Basic Photography Course

Figure 4-4.Design of a typical SLR camera.

produce negatives that range in size from 35mm to 8x10
inches. You will learn to choose the camera that best
meets the conditions of your assignment and the
customer's photographic requirements.

The number and types of cameras available at an

imaging facility depend primarily on the mission of the

facility. All cameras have common features. Once you
become familiar with the operation of one camera, you
can learn quickly to operate other types. There are three
general categories of cameras: small format, medium
format, and large format.

is reflected to a viewing screen for focusing and
composition. This allows you to see what the lens sees
regardless of the lens focal length or the lens-to-subject
distance. The reflex system is simple and reliable. It has
three main elements: a hinged mirror, a matte focusing
screen, and a five-sided glass prism called a pentaprism
The mirror, in the viewing position, is below the viewing

screen and behind the lens. It is at a 45-degree angle and
projects the image formed by the lens up to the focusing
or viewing screen. The pentaprism reflects the image
from the focusing screen, so you can see it in the camera
eyepiece. Figure 4-4 shows the design of a typical SLR
camera.

SMALL-FORMAT CAMERAS

Cameras that produce negatives smaller than 35mm

are considered small-format cameras. Small-format
cameras are preferable when you need maximum
freedom of movement and a large number of negatives
without reloading the camera. The accessories, lenses,
and flash equipment can be carried easily, and
commonly 36 frames may be taken rapidly without
reloading the film. This type of camera is helpful for
news and action photography where several pictures
must be taken in a short time from various ranges and
under varying light conditions. The primary
disadvantage of small-format cameras is they produce

small negatives. The smaller the negative, the more it
must be enlarged in printing.

When the shutter release is pressed, the mirror

swings up and out of the light path, so the light can reach
the film. It also seals off the viewfinder, so light entering
the eyepiece cannot reach the film. After the film is
exposed, the mirror swings back down, and the image

is visible again in the viewfinder.

CAUTION

The reflex mirror is thin glass coated on the

front with silver, so care must be taken not to
damage it by touching or scratching it. Follow
only the procedures listed in the Planned
Maintenance System (PMS) for cleaning
camera mirrors.

The most popular professional small-format camera

Almost all 35mm cameras have focal-plane

is the 35mm single-lens reflex (SLR). This camera has

shutters. Focal-plane shutters simplify the construction

a mirror in the path of the image formed by the lens that

of the camera and make interchangeable lenses smaller,

4-3

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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 4-4.Design of a typical SLR camera. produce negatives that range in size from 35mm to 8x10 inches. You will learn to choose the camera that best meets the conditions of your assignment and the customer's photographic requirements. The number and types of cameras available at an imaging facility depend primarily on the mission of the facility. All cameras have common features. Once you become familiar with the operation of one camera, you can learn quickly to operate other types. There are three general categories of cameras: small format, medium format, and large format. is reflected to a viewing screen for focusing and composition. This allows you to see what the lens sees regardless of the lens focal length or the lens-to-subject distance. The reflex system is simple and reliable. It has three main elements: a hinged mirror, a matte focusing screen, and a five-sided glass prism called a pentaprism The mirror, in the viewing position, is below the viewing screen and behind the lens. It is at a 45-degree angle and projects the image formed by the lens up to the focusing or viewing screen. The pentaprism reflects the image from the focusing screen, so you can see it in the camera eyepiece. Figure 4-4 shows the design of a typical SLR camera. SMALL-FORMAT CAMERAS Cameras that produce negatives smaller than 35mm are considered small-format cameras. Small-format cameras are preferable when you need maximum freedom of movement and a large number of negatives without reloading the camera. The accessories, lenses, and flash equipment can be carried easily, and commonly 36 frames may be taken rapidly without reloading the film. This type of camera is helpful for news and action photography where several pictures must be taken in a short time from various ranges and under varying light conditions. The primary disadvantage of small-format cameras is they produce small negatives. The smaller the negative, the more it must be enlarged in printing. When the shutter release is pressed, the mirror swings up and out of the light path, so the light can reach the film. It also seals off the viewfinder, so light entering the eyepiece cannot reach the film. After the film is exposed, the mirror swings back down, and the image is visible again in the viewfinder. CAUTION The reflex mirror is thin glass coated on the front with silver, so care must be taken not to damage it by touching or scratching it. Follow only the procedures listed in the Planned Maintenance System (PMS) for cleaning camera mirrors. The most popular professional small-format camera Almost all 35mm cameras have focal-plane is the 35mm single-lens reflex (SLR). This camera has shutters. Focal-plane shutters simplify the construction a mirror in the path of the image formed by the lens that of the camera and make interchangeable lenses smaller, 4-3 4-3 contents Basic Photography Course <- previous page next page ->	As an Amazon Associate I earn from qualifying purchases.
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