one each piece of glass.
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