b. Shutter. The shutter has five automatically timed speed settings
plus time (T), bulb (B), and seven aperture settings. The shutter also
contains an internal synchronization mechanism and a press focus lever to
open and close the shutter to facilitate focusing.
c. Lens board. The lens board is provided to permit mounting the lens
assembly in the front frame of the camera. The front vertical movement
plate with the threaded shaft and shaft support, and the front horizontal
movement plate with the vertical gear and rack gear shift the lens board and
lens to position the image on the ground focusing glass.
d. Cable release. The cable release is provided for remote operation
of the shutter to permit making T, B, or instantaneous (I) exposures without
jarring the lens or causing camera movement.
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Description of Lighting System (figure 3)
The lighting system consists of a converter and two light assemblies.
a. Converter. The converter is used to manually or automatically
operate the light assemblies. The converter permits control of the light
assemblies to obtain even illumination and balanced color temperature over
the entire surface of the easel. One end of the 20foot POWER CORD is
permanently attached to the converter. When set up for operation, the
converter is secured to the rear of the cabinet by means of two converter
mounting screws.
b. Light assemblies (figure 3). The two light assemblies use standard
incandescent lamps (four 150watt incandescent lamps in each assembly). The
light assemblies are supported by a carriage assembly (two support arms)
that are secured to the front end block. Each light assembly has its own
15foot interconnection cable (light assembly cable).
EXERCISE
4.
The lens assembly includes the following items: ______________________
___________________________________________________________________________.
(complete sentence)
_______________
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