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20 Cards in this Set
- Front
- Back
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Body
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The light-tight box that contains the camera's mechanisms and protects the light-sensitive surface (sensor or film) from exposure to light until you are ready to make a photograph
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Lens
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Focuses an image in the viewfinder and on the light-sensitive recording surface.
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Lens Elements
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The optical glass lens components that produce the image.
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Focusing Ring
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Turning the ring focuses the image by adjusting the distance of the lens from the recording surface. Some cameras focus automatically.
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Diaphragm
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A circle of overlapping leaves inside the lens that adjust the size of the aperture (lens opening). It opens up to increase (or closes down to decrease) the amount of light reaching the recording surface.
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Aperture Ring or Button
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Setting the ring or turning a commas dial determines the size of the diaphragm during exposure.
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Mirror
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During viewing, the mirror reflects light from the lens upward onto the view screen. During an exposure, the mirror swings out of the way so light can pass straight to the recording surface.
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Viewing Screen
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A ground-glass (or similar) surface on which the focused image appears.
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Pentaprism
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A five-sided optical device that reflects the image from the viewing screen into the viewfinder.
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Metering Cell
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Measures the brightness of the scene being photographed.
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Viewfinder eyepiece
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A window through which the image from the pentaprism is visible.
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Shutter
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Keeps the light from the recording surface until your are ready to take a picture. Pressing the shutter release opens and closes the ________to let a measured amount of light reach the sensor.
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Sensor
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A grid (usually called a CCD or CMOS array or chip) comprising millions of tiny light-sensitive electronic devices (photo sites) that record the image. The ISO (or light sensitivity) of the sense is adjustable, and is set into the camera by a dial or menu setting.
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Data Panel
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A display (most often an LCD screen) for such information as shutter speed, aperture, ISO, exposure an metering modes, and the number of exposures remaining on the memory card.
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Command Dial
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Selects the shutter speed, the length of time the shutter remains open. On some models, it also set the mode of automatic exposure operation. In some locations, called a thumb wheel or jog dial.
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Shutter Release
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A button that activates the exposure sequence in which the aperture adjusts, the mirror rises, the shutter opens, light strikes the recording surface and the shutter closes.
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Hot Shoe
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A bracket that attaches a flash unit to the camera and provides an electrical linking that synchronizes camera and flash.
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Mode Dial
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Set a manual or one of several automatic exposure modes. On film cameras, a crank to rewind an exposed roll f film may be located here. Most new film cameral rewind automatically.
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Cable connections
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Plug in cables that, for example, connect a computer or control the cameral remotely.
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Memory Card
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Store image files. May be erases and reused; capacity varies. Can be removed to facilitate transferring files to a computer or other storage device.
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