Old Vintage Cameras: Minolta Film Camera

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.

Minolta Disc Camera	Minolta Freedom Zoom 90 35 mm Camera
Minolta Autopak 600-X	Minolta MD 50mm Lens
Minolta MC Rokkor-X PG 50mm Lens	Minolta 16 P Spy Camera
Minolta Dynax 404si SLR 35mm Film Camera	Minolta AL-F Film Camera

Old Vintage Cameras

Pages

Wednesday, August 22, 2012

Minolta Film Cameras

Minolta Film Camera Collectibles

Old Photo

Kodak News Releases

Random Photo

Old Photo

George Eastman House Blog

Old Photo

APUG

Old Photo

Old Photo

Polaroid.com Latest Press