PowerPoint

Document Sample
PowerPoint Powered By Docstoc
					  CIS 105
 Computer
Fundamentals
  Section 2
 Cassidy Beth McNeill
PowerPoint Assignment
   Digital Cameras
The Definition of a Digital Camera
according to Wikipedia…
 A digital camera is an electronic device
 used to capture and store photographs
 electronically instead of using photographic
 film like conventional cameras. Modern
 compact digital cameras are typically
 multifunctional, with some devices capable
 of recording sound and/or video as well as
 photographs. Professional digital cameras
 are generally dedicated to photography. In
 the Western market, both types of digital
 cameras now outsell their 35 mm film
 counterparts.
There are several different
types of digital cameras
   Still
   Compact
   Prosumer
   Digital Single Lens Reflex
                       Still Cameras
   “Digital still cameras are cameras whose primary purpose is to capture
    photography in a digital format. Initially, a digital camera was
    characterized by the use of flash memory and USB or FireWire for storage
    and transfer of still photographs (though some early cameras used a serial
    port connection), and this is still the common meaning of the unadorned
    term. Many modern digital photography cameras have a video function,
    and a growing number of camcorders have a still photography function.
    However, even a low-end still camera can take far better still pictures than
    a mid-range video camera, and mid-range still cameras have much lower
    video quality than low-end video cameras. In addition, some newer
    camcorders record video directly to flash memory and transfer over USB
    and FireWire. Among digital still cameras, most have a rear LCD for
    reviewing photographs. They are rated in megapixels; that is, the product
    of their maximum resolution dimensions in millions. The actual transfers
    to a host computer are commonly carried out using the USB mass storage
    device class (so that the camera appears as a drive) or using the Picture
    Transfer Protocol and its derivatives, in addition firewire is becoming more
    popular and supported among more digital cameras.” (Wikipedia.com)
Example of a Still Camera
Compact Cameras
 “Also called digicams, this encompasses most digital
 cameras. They are characterized by great ease in operation
 and easy focusing; this design allows for limited motion
 picture capability. They tend to have significantly smaller
 zooms than prosumer and DSLR cameras. They have an
 extended depth of field. This allows objects at a larger range
 of depths to be in focus, which accounts for much of their
 ease of use. It is also part of the reason professional
 photographers find their images flat or artificial-looking.
 They excel in landscape photography and casual use. They
 typically save pictures in only the JPEG file format.”
 (Wikipedia.com)
Example of a Compact Camera
              Prosumer Cameras
“Prosumer cameras or extended zoom cameras form a general group of
higher end cameras that physically resemble SLR "professional" cameras and
share some features, but are still geared towards consumers. Thus, the name
prosumer from professional and consumer. These cameras tend to have a large
optical zoom lens, which compromises a "do it all" ability with barrel
distortion and pincushioning. Prosumer cameras are sometimes marketed as
and confused with digital SLR cameras since the bodies resemble each other.
The distinguishing characteristics are that prosumer cameras do not have a
removable lens (although accessory wide angle or telephoto lenses can be
attached to the front of the main lens), can usually take movies, record audio
and the scene composition is done with either the LCD display or the
electronic viewfinder (EVF). The overall performance tends to be slower than
a true digital SLR, but they are capable of very good image quality while being
more compact and lighter than DSLRs. The high-end models of this type
have comparable resolutions to low and mid-range DSLRs. Many of the these
cameras can save in JPEG or .RAW format.” (Wikipedia.com)
Example of a Prosumer Camera
Digital Single Lens Reflex Camera
“DSLRs are conceived for professional photographers and are well adapted for action
photography or specialized uses. They are based on film single-lens reflex cameras
and retain their main features : image composing done through the optical viewfinder
using a mirror reflected image and exchangeable lenses, albeit a few early SLR
digital cameras like the Olympus E-10 have a fixed lens. DSLR cameras have larger
image sensors than compacts or prosumers, and thus higher sensitivity in dim
lighting and less noise overall in the pictures they take. They usually are instantly on
and the autofocus and operation is faster. Most of them can save in JPEG and raw
formats even simultaneously. They are bulkier, heavier and frequently much more
expensive. Two characteristics many consumers are surprised to find due to the
reflex viewfinder is they cannot record movies and the screen is only for reviewing
pictures. All composing is done through the optical viewfinder which has more
resolution than an electronic viewfinder and does not produce any delay.”
(Wikipedia.com)
Example of a Digital Single-Lens
       Reflex Camera
Conclusion
   There are many different types of digital
    cameras available.
   Each camera is a different price and has
    different features.
   When purchasing a digital camera, be sure
    to select one that is appropriate for your
    photography needs.

				
DOCUMENT INFO