1839 __ Outdoor room camera obscura
‣ Comment : A typical outdoor room camera obscura is shown in the inaugural edition of the new Magazine of Science this year. It in fact appeared on the front cover and was described as ‘a favourite amusement to view it’s varied and animating pictures” .The article described further how the camera obscura could be used to form images and how different lenses could be used in place of others. The writer concluded that the camera room "is of such simple construction as to be easily understood, and represents the objects subjected to it with so unerring a fidelity, and in all their vivid colours [...] or it may be made still more easily in that form usually called a Portable Camera, a description of which will appear in our next number." In the next issue, the magazine made mention of Talbot and Daguerre and their "newly discovered and important process of Photogenic Drawing.".
‣ Original excerpt : « The engraving represents a room, into which the light penetrates only through the top at C. The rays of light A, tinged with the color of the objects reflected, pass through a hole in the side of the upper part on the instrument, and strike upon the looking-glass or reflector B, from this they are cast down upon the double convex lens C, fixed in the cross partition F G. — here they diverge in proportion to the focus of the lens, and passing onwards are at last met by the white table below, D E, where the original objects are vividly depicted [...] — Portable Camera. — This instrument has ... modifications : the above construction may be adapted to a large conical box, there being one hole or pore cut un the side of it, to view the objects represented on the table within. A very convenient portable camera obscura for drawing landscapes or other objects [...]. The draughtsman introduces his hand with the pencil through an opening in the side, made in such a manner as to allow no light to fall upon the picture, which is exhibited on the paper, a cloth covering over the man. The tube containing the mirror and lens can be turned round by a rod within, and the inclination of the mirror changed, so as to introduce objects in any part of the horizon. — The “Box Camera” is still more portable, and may be constructed with yet greater facility. »
‣ Source : Anonymous (1839), “The Camera Obscura”, In Magazine of Science and School of Arts, London : W. Brittain, Vol. I, Third Edition (1842), pp. 2-3.
‣ Urls : http://www.precinemahistory.net/1830.htm (last visited )
No comment for this page