The hood unfolds automatically, but you have to lock the two braces to hold the hood in open position. For aperture and diaphragm setting see Instantaneous Exposure.To close the camera, please be sure that you first press the mirror lever H until it locks. He was the father of the Folmer & Swing Graflex Cameras. patents among which: an Electric Insect Exterminator, Egg Cartons, Ignition Torch for cigar shops, Gas Burner for Billiard Tables, Stereoscopes and Film Holders.All the advantages of the reflex camera together with the fact that in those days the 3A film was regular obtainable, made this camera very popular with the press and was present on the battlefields of world war II.
The back of the camera is hinged and when opened affords easy access to the film compartments.Most models were for sheet film, some were made for usage with rollfilm.The Graflex vertical focal-plane shutter consists of a single curtain with a series of four slits of widths from 1½ inches to 1/8; inch.Y by the Folmer & Schwing Manufacturing Company of New York, NY.
In the early years it was made in a variety of formats, settling down in the 1920s to a number of long-lived models which share the same basic design and mode of operation.
These represents the width of the 4 curtain apertures.