Old Vintage Cameras: Dejur

Monday, November 26, 2012

Dejur 8mm Movie Camera circa1948

Dejur 8mm Movie Camera

The uncommon Dejur 8 movie camera was produced around 1948 by the DeJur Amsco Corp. in Long Island, New York, U.S.A.and is equipped with a turret that accepts three lenses, as shown only one lens is with the camera. the Cine Raptar Wollensak DeJur 13mm f/1,9. It weighs about 5 pounds and measures 3 1/2 x 4 1/2 x 1 3/4 inches approximately. The motor winds and clicks, all knobs and buttons move freely, no other testing was performed. Retro Vintage Bazaar has a Dejur 8mm available.

What is a Camera Obscura?

The camera obscura (Latin; camera = vaulted chamber | obscura = dark, thus darkened chamber or room) is an optical device that projects an image of its surroundings on a screen. It is used in drawing and for entertainment, and was one of the inventions that led to photography. The device consists of a box or room with a hole in one side. Light from an external scene passes through the hole and strikes a surface inside where it is reproduced, upside-down, but with color and perspective preserved. The image can be projected onto paper, and can then be traced to produce a highly accurate representation. Using mirrors, as in the 18th century overhead version (illustrated in the History section below), it is possible to project a right-side-up image. Another more portable type is a box with an angled mirror projecting onto tracing paper placed on the glass top, the image being upright as viewed from the back. As a pinhole is made smaller, the image gets sharper, but the projected image becomes dimmer. With too small a pinhole the sharpness again becomes worse due to diffraction. Some practical camera obscuras use a lens rather than a pinhole because it allows a larger aperture, giving a usable brightness while maintaining focus.