Within a month he began photographing several different large chambered nautiluses, either whole or cut in half to reveal their inner structure. He used his
Ansco 8 × 10 Commercial view camera with a Rapid Rectilinear lens stopped down to US256 (equivalent to f/64) . Notations he made about his exposures during this period indicate that the film he used would be rated approximately equivalent to 16 on today's
ISO scale. Due to the technical limitations of the film and the camera he used, he was forced to make extremely long exposures that were easily ruined by vibrations. Weston's grandson
Kim Weston said his grandfather propped up the shell on the end of an oil drum (the arc of the drum can barely be seen in the background of the image), and the thin metal oil drum head was sensitive to the slightest movement. Weston expressed his frustrations in his
Daybooks: :Wednesday, June 15: "Yesterday I tried again: result, movement! The exposure was 4 hours, so to repeat was no joy, with all the preoccupation of keeping quiet children and cat, ‒ but I went ahead and await development." :The next day: "The shells again moved! It must be the heavy trucks that pass jar the building ever so slightly. Anyway, I have quit trying: I can afford no more film." He recorded that over the next several months he made fourteen negatives of shells. It's not known exactly when he took this particular image, but it had to have been made between April 1 and June 8, 1927, when he recorded in his journal "Last evening I had printed, and am ready to show all shell negatives…". ==Reaction==