Editing Eyemo (section)

==Construction==
[[Image:EyemoMotorNikon.jpg|thumb|250px|Eyemo with Motor and Nikon Lens]]
The Eyemo is a non-reflex camera: viewing while filming is through an optical [[viewfinder]] incorporated into the camera lid. Some models take one [[Photographic lens|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.
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Eyemos feature a built-in [[clockwork]] (spring wind) motor which, when wound by a [[Ratchet (device)|ratchet key]], can shoot about 20 seconds of film per winding at standard 24 fps ([[Frame rate|frames per second]]) speed, and also runs at speeds of four through 64 fps, depending on the model. The camera can be hand-[[Crank (mechanism)|cranked]] with a manual crank accessory. Several optional [[electric motor]]s are available; some use [[Direct current|DC]] [[Battery (electricity)|battery]] power while others use household [[Alternating current|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.

The Eyemo takes an internal load of 100 feet (30,5 m) of [[Film stock|film]], which lasts for slightly over one minute when filming at 24 fps. Some models also accept a 400 ft or 1000 ft [[Camera magazine|magazine]] that is attached to the back, and can hold 4⅓ and 11 minutes of film respectively. When used with a 400 ft magazine, the Eyemo is cumbersome (but not impossible) to operate without the use of a [[Tripod (photography)|tripod]], while the use of a 1000-ft magazine requires tripod support.

Some camera shops have modified Eyemos for reflex viewing, attached [[video tap]]s and motors to them, and modified the proprietary lens mount to allow the camera to use different optics (such as lenses made for still [[Nikon]] cameras).

Bell & Howell also built the successful 16 mm "[[Filmo]]" which became first available at the end of 1923. In the 1930s, this camera was marketed as a 'semi professional' camera while the [[Filmo 127]] was introduced as an amateur camera using [[8 mm film]].


Various government and military organizations used specialty motion picture cameras based on the eyemo mechanics for scientific tests and filming. One manufacturer being MultiData. NASA was a notable organization that used such cameras in one case for testing with lasers.