During the College Organizational Recruitment Week, Red Lens put up a Dark Room Inspired booth featuring Red Lens’ works of arts and Red Lens’ camaraderie. The main feature of the booth is the demonstration of the “Camera Obscura”. The booth can be transformed into a huge camera obscura so that the audience can experience the feeling of being inside a camera after being inside a dark room.

The camera obscura (Latin for ‘dark room’; literally ‘darkened chamber’) is an optical device that projects an image 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. of its surroundings on a screen. It is used in drawing and for entertainment, and was one of the inventions that led to

Using mirrors, as in the 18th century overhead version (illustrated in the Discovery and Origins 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. [More Photos]

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