Digital Photography & Imaging (Week 11)

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1/11/2021 (Week 11)

Liew Li Wei 0338076

Bachelor of Mass Communication (Hons) Digital Media Production
Digital Photography & Imaging (Minor)
Digital Photography (Exposure Setting)

LECTURE

Exposure Setting

  • In photography, exposure is the amount of light which reaches your camera sensor or film.

Figure 11.1: Exposure Setting


  • The main parts of the camera:
    1. Camera body:
      • Shutter
      • Image sensor
      • LCD screen
    2. Camera lens:
      • Aperture / Iris

Figure 11.2: Camera Parts


  • IRIS / APERTURE
    • is control the flow of light entering the lens.
    • is measured by f-stop, indicated by sequence of f-number:
      f/1, f/1.4, f/2 , f/ 2.8, f/ 4, f/ 5.6, f/ 8, f/ 11, f/ 16, f/22 , f/32...

Figure 11.3: Aperture Size

Figure 11.4: Difference of Aperture Size


  • SHUTTER
    • is a small plastic sheet that opens and closes to allow light onto the film or prevent light from reaching the film. 
    • is measured in seconds: 1/1000 s,1/500 s,1/250 s,1/125 s,1/60 s,1/30 s,1/15 s,1/8 s,1/4 s,1/2 s,1 s, 2 s, 3 s...

Figure 11.5: Shutter Difference 1


Figure 11.6: Shutter Difference 2

Figure 11.7: Shutter Difference 3


  • ISO
    • originally referred to the sensitivity of film—it's "light gathering" ability. 
    • for digital photography, ISO refers to the sensitivity—the signal gain—of the camera's sensor.
    • common ISO camera settings are: 100, 200, 400, 640, 800, 1600, 3200, 6400….
    • the lower the number of ISO the less sensitive your camera is to light and the finer the grain.

Figure 11.8: ISO Difference 1


Figure 11.9: ISO Difference 2


Lens Perspective

  • there are wide angle lens, standard lens and tele lens.
  • appropriate lens provided desire framing, lens choice affects angle of view.

Figure 11.10: Type of Lens

  • Focal Length: 
    • the shorter the focal length, the wider the angle of view and vice-versa. 
    • is the measurement (in millimeters) from the optical center of a camera lens to the camera’s sensor.

Figure 11.11: Focal Length Explanation

  • Depth of Field
    • the proportion of the image that is reasonably sharp and in focus.
    • the smaller the aperture you use, the greater the depth of field.

Figure 11.12: Depth of Field Difference


  • wide angle lenses are ideal for fitting a large area into your frame. 
  • wide angle lens is especially useful for landscape photography or street photography. With wide angle lenses, almost everything is in focus, unless your subject is very close to the lens.
Figure 11.13: Focal Length 18mm, 24mm, 35mm

Figure 11.14: Focal Length 55mm, 85mm, 105mm

Figure 11.15: Focal Length 135mm, 200mm, 300mm

Figure 11.16: Landscape with Wide Lens


TUTORIAL

In this week's tutorial, we are invited back to campus for a lighting workshop. We will explore the lighting technic, and take some photos using the lighting technic we learnt.


Figure 11.17: Photo of Myself


Figure 11.18: Photo of My Group (Cool)


Figure 11.19: Photo of My Group (Freestyle)


PRACTICAL

(we will be working on idea development for our project 4)


FEEDBACK

(no feedback given in this week)


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