WEEK 2

• Digital cameras


  Used to capture still pictures or take videos through the use of an electronic image sensor
• Optical system in digital cameras


  • Uses a variable length camera lens to focus light on the image capturing device
  • Length of the diaphragm and the shutter controls the amount of light utilized
• In digital camera, the image capturing device is an electronic device, whereas a chemical device was used in normal old age film cameras.
• Types of digital cameras


  • Point & shoot
  • Advanced point & shoot
  • SLR
  • Mirrorless
• Sony, Canon, Panasonic and Nikon are examples of the best digital camera manufacturers in today's market
• Camera types


  • Digital SLR (or DSLR)
  • Point-and-shoot
  • Bridge cameras
  • Camera phones
• There are 10 basic camera parts to identify in today's digital world
• Lens


  • One of the most vital parts of a camera
  • Light enters through the lens, where the photo process begins
  • Lenses can be either fixed permanently to the body or interchangeable
  • Lenses can vary in focal length, aperture, and other details
• Viewfinder


  • The area on the camera that you look through in order to compose your shot
  • For some cameras, an LCD screen is used as a viewfinder, or your camera may have the option to use either one
  • The viewfinder is not intended as a preview of your photo, but rather a tool to aid you in taking it
• AF Point

  • Indicates the position of the focus during AF (autofocus) shooting
• Aperture


  • The lens diaphragm opening inside a photographic lens
  • Regulates the amount of light that passes through onto the film inside the camera
  • Can be either a fixed or adjustable type
  • Aperture size is usually calibrated in f-numbers or f-stops
• Shutter release


  • The mechanism that "releases" the shutter and enables the ability to capture the image
  • The length of time the shutter is left open or "exposed" is determined by the shutter speed
• Body


  • The main portion of the camera
  • DSLRs tend to be larger bodied and a bit heavier, while other consumer cameras are smaller and can fit in a pocket
• Image sensor


  • Converts the optical image to an electronic signal, which is then sent to the memory card
  • There are two main types: CMOS and CCD
• Memory card


  • Stores all of the image information
  • The main types are CF and SD cards
• LCD screen


  • Found on the back of the camera body
  • Can be used for viewing photos after shooting, and some cameras have a "live mode"
• Flash


  • A device used in photography to produce a flash of artificial light to help illuminate a scene
  • Can be used to capture quickly moving objects or change the quality of light
• User controls


  • Vary depending on the camera model and type
  • Basic digital compacts may only have auto settings, while DSLRs have numerous controls for auto and manual shooting along with custom settings
• Shutter Speed- Indicates the time interval which the shutter is open.
• Aperture Value- This value indicates the extent to which the aperture blades inside the lens are open.
• ISO Speed- The ISO speed setting varies constantly when the Auto setting is selected.
• The 10 Basic Parts of a Camera

  
  

  1. Lens
  2. Viewfinder
  3. Aperture
  4. Shutter Release
  5. Body
  6. Image Sensor
  7. Memory Card
  8. LCD Screen
  9. Flash
  10. User Controls