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ILLUM - Shutter Speed

Shutter speed is the length of time that the camera's shutter will stay open to capture the image.  This controls the amount of light let into the camera, and the exposure of the image.

Shutter speed affects your picture in several important ways:

  • Use shutter speed to control subject motion: 
    • 1/60th of a second is the average minimum speed required to stop motion at the speed of a human walking or running
    • Faster subjects, like racing bicycles, will need faster shutter speeds to stop the action, usually upwards of 1/1000th of a second
  • Slower shutter speeds will cause motion blur when handholding the camera  
    • Use a tripod to prevent motion blur at shutter speeds slower than 1/30.
      • Handholding your camera will cause camera shake, which will make your images appear out of focus at slower shutter speeds.
      • The ILLUM has a standard 1/4"-20 tripod socket
      • If you don't have a tripod handy, use a table or other solid, stable object
      • You can brace your elbows against your body, creating a triangle shape, to give yourself a little more stability, like a human tripod!
  • There are two ways to control the ILLUM's shutter speed settings:
    • In Shutter Priority Mode and Manual Mode:
      • Set the shutter speed by tapping the shutter speed indicator in the information bar.
        • This will open a selection band across the screen
        • The current shutter speed will be in the center
        • Swipe left to increase the shutter speed (faster speed, shorter exposure) or right to lower it (slower speed, longer exposure)
        • Tap on any speed visible in the band to go to that speed
        • Double tap the selection band to select the desired exposure
        • Shutter speeds range from the longest exposure of 32 seconds to the shortest of 1/4000 of a second
        • Once you've selected the desired shutter speed, tap anywhere outside of the selection band to close it. 
        • A half press of the shutter will also close the selection band
        • A full press of the shutter will close the selection band and take a picture
    • You can also use the front dial on the camera to adjust the shutter speed while in Shutter Priority or Manual Modes.
      • The shutter speed indicator in the information bar will show the changing settings as you rotate the dial.