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Advanced Exposure

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Transcript

  • 1. Advanced Exposure { Perfect Exposure by Michael Freeman}
  • 2. Bare Bones
    • Settings
          • Metering Mode
          • File Format
          • Instant Review
          • Highlight Clipping Warning
          • Histogram
  • 3. Bare Bones
    • Metering Method
          • Average
          • Center Weighted
          • Smart Predictive
          • Spot
  • 4. Bare Bones
    • What do you want?
          • What is the photograph about?
          • What caught your eye?
          • Know how bright you want the shot to be beforehand
          • Know how the light should be distributed
  • 5. Bare Bones
    • Likely Problems
          • Scan the scene for exposure issues
          • Is there a major hotspot?
            • Is that spot going to blow out and does it matter if it does?
          • Is the dynamic range too high for the camera to capture?
  • 6. Bare Bones
    • Key Tones
          • What is the important subject in the shot?
          • How bright should that subject be?
  • 7. Bare Bones
    • Is clipping likely? Is there a conflict?
          • Is there a conflict in how to expose?
          • You have a choice between changing the light or composition OR making a compromise on your exposure OR relying on special post-processing
          • For example: You are shooting a backlit portrait. You can have a silhouette, or a blown out background. What do you choose for that situation?
          • Compromise means that you accept either blown out highlights or blocked up shadows.
          • Post-Processing includes HDR, merging exposures, etc.
  • 8. Clipping
  • 9. Bare Bones
    • Apply Metering
          • Meter in your preferred method and take the shot
  • 10. Bare Bones
    • Review, Reshoot
          • Review your shot on your LCD
          • Reshoot if necessary
          • Think about if you have time to sit and check your shots on the LCD
          • Also think about zooming in on the LCD to check for focus and exposure
  • 11. Brightness and Stops
    • Think of exposure in terms of how bright the image is
    • Changing your stop increase and decrease your image brightness
      • Stop refers to your aperture or shutter speed
      • Stopping up refers to slowing down your shutter speed or making your aperture larger
        • This means you will have a brighter image
      • Stopping down refers to increases your shutter speed or using a smaller aperture
        • This means you will have a dimmer image
  • 12.  
  • 13. Exposure Terms
    • Luminance
      • The amount of light the reaches the sensor or eye
    • Illuminance
      • The luminous power from a light source
    • Reflectance
      • Effectiveness of a surface to pass on light
    • Brightness
      • The amount of light we see (the perceived luminance)
    • Lightness
      • Perceived reflectance
    • Value
      • In light measurement, value equals brightness
    • Exposure
      • In a camera, this is the amount of light allowed to fall on the sensor
  • 14. Exposure Terms
    • Over and Under Exposure
      • More of less than ideal exposure
    • Highlights
      • The upper end of the tonal scale, the light areas
    • Shadows
      • The lower end of the tonal scale, the dark areas
    • Clipping
      • Total loss of information in a pixel because of extreme over or under exposure
    • Black Point
      • The point of a tonal scale that is completely black
      • R-0 G-0 B-0
    • White Point
      • The point on a tonal scale that is completely white
      • R-255 G-255 B-255
    • Dynamic Range
      • The ratio between the maximum and minimum luminance
  • 15. Exposure Terms
    • Contrast and Contrasty
      • The ration between high and low luminance excluding the maximum and minimum
    • Key
      • Which part of the brightness range is being used
      • High or low key
  • 16. Dynamic Range
    • Low Dynamic Range
      • Diffuse lighting
      • Thick atmosphere (smog, fog, smoke)
      • Shooting away from your light source
    • Medium High Dynamic Range
      • Intense light source casting sharp shadows
      • Backlighting
      • Light and dark surfaces together
    • True High Dynamic Range
      • Light source or strong reflection in the frame
  • 17. Low Dynamic Range
  • 18. Medium Dynamic Range
  • 19. High Dynamic Range
  • 20. Contrast
  • 21. Metering
    • Reflective Light Meter
      • Like the one in your camera
      • Measure the light reflecting off of the surface you are photographing
    • Incident Light Meter
      • One choice on a handheld meter
      • Measures the light actually falling on the subject
      • Make sure to hold the meter very close to what you are shooting
  • 22. Metering Modes
  • 23. Gray Card
    • Gray cards reflect 18% of the light falling on a scene which makes them average or mid-tone
    • You spot meter on the gray card and use that reading to expose
    • Unfortunately your camera‚Äôs meter probably meters at 12-13% which means your exposure with a gray card may be a bit dark
  • 24. Bracketing
    • Stop up and down from your medium exposure
  • 25. Bracketing