The Eyemo is a 35 mm motion picture film camera which was manufactured by the Bell & Howell Co. of Chicago.
Designed and first manufactured in 1925, it was for many years the most compact 35 mm motion picture film camera, having a 100-foot film capacity. Its small size and ruggedness made it a favorite choice for newsreel and combat cameramen (it was used throughout World War II and the Vietnam War, the War Department providing special manuals for it), and also found use for fiction and documentary filmmakers whenever a portable, rugged, and inconspicuous camera was needed.
The Eyemo is still in use by some filmmakers. It is often used these days as a "crash-cam" for filming dangerous stunts and explosions, and shots in which the camera must be dropped from a building or other elevation.
The Eyemo is a non-reflex camera: viewing while filming is through an optical viewfinder incorporated into the camera lid. Some models take one lens only. In 1929 there was the first three-port Eyemo, while the "spider model" features a rotating three-lens turret and a "focusing viewfinder" on the side opposite the optical viewfinder. Eyemos feature a 1½" diameter lens mount except the 71-k model, which is slightly different.
Eyemos feature a built-in clockwork (spring wind) motor which, when wound by a ratchet key, runs about 20 seconds of film per winding at standard 24 fps (frames per second) speed, and also runs at speeds of four through 64 fps, depending on the model. The camera can be hand-cranked with a manual crank accessory. Several optional electric motors are available; some use DC battery power while others use household AC current. There is currently a synchronized motor available for sync sound filming, but no commercially available camera blimp to reduce the camera's noise.