Basic Photography Course

CHAPTER 4

STILL CAMERAS AND CONTROLS

Cameras have gone through many changes in

design over the years. Several of your chiefs and
division officers remember lugging around bulky,
cumbersome 4x5 Speed Graphic cameras with film
holders and tripods just to cover routine assignments.
Through the development of modern-day cameras and
film, small, hand-held cameras are commonly used. A
large variety of cameras are available in the imaging
facilities of the Navy. After learning the nature of your
assignment and the equipment available, you must
choose the equipment that will get the job done best,
whether it be a 4x5 view camera or a small, hand-held
electronic camera.

The human eye may be compared to a camera There

are several similarities. The eye is a physiological
optical instrument. The camera is a mechanical optical

instrument. The eye has a lens, and like the lens of a
camera, it forms an image on a light-sensitive surface
(fig. 4-1). The lens of the eye focuses light on the retina.

The camera lens focuses light on the film plane. The lens
of the eye focuses by changing its curvature, the camera
lens by changing its focal length. The diaphragm on a
camera is similar, like the iris of the eye. When the light
is bright, the iris closes down, reducing the brightness
of the image. Likewise, when the light is bright, the
camera diaphragm closes down When the light is dim,
the diaphragm opens up. The components of the eye are
held together by the sclera, the components of the
camera by the camera body.

A camera in its simplest form (fig. 4-2) is a lighttight

box with a lens to form an image, a shutter to control the
length of time light is allowed to act on the film, a

Figure 4-1.耶omparison of human eye to a camera.

Figure 4-2.耍 simple camera.

4-1

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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 -> CHAPTER 4 STILL CAMERAS AND CONTROLS Cameras have gone through many changes in design over the years. Several of your chiefs and division officers remember lugging around bulky, cumbersome 4x5 Speed Graphic cameras with film holders and tripods just to cover routine assignments. Through the development of modern-day cameras and film, small, hand-held cameras are commonly used. A large variety of cameras are available in the imaging facilities of the Navy. After learning the nature of your assignment and the equipment available, you must choose the equipment that will get the job done best, whether it be a 4x5 view camera or a small, hand-held electronic camera. The human eye may be compared to a camera There are several similarities. The eye is a physiological optical instrument. The camera is a mechanical optical instrument. The eye has a lens, and like the lens of a camera, it forms an image on a light-sensitive surface (fig. 4-1). The lens of the eye focuses light on the retina. The camera lens focuses light on the film plane. The lens of the eye focuses by changing its curvature, the camera lens by changing its focal length. The diaphragm on a camera is similar, like the iris of the eye. When the light is bright, the iris closes down, reducing the brightness of the image. Likewise, when the light is bright, the camera diaphragm closes down When the light is dim, the diaphragm opens up. The components of the eye are held together by the sclera, the components of the camera by the camera body. A camera in its simplest form (fig. 4-2) is a lighttight box with a lens to form an image, a shutter to control the length of time light is allowed to act on the film, a Figure 4-1.耶omparison of human eye to a camera. Figure 4-2.耍 simple camera. 4-1 contents Basic Photography Course <- previous page next page ->	As an Amazon Associate I earn from qualifying purchases.
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