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THE AMATEUR PHOTOGRAPHER ADVERTISEMENTS
November 8, 1933
vii
P RAX I DO S
cuu±o*ko±uc ENLARGERS
FOR USE WITH OR WITHOUT CONDENSERS
1
Praxidos Automatic Enlargers give mathematically exact focussing — making pin-sharp enlarging virtually as simple as contact printing, and eliminate the eye-strain and uncertainty of “ hand-and-eye ” focussing. By varying the illumination, enlargements of different degrees of contrast can be obtained with the same sensi¬ tive paper. Any selected part of the negative can be enlarged to any size up to the capacity of the enlarger.
PRAXIDOS No. 502. Gives 10 times enlargements from 4x 4 cm. or smaller negatives. With f/3.5 anastigmat lens. . . .£14 12 6
PRAXIDOS No. 506. Gives 7 times enlargements from 6x6 cm. or smaller negatives. With f/3.5 anastigmat lens. . . .£15 0 0
PRAXIDOS No. 482. Gives 7 times enlargements from 3\ X2i in. or smaller negatives. With f/4.5 anastigmat lens.... £18 2 6
PRAXIDOS No. 491 . Gives 7 times enlargements from 3ix2£inor smaller negatives. With f/3.5 anastigmat lens.... £19 7 6
PRAXIDOS “ 0." Non-automatic Vertical Enlarger, for 4X 4 cm. or smaller negatives. With f/4.5 anastigmat lens.... £6 15 0
PRAXIDOS “ 0." Non-automatic Vertical Enlarger, for 6x6 cm. or smaller negatives. With f/4.5 anastigmat lens ... .£7 10 0
Illustrated Lists free on application to the Sole Distributors :
Negative Holder for Uncut Films.
THORSCH & CO., LTD., 37, BEDFORD ST., STRAND, W.C.2
NOW READY
A NEW AND THOROUGHLY REVISED EDITION— THE THIRTEENTH OF
WALL’S DICTIONARY OF PHOTOGRAPHY
Price 7/6 net
By post 8/
From all leading Booksellers or direct from the publishers.
AND REFERENCE BOOK FOR THE AMATEUR AND PROFESSIONAL PHOTOGRAPHER
Edited and largely re-written by F. J. MORTIMER, Hon. F.R.P.S.
All the latest photographic principles are incorporated in the present edition, which includes up-to-date information on such recent developments as infra-red, high-speed and colour photo¬ graph/. The volume provides practical information in dictionary form on every phase of the subject — technical, pictorial, scientific and general, and is in itself an explanatory index to all terms, formulas, etc. Its 645 pages are made readily accessible by the extensive use of cross references.
ILIFFE & SONS LIMITED, DORSET HOUSE, STAMFORD STREET, LONDON, S.E.1
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PLEASE MENTION “ THE AMATEUR PHOTOGRAPHER” WHEN CORRESPONDING WITH ADVERTISERS.