Old Vintage Cameras: Balda Folding Camera

Sunday, February 12, 2012

Balda Folding Camera

Balda Juwella

Balda Juwella Folding Film Camera 1939 -The Balda Juwella is a folding camera made by Balda-Werk Max Baldebeg of Dresden Germany, the company was founded in 1908. A 6×9 folding film camera, the Juwella was produced around 1939 and uses 120 roll film. The fixed lens is an anastigmatic 10.5 cm (105 mm) marked as Pronto. It has a maximum aperture of f6.3. It has shutter speeds 1/100, 1/50, 1/25, and the settings T and B. The main viewer is a framing device, a double window to adjust for parallax error. A viewfinder is also mounted to the lens and shutter.

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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.