File:The American annual of photography (1917) (14780821801).jpg

Identifier: americanannualof1917newy (find matches)
Title: The American annual of photography
Year: 1917 (1910s)
Authors:
Subjects: Photography
Publisher: New York : Tennant and Ward
Contributing Library: Harold B. Lee Library
Digitizing Sponsor: Brigham Young University

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ersare more efficient and can be used at a higher speed. All theseare real substantial advantages which make the little cameraideal. Tiny negatives are of very little use unless they are enlargedand enlarged many times, and for this reason the little nega-tive must be very near perfection or the result will be veryindifferent. There must be no pinholes or scratches whatever.The image must be critically sharp, and the class of negativemust be such that from the highest light to the deepest shadowthere must be printable detail. A negative that will only give avery good contact print will not do if we are to get the bestout of the little camera. It is for this reason that throughoutwe mi^st exercise far greater care than in making negatives forcontact printing or slight enlargement. Every negative mustbear critical examination with a good focusing glass before itwill serve its purpose, and it is interesting to see how few ofour larger negatives will bear this test, although they serve 64
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PORTRAIT. Belle Johnson. their purpose. Much greater care must be observed in handHngthe plates so that they reach the washing tank absolutely freefrom dust and finger marks. If single slides are used a shortbone knitting-needle filed fiat and with the point off is in someways better than the finger-nail for removing the plate, as withthe nail it is difficult to avoid touching the film with the finger.Tank development is an advantage too as it does away with alot of handling of the plate. In any case the plate shouldalways be held by the edges. Even when washed and driedthe negative must be treated with care as a slight scratch onthe surface will show badly in enlarging. Another cause of trouble in enlarging is the grain of theplate, and if the exposure has been short so that the image hasbeen forced up in development the grain will show. Sufficientexposure should be given to enable development to be carriedout with a slightly restrained and diluted developer and thiswill minimize the

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