Snelling, Henry Hunt, 1816-1897 · [New York : W.B. Smith] · leaf 16
In the ordinary cameras used by artistsfor sketching, a mirror is introduced whichthrows the image on a semi-transparenttable. Fig. 12 is a section of one form of suchan instrument: a a represents the box, inone end of which is fixed the lens h. The … 12. lenticular image falls on the mirror c,placed at such an angle that it is reflectedon the plane of ground glass d. e is ascreen to prevent the overpowering influ-ence of daylight, which would render thepicture almost invisible. This form of theapparatus, though very interesting as…
Photography · Art and photography
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![An illustration from Cours d'architecture enseigné dans l'Academie royale d'architecture : premiere[-cinquième] partie ... (1675)](https://img.insideoutlibrary.com/img/200/ia-coursdarchitectu00blon-573-468.webp)
