File:Complete self-instructing library of practical photography (1909) (14577798168).jpg

Identifier: completeselfinst03schr (find matches)
Title: Complete self-instructing library of practical photography
Year: 1909 (1900s)
Authors: Schriever, J. B. (James Boniface), b. 1868, ed American School of Art and Photography (Scranton, Pa.)
Subjects: Photography
Publisher: Scranton, Pa., American School of Art and Photography
Contributing Library: New York Public Library
Digitizing Sponsor: MSN

View Book Page: Book Viewer
About This Book: Catalog Entry
View All Images: All Images From Book
Click here to view book online to see this illustration in context in a browseable online version of this book.

Text Appearing Before Image:
a is really a superior instrument for artistic land-scape work, to the more expensive anastigmats. If, however,it is desired to secure a lens especially for landscape photog-raphy there are two primary considerations which must betaken into account; focal length and angle of viezv. The ques-tion of focal length presents some difficulties, yet it can bevaried at pleasure between indefinite limits. It is better toemploy a lens of considerable focal length—one that is twicethe length of the greater dimension of the plate will be ap-proximately correct, as it includes an angle of about 35degrees. Pictures taken with a lens giving a narrow angle,present a perfectly natural appearance, and may be viewedat any distance, but one made with a wide or medium anglelens must be viewed at close range. Even then the fore-ground is sure to be exaggerated, and perspective lines areso increased that a square becomes oblong and a circle anellipse. A short focus lens is, of necessity, a wide angle one.
Text Appearing After Image:
I>R11)CtK Study No. y—See Page 310 By J. II. Field »i w illustration No. 25 See Paragraphs No. Illustration No.164 and 167 26 ij-oj-iU Landscape and General View Photography. 93 This type of instrument gives too great a depth of focus,rendering all planes in the scene equally sharp. 160. Angle of View.—The question of angle of viczv hasmuch to do with what has previously been said regardingthe focal length of the lens; yet it is of sufficient importanceto consider it separately. The angle of viczv of the resultantpicture is determined by the focal length of the lens, com-pared with the size of the plate upon which it is to be used.The a)igle of view of the lens means the greatest angle thatthis particular lens is capable of giving when used upon thelargest plate it will cover. Exactly the same results will besecured on a 4 x 5 plate when using a narrow angle lens of5 inch focus, as a wide angle one of the same focal length.However, a wide angle lens of 5 inch focus may be stop

Note About Images