International photographer (Jan-Dec 1935)

Record Details:

Title:
International photographer
Date:
Jan-Dec 1935
Publisher:
Hollywood : International Photographers of the Motion Picture Industry
Volume:
International photographer (Jan-Dec 1935)
Leaf #:
000294
Language:
English
Subjects:
Motion Pictures, Film Industry Technical Magazine
Collection:
Technical Journals
Format:
Periodicals
Contributor:
Media History Digital Library
Sponsor:
Media History Digital Library
Coordinator:
Media History Digital Library
Description:
International Photographer, published by the Hollywood local of the film industry union for cameramen and camera operators, reported news of the arts and crafts of the motion picture, with an emphasis on cinematography. -- David Pierce, 2011/2013
Date Added:
March 28, 2024
Something wrong or inaccurate about this page? Let us Know!

Thanks for helping us continually improve the quality of the Lantern search engine for all of our users! We have millions of scanned pages, so user reports are incredibly helpful for us to identify places where we can improve and update the metadata.

Please describe the issue below, and click "Submit" to send your comments to our team! If you'd prefer, you can also send us an email to mhdl@commarts.wisc.edu with your comments.




We use Optical Character Recognition (OCR) during our scanning and processing workflow to make the content of each page searchable. You can view the automatically generated text below as well as copy and paste individual pieces of text to quote in your own work.

Text recognition is never 100% accurate. Many parts of the scanned page may not be reflected in the OCR text output, including: images, page layout, certain fonts or handwriting.

Eighteen T h INTERNATIONAL PHOTOGRAPHER August, 1935 ENGLISH AND METRIC LENS FOCUS TABLES I am submitting herewith for the use of all cameramen concerned a lens focus table. These tables are worked out for the European stop numbers; the distances are given in metric measure, with corresponding tables in English feet and inches. The blank spaces are to be used for values computed by the user if that data is desired. These tables have been worked out for a circle of confusion of one-tenth of a millimeter, which is small enough for contact prints and two to four times enlargement. If using a small film camera and making 8" x 10" prints, 1 would advise using a circle of confusion of one one-hundredth of a millimeter, which approximates two and onefourth stop numbers smaller stop in order to sharpen the image on the photographic plate, thereby improving the sharpness of enlargements. By Paul R. Harmer In the diagram you will notice that X is the far distance, Y is the near distance and D is the distance on which the lens should be focused to bring in both X and Y sharp at the selected stop number. S is the stop, f the focal length of the lens and d the circle of confusion. If the user desires to photograph separated points, one in the near distance and one in the far distance he can solve for the required stop by substituting known values in the S formula. In the D formula you solve for the distance to be focused upon when X, Y and S are known. f2 D X = fa — ds f2 D (D-F) f2 + ds (D-F) f2 (X-Y) D 2 YXD — fD (X + Y) f2 (X-Y) ds (X + Y) METRIC 35 mm. LENS .1 mm. Circl e of Confusion PAUL R. HARMER Meters II F1.5 II F2.5 F3 5 F4. '1 F6.. II F9 F 12.5 1! F 18 II F25 II F36 1. II 1 II 0.8 1 1.4 II 0.7 1 1.5 0.7 1 2.0 II 0.6 3.4 II 0.5 | 101. II 0.4 I 00 II 0.3 I 00 II 0.3 I 00 1.5 II II II 1.1 1 2.6 II 1.0 1 3.2 II 0.9 1 5.9 II 0.7 00 II 0.6 I 00 II 0.5 I 00 II 0.4 I 00 II 0.3 I 00 2. II i II II 1.3 1 4.6 II 1.2 1 7.1 II 1.0 | 00 II 0.8 00 II 0.7 I 00 II 0.5 I 00 II 0.4 I 00 II 0.3 I II 0.3 I 00 3. II 1 II II 1.6 119.7 II 1.4 I 00 II 1.2 | 00 II 0.9 00 II 0.7 | 00 II 0.6 I 00 II 0.4 I 00 00 4. II II II 1.9 | 00 II 1.6 00 II 1.3 | 00 II 1.0 I 00 II 0.8 I 00 II 0.6 00 II 0.4 I 00 II 0.3 1 00 5. II II II 2.1 I 00 II 1.8 00 II 1.4 | 00 II 1.1 1 00 II 0.8 I 00 II 0.6 I 00 II 0.4 I 00 II 0.3 I 00 6. II II II 2.2 00 II 1.9 I 00 II 1.5 00 II 1.1 1 00 II 0.8 | 00 II 0.6 1 00 II 0.5 I 00 II 0.3 I 00 7. II 1 II II 2.3 | 00 II 2.0 I 00 II 1.5 I 00 II 1.2 | 00 II 0.9 I 00 II 0.6 I 00 II 0.5 I 00 II 0.3 | 00 10. II 1 II II 2.6 | 00 II 2.1 I 00 II 1.7 I 00 II 1.2 I 00 II 0.9 I 00 II 0.6 1 00 II 0.5 00 II 0.3 I 00 15. II 1 II II 2.8 | 00 II 2.3 I 00 II 1.7 I 00 II 1.2 I 00 II 0.9 I 00 II 0.6 1 00 II 0 5 I 00 II 0.3 1 00 30. II II II 3.2 I 00 II 2.5 I 00 II 1.9 I 00 II 1.4 I 00 II 0.9 I 00 II 0.7 1 00 II 0.5 I 00 II 0.3 00 50. II II II 3.3 1 00 2.6 00 II 1.9 00 II 1.5 1 00 II 1.0 1 00 II 0.7 1 00 II 0.5 00 II 0.4 I 00 40 mm. LENS 1. II 1 II II 0.85 1.25 ll 0.8 1.35 II 0.7 1 1.6 II 0.6 | 2.2 II 0.6 | 4.6 To. I 00 II 0.4 I 00 II 0.3 I 00 1.5 II 1 II II 1.1 2.2 II 1.1 1 2.5 II 1.0 1 3.5 II 0.8 8.3 II 0.7 I 00 II 0.6 00 II 0.5 00 II 0.3 I 00 2. II 1 II II 1.4 1 3.5 II 1.3 1 4.5 II 1.1 1 8.5 II i.o 00 II 0.8 I 00 II 0.6 I 00 II 0.5 I 00 II 0.4 I 00 3. II 1 II II 1.8 | 8.6 II 1.6 118.0 II 1.4 | 00 II 1.1 1 00 II 0.9 I 00 II 0.7 I 00 II 0.5 I 00 II 0.4 | 00 4. II 1 II II 2.1 130.7 II 1.9 I 00 II 1.6 | 00 II 1-2 1 00 II 1.0 I 00 II 0.7 I 00 II 0.5 I 00 II 0.4 I 00 5. II 1 II II 2.4 I 00 II 2.1 I 00 II 1.7 I 00 II 1.3 1 00 II 1.0 00 II 0.8 I 00 II 0.6 I 00 II 0.4 I 00 6. II 1 II II 2.6 | 00 II 2.2 | 00 II 1.8 | 00 II 1.4 I 00 II 1.1 I 00 II 0.8 I 00 II 0.6 I 00 II 0.4 | 00 7. II 1 II II 2.8 00 II 2.4 I 00 II 1.9 | 00 II 1.4 I 00 II 1.1 I 00 II 0.8 1 00 II 0.6 I 00 II 0.4 I 00 10. II 1 II II 3.1 | 00 II 2.6 00 II 2.1 I 00 11 1.5 I 00 II 1.1 I 00 II 0.8 00 II 0.6 I 00 II 0.4 1 00 15. II 1 II II 3.5 00 II 2.9 1 00 II 2.2 I 00 II 1-6 1 00 II 1.2 I 00 II 0.8 I 00 II 0.6 I 00 II 0.4 I 00 30. II 1 II II 3.9 00 II 3.2 00 II 2.3 I 00 II 1.7 I 00 II 1.2 I 00 II 0.9 00 II 0.6 I 00 II 0.4 | 00 50. II 1 II II 4.2 00 II 3 3 00 II 2.4 00 ll 1.7 00 II 1.2 00 II 0.9 I 00 II 0 6 00 II 0.4 00 50 mm. LENS 1. II 1 II 0.9 1.15 ll 0 85 1.2 0.8 1.3 II 0.7 1.5 0.7 1.9 II 0.6 1 3.2 II 0.5 21.0 0.4 60 1.5 II 1 II II 1.2 1 1-9 II 1.2 1 2.0 II 1.1 1 2.4 II 1.0 I 3.1 II 0.9 1 5.5 II 0.7 I 00 II 0.6 I 00 II 0.5 1 00 2. II 1 II II 1.6 1 2.8 II 1 5 1 3.1 II 1.3 1 3.9 II 1.2 6.8 II 1.0 168.7 II 0.8 I 00 II 0.7 I 00 II 0.5 1 00 3. II 1 II II 2.1 1 5.1 II 2.0 1 6.4 II 1.7 11.3 II 1.4 I 00 II 1.2 | 00 II 1.0 | 00 II 0.8 I 00 II 0.6 1 00 4. II 1 II II 2.6 8.9 II 2.3 114.0 II 2.0 I 00 II 1.7 I 00 II 1.4 | 00 II 1.0 00 II 0.8 I 00 II 0.6 I 00 5. II 1 II II 3.0 16.4 II 2.6 146.7 II 2.2 | 00 II 1.8 00 II 1.4 I 00 II 1.1 00 II 0.8 I 00 II 0.6 00 6. II 1 II II 3 3 136.0 II 2.9 I 00 II 2.4 | 00 II 1.9 00 II 1.5 00 II 1.1 I 00 II 0.9 I 00 II 0.6 I 00 7. II 1 II II 3.6 I 240. II 3.1 1 00 II 2.6 I 00 II 2.0 | 00 II 1.6 I 00 II 1.2 1 00 II 0.9 00 || 06 00 10. II 1 II II 4.2 | 00 II 3.6 I 00 II 2.9 I 00 II 2.2 | 00 II 1.7 I 00 II 1.2 I 00 ii 0.9 00 II 0.7 | 00 15. II 1 II II 4.9 00 II 4.0 1 00 II 3.2 I 00 || 2.4 00 II 1.8 I 00 II 1.3 I 00 II 0.9 I 00 II 0.7 I 00 30. II 1 II II 5.8 00 ll 4.8 ] 00 II 3.5 I 00 II 2.5 | 00 II 1.9 00 II 1.3 00 II 1.0 00 II 0.7 I 00 50. II II II 6.3 00 II 5.0 00 3 8 I 00 II 2.6 1 00 II 1.9 00 1.3 00 II 1.0 00 II 0.7 I 00 Please mention The International Photographer when corresponding with advertisers.