Basic Photography Course

Figure 2-5.Notch codes used to identify the type of film.

Figure 2-6.Location of notch code that indicates the emulsion

is toward you.

The most popular medium-size format film is No.

120. This film, depending on the camera format,

provides negatives that are 6x6 cm (2 1/4 x 2 1/4
inches), 4.5x6 cm, or 6x7 cm. No. 220 roll film is used
for making the same size negatives, but because most of
the paper backing is eliminated, the roll is longer than a

120 roll and provides twice as many frames as 120 film.

Still picture 35mm films come prepackaged in

cassettes in lengths for producing 12, 20, 24, and 36
frames per roll. Also, 35mm films come in rolls 100 feet
long that can be bulk-loaded into reusable cassettes.

Sheet Film

Sheet or cut film is made in a variety of sizes from

4x5 to 11x14 inches and larger. The most common sizes

are 4x5 and 8x10 inches. Most sheet film has no paper
backing and must be loaded into and removed from film

holders in the darkroom in total darkness or under the

appropriate safelight. Eastman Kodak does market the
Kodak Readyload Packets that provide two sheets of
film in a paper packet. These packets can be loaded into
a Kodak Readyload Packet film holder or a Polaroid film
holder, Model 545. The Kodak Readyload Packets are
available only in 4x5 format.

Most sheet films have reference notches in one edge

of the film. In the dark, this allows identification of the
film type and the emulsion side of the film. Every film
type has a different notch code (fig. 2-5). The emulsion
side of the film is toward you when the notches are along
the top edge in the upper right-hand corner, or on the
bottom right edge in the lower right-hand corner of the
film (fig. 2-6).

For those sheet films that do not have notches, the

emulsion side of the film can be identified under a
safelight. The emulsion side is lighter in color than the
base side. If the emulsion side of the film must be
identified in total darkness, wet your lips and place the
edge of the film between them. The emulsion side of the
film will stick to one of your moistened lips.

FLOPPY DISKS

Although the floppy disks used in electronic

imagery are not light sensitive, they are, however, a
commonly used image-recording medium. All floppy
disks are the same. There are no black-and-white and
color floppy disks. The camera and the printer being
used determine whether the image is black and white or
color. Images are stored as magnetic impulses on
compact 2-inch still-video floppy disks.

The pictures are recorded on tracks on a still-video

floppy disk. Each picture is recorded either as a FRAME

or FIELD (the frame or field mode is selected on the
camera). When the frame mode is selected, each picture
is recorded on two tracks. Twenty-five images can be
recorded on a floppy disk in the frame mode. When the
field mode is selected, each picture is recorded on one
track In the field mode, 50 images can be stored on each
disk. The result of using one track per photograph is the
images are less detailed than those recorded on two
tracks (frame mode). The quality of the frame-recorded
image is superior to that of the field-recorded
photograph. A combination of field and frame images
can be stored on the same disk; however, for higher
quality use the frame mode.

Sound can also be recorded on a floppy disk. Sound

is not recorded on the same track as the image. It is
recorded right after the image is recorded. The sound

2-8

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Basic Photography Course

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DOFMaster for Windows On-line Depth of Field Calculator DOFMaster for Mobile Devices On-line Depth of Field Table Hyperfocal Distance Chart Articles FAQ Recommended Books Support Contact Links Home As an Amazon Associate I earn from qualifying purchases.	contents <- previous page next page -> Figure 2-5.Notch codes used to identify the type of film. Figure 2-6.Location of notch code that indicates the emulsion is toward you. The most popular medium-size format film is No. 120. This film, depending on the camera format, provides negatives that are 6x6 cm (2 1/4 x 2 1/4 inches), 4.5x6 cm, or 6x7 cm. No. 220 roll film is used for making the same size negatives, but because most of the paper backing is eliminated, the roll is longer than a 120 roll and provides twice as many frames as 120 film. Still picture 35mm films come prepackaged in cassettes in lengths for producing 12, 20, 24, and 36 frames per roll. Also, 35mm films come in rolls 100 feet long that can be bulk-loaded into reusable cassettes. Sheet Film Sheet or cut film is made in a variety of sizes from 4x5 to 11x14 inches and larger. The most common sizes are 4x5 and 8x10 inches. Most sheet film has no paper backing and must be loaded into and removed from film holders in the darkroom in total darkness or under the appropriate safelight. Eastman Kodak does market the Kodak Readyload Packets that provide two sheets of film in a paper packet. These packets can be loaded into a Kodak Readyload Packet film holder or a Polaroid film holder, Model 545. The Kodak Readyload Packets are available only in 4x5 format. Most sheet films have reference notches in one edge of the film. In the dark, this allows identification of the film type and the emulsion side of the film. Every film type has a different notch code (fig. 2-5). The emulsion side of the film is toward you when the notches are along the top edge in the upper right-hand corner, or on the bottom right edge in the lower right-hand corner of the film (fig. 2-6). For those sheet films that do not have notches, the emulsion side of the film can be identified under a safelight. The emulsion side is lighter in color than the base side. If the emulsion side of the film must be identified in total darkness, wet your lips and place the edge of the film between them. The emulsion side of the film will stick to one of your moistened lips. FLOPPY DISKS Although the floppy disks used in electronic imagery are not light sensitive, they are, however, a commonly used image-recording medium. All floppy disks are the same. There are no black-and-white and color floppy disks. The camera and the printer being used determine whether the image is black and white or color. Images are stored as magnetic impulses on compact 2-inch still-video floppy disks. The pictures are recorded on tracks on a still-video floppy disk. Each picture is recorded either as a FRAME or FIELD (the frame or field mode is selected on the camera). When the frame mode is selected, each picture is recorded on two tracks. Twenty-five images can be recorded on a floppy disk in the frame mode. When the field mode is selected, each picture is recorded on one track In the field mode, 50 images can be stored on each disk. The result of using one track per photograph is the images are less detailed than those recorded on two tracks (frame mode). The quality of the frame-recorded image is superior to that of the field-recorded photograph. A combination of field and frame images can be stored on the same disk; however, for higher quality use the frame mode. Sound can also be recorded on a floppy disk. Sound is not recorded on the same track as the image. It is recorded right after the image is recorded. The sound 2-8 contents Basic Photography Course <- previous page next page ->	As an Amazon Associate I earn from qualifying purchases.
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