JPS561940A - Photographing method - Google Patents

Photographing method

Info

Publication number
JPS561940A
JPS561940A JP7836579A JP7836579A JPS561940A JP S561940 A JPS561940 A JP S561940A JP 7836579 A JP7836579 A JP 7836579A JP 7836579 A JP7836579 A JP 7836579A JP S561940 A JPS561940 A JP S561940A
Authority
JP
Japan
Prior art keywords
aperture
image
lens
gradation image
original
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP7836579A
Other languages
Japanese (ja)
Inventor
Kazuo Shirakawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toppan Inc
Original Assignee
Toppan Printing Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toppan Printing Co Ltd filed Critical Toppan Printing Co Ltd
Priority to JP7836579A priority Critical patent/JPS561940A/en
Publication of JPS561940A publication Critical patent/JPS561940A/en
Pending legal-status Critical Current

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Abstract

PURPOSE: To prepare easily a continuous gradation image from a discontinuous gradation image consisting of dots or the like as an original using camera work, by stopping down the aperture of a photographing lens extremely, and exposing the camera using a specified aperture.
CONSTITUTION: The photographing lens of a camera is focused on a discontinuous gradation image to be used as an original, then the aperture of the lens is stoppd down until the discontinuous gradation of the image is deteriorated in focus and becomes the cntinuous gradation state. Aperture 1 with effective opening size D' as same as or smaller than that of that aperture and with only an opening area enlarged is provided through light shielding plate 2, which is situated in front of the lens, and a photosensitive material is exposed to an image from the original, thus permitting the discontinuous gradation image to be converted into the continuous gradation image easily in a short time by camera work without using a special lens or an expensive apparatus.
COPYRIGHT: (C)1981,JPO&Japio
JP7836579A 1979-06-21 1979-06-21 Photographing method Pending JPS561940A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7836579A JPS561940A (en) 1979-06-21 1979-06-21 Photographing method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7836579A JPS561940A (en) 1979-06-21 1979-06-21 Photographing method

Publications (1)

Publication Number Publication Date
JPS561940A true JPS561940A (en) 1981-01-10

Family

ID=13659969

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7836579A Pending JPS561940A (en) 1979-06-21 1979-06-21 Photographing method

Country Status (1)

Country Link
JP (1) JPS561940A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01302258A (en) * 1987-05-28 1989-12-06 Fuji Color Service:Kk Method for forming secondary photographic original for printing

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01302258A (en) * 1987-05-28 1989-12-06 Fuji Color Service:Kk Method for forming secondary photographic original for printing

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