Basics of Digital Camera
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Basics of Digital Camera

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Basics of Digital Camera Basics of Digital Camera Presentation Transcript

  • Photography in Education TECH2113 Dr. Alaa Sadik Department of Instructional & Learning Technologies www.alaasadik.net [email_address]
  • Part 2 Shooting Week 6 Basics of Digital Camera
  • Basics of Digital Camera
    • Key Concepts
    • Camera Controls
    • The Sensor (Charge-Coupled Device)
    • Pixels and Resolutions
    • Lens and focus
    • Shutter
    • Aperture (F Stop)
  • Basics of Digital Camera Camera Controls 1. Microphone 2. AF-assist Beam 3. Red-Eye Reduction Lamp 4. Self-Timer Lamp 5. Viewfinder Window 6. Flash 7. Terminal Cover
  • Basics of Digital Camera 8. A/V OUT 9. DIGITAL USB Terminal 10. DC IN Terminal 11. Ring 12. Lens 13. Ring Release Button
  • Basics of Digital Camera 1. Indicators 2. Power Lamp 3. Power Button 4. Zoom Lever 5. Shutter Button 6. Shooting Mode Dial 7. Mode Switch 8. Print/Share Button 9. Function/Set Button 10. Menu Button 11. Display Button
  • Basics of Digital Camera 12. Exposure/Erase Image 13. Browsing 14. Flash 15. Macro/Manual Focus
  • Basics of Digital Camera 1. LCD Monitor 2. Viewfinder 3. Speaker 4. Wrist Strap Mount 5. Memory Card Slot / Battery Cover 6. Memory Card Slot / Battery Cover 7. Tripod Socket
  • Basics of Digital Camera
    • The Sensor
    • A sensor is a device that receives a signal or stimulus (like heat, pressure, light or motion) and responds to it in a distinctive manner.
  • Basics of Digital Camera Charge-Coupled Device (CCD) A silicon semiconductor by which digital cameras capture their images.
  • Basics of Digital Camera
    • Charge-Coupled Device (CCD)
  • Basics of Digital Camera
    • Charge-Coupled Device (The Digital Camera Sensor)
    • Composed of a matrix of photo-sensitive points called photo-sites that capture photons (light) and converts them to electronic signal.
    • Use G o o g l e to find your own definition of CCD.
  • Basics of Digital Camera
    • Types of Sensors
    • Foveon Sensor
  • Basics of Digital Camera
    • Foveon Sensor
    • It uses a matrix of photo-sites, each of which consists of three vertically stacked photo detectors. Each of the three stacked photo detectors responds to different wavelengths of light (Red/Green/Blue)
  • Basics of Digital Camera
    • Types of Sensors
    • Array Sensor
  • Basics of Digital Camera
    • Types of Sensors
    • Array Sensor (Bayer’s Sensor)
    • It uses an array for arranging RGB color filters on a square grid of photosensors.
    • The filter pattern is 50% green, 25% red and 25% blue, hence is also called RGBG or GRGB.
  • Basics of Digital Camera
    • Pixels and Resolutions
    • A pixel (short for pic ture el ement) is the smallest single component of an image.
  • Basics of Digital Camera
    • Pixels and Resolutions
    • Each pixel has typically three or four dimensions of variability such as Red, Green and Blue.
    • The more pixels used to represent an image, the closer the result can resemble the original of an image.
  • Basics of Digital Camera
    • Pixels and Resolutions
    • The number of pixels per inch (ppi) in an image is called the resolution.
    • Image resolution describes the detail an image holds.
  • Basics of Digital Camera
    • Pixels and Resolutions
    • Pixel counts can be expressed as a:
    • single number (e.g. 3 Megapixel digital camera).
    • pair of numbers (e.g., 640 x 480 VGA display monitor), and therefore has a total number of 640 × 480 = 307,200 pixels or 0.3 Megapixels.
  • Basics of Digital Camera
    • Pixels and Resolutions
    • A megapixel is 1 million pixels, and is a term used not only for the number of pixels in an image, but also to express the number of image sensor elements of digital cameras.
  • Basics of Digital Camera
    • Lens and Focus
    • Object Distance
    • The distance from the center of a lens to the object.
  • Basics of Digital Camera
    • Lens and Focus
    • Focal Length
    • The distance from the center of a lens to a point where it focuses light (sensor) in mm.
    • Lens and Focus
    • The focal length determines a camera's field of view. The shorter the focal length, the wider the field of view.
  • Basics of Digital Camera
    • Shutter and Shutter Speed
    • Shutter is a mechanism in the camera that controls the amount of light that reaches the sensor.
  • Basics of Digital Camera
    • Shutter and Shutter Speed
    • Shutter speed is the length of time the shutter is open.
    • A typical shutter speed for photographs taken in sunlight is 1/125th of a second.
    • The agreed standards for shutter speeds are 1/1000s- 1s.
  • Basics of Digital Camera
    • Shutter and Shutter Speed
    • Very short shutter speeds are used to freeze fast-moving subjects.
  • Basics of Digital Camera
    • Shutter and Shutter Speed
    • Very long shutter speeds are used to intentionally blur a moving subject for artistic effect.
  • Basics of Digital Camera
    • Shutter and Shutter Speed
    • Very long shutter speeds are used to intentionally blur a moving subject for artistic effect.
  • Basics of Digital Camera
    • Shutter: Watch this
  • Basics of Digital Camera
    • Aperture (F-Stop)
    • Aperture is the size of the opening between the lens and the shutter that lets lights onto the sensor.
  • Basics of Digital Camera
    • Aperture (F-Stop)
    • Aperture range usually extends from f2.5 to f22.
  • Basics of Digital Camera
    • Aperture (F-Stop)
    • A small aperture is used when shooting in bright light and vice versa.
    • The smaller the aperture the slower the shutter speed, vice versa.
  • Basics of Digital Camera
    • Aperture and Shutter Speed
    • The smaller the aperture the slower the shutter speed, vice versa.
  • Basics of Digital Camera
    • Aperture and Shutter Speed
    • The smaller the aperture the slower the shutter speed, vice versa.
  • Basics of Digital Camera
  • Basics of Digital Camera
    • Aperture and Shutter Speed
    • Very deep
    • depth of
    • view
    • F- 8.0
  • Basics of Digital Camera
    • Aperture and Shutter Speed
    • Very shallow
    • depth of
    • view
    • F- 1.8
  • Discussions & Conclusions