Showing posts with label Hudson Photographic. Show all posts

Saturday, March 23, 2013

Hudson Photographic

Hudson Photographic Super 8mm Auto Butt Splicer

Chrome and Black Hudson Photographic Ind Super 8mm Automatic Butt-Splicer in good condition circa late 1950s. Includes Original Box, Butt Splicer, and Splicing Tape.

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.

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Saturday, March 23, 2013

Hudson Photographic

Hudson Photographic Super 8mm Auto Butt Splicer

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