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ORWOCOLOR NEGATIVE FILM NC 17 MASK.

Size: Miniature films 35 mm 36 photos, 20 photos roll film roll size 127, 120, 620 flat films Sheet film - 65 x 9 cm, 13 x 18 cm, 9 12 cm, 18 x 24 cm, 10 15 cm, 24 x 30 poison

12 x 16.5 cm

General characteristics:

This color film was prepared for still photography (i.e., non-cinema) without the need to use filters, whether the light source is daylight, electronic flash light, blue fluorescent lamps, yellow fluorescent lamps, or tungsten lamps of all kinds, including photoflood lamps (1). ). Ironing is compatible with the color temperatures of the rays of these multiple light sources, so Balanced has weighed its sensitivity to 4000 Kelvin.

1 (1) The author has another book under press (Fundamentals of Photography - Second Edition) that discusses the types of light sources, their characteristics, and their suitability for black and white photography and color photography.
1 wtteing gelling agent

This film is characterized by a wide latitude that resists the results of exposure error, which also maintains the degree of color saturation in the image. Increasing the exposure greatly results in a greatly increased density of the negative, which is always hated and the least of its harmful effects is that it requires greatly increasing the exposure when negative images are printed or enlarged to obtain positive images. This film is used for all purposes that require internal or external color photography.

Sensitivity speed (1):

812ASA DIN

GOST

16: 32 17 = daylight imaging religion 32 = tungsten

Arrangement of layers:

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Colored negative films with an internal mask (2) consisting of the following layers:

1- A solid, colorless layer to protect the film from scratches. 2 - A layer that is sensitive to blue rays and bears yellow color problems

Yellow filter.

A medium layer that is sensitive to green rays and bears scarlet color problems, and scarlet color problems are themselves colored yellow.

E - a middle layer that has no color and is insensitive.

6 - A lower layer that is sensitive to infrared rays and bears cyan color problems, and the cyan color problems are themselves colored in a red-orange color

- Anti halo blue layer

- Film support

Non-curling layer, which is found in sheet films and roll films.

(1) We took the above data from the following translator: Orwo Information (wp, NR, 2118-177 ag 004 a/921/65), (2) Please refer to pages 157-163 for the advantages of the inner mask

Integral mask

Print or enlarge Our Folklore's negative film NC 17 Mask:

Due to the increase in density resulting from the inner mask, this film requires an increase in exposure estimated at times more than if the film was without a mask, and therefore it is desirable that the light source be strong in the printing or enlarging device.

This negative film may be printed on any of the following materials to obtain color positive images: (1) To obtain Miniature images: either Orwocolor positive film PC7 is used or the other film 9 is used Orwocolor positive film C. This last film was specially made to meet the requirements of printing or enlarging negative films with an inner mask. It is also distinguished by the novelty of the images printed on it, and an improvement in the degree of color saturation due to the new Magenta Color Formers that were introduced in its manufacture.

(b) for printing or enlarging on Orwocolor paper on “However, the latter type of paper is not recommended unless the negative is highly contrasted because Orwocolor paper CP 6 CP 3

Cp3 color paper results in low contrast. It requires printing from color negative film

N17 mask On CP3 color paper, the intensity of the carmine filters is greatly increased

magenta or else cyan which calls for a lot of over exposure.

We will come back to explaining the characteristics of each of the films and sensitive papers previously referred to above in the fourth part after you talk about printing and enlarging processes.