ILLUM - About Exposure Modes - P, I, S, M

The camera has four exposure modes.  

  • The first letter of the mode you are using will display in both the exposure mode indicator in the Information Bar on the bottom of the screen, and in the Exposure Mode icon in the Menu Bar on the right hand side of the screen.
  • To change Exposure Modes, tap the Exposure Mode icon
  • The submenu will open, showing the four mode options  
  • The four Exposure Modes are:
    • P: Program: "Auto" mode, the camera sets ISO and shutter speed, you can adjust Exposure (EV) Compensation 
      • Use program if you don't want to worry about your exposure settings, and the camera will select them for you, giving you the best exposure possible automatically.
        • Real Dial - You can modify the auto selection via the real dial
        • Front Dial - Controls exposure bias; you can cycle though shutter speed/ISO combinations which don't effect your overall exposure.  You might want to do this if you like your existing exposure, but want to use a different shutter speed or ISO value.
    • I: ISO Priority Mode: Manually select your ISO and EV compensation, the camera will set the shutter speed
      • Use ISO priority in any situation where you want to control the ISO, but have the camera select the correct exposure.  You choose the ISO and the camera will choose a shutter speed to produce a correct exposure.
      • Recommended for low-light situations when you want to keep the ISO as low as possible to prevent noise.
    • S: Shutter Priority Mode: Manually select your shutter speed and EV compensation, the camera will set the ISO
      • Use Shutter Priority in any situation where you want to control the shutter speed, but have the camera select the correct exposure.  You choose the shutter speed and the camera will choose an ISO to produce a correct exposure.
      • We recommend using Shutter Priority when you have a moving subject or are hand holding your camera, especially if you are in a low light situation, to make sure the shutter speed is fast enough to stop action and prevent motion blur.
      • 1/60th is generally considered fast enough to stop a running person, and to prevent camera shake.
      • If you are using a flash, max sync speed will be 1/250th.
      • For long exposures, make sure you are on a tripod.  Generally, exposures longer than 1/60th will need to be on a tripod to prevent motion blur.
    • M: Manual Mode: manually set both your shutter speed and ISO (no EV compensation is available in Manual Mode)
      • Use manual mode when you want to control every aspect of your camera settings.  
      • You'll need to know how to correctly balance your shutter speed and ISO to get the correct exposure!  Use live preview, the exposure histogram, and instant review tools to help you make sure your exposures are correct.  
      • EV Compensation is not available in manual mode, since you manually are setting the exposure settings, you would over or under expose the image manually by adjusting the ISO or shutter speed settings to produce the same effect.

Why is there no Aperture setting or Aperture Priority Mode?  

  • The LYTRO ILLUM has a constant, or fixed, f/2.0 Aperture.  Because of the way the lens and optics works, the Aperture is fixed - it doesn't change.  
  • Exposure control that would traditionally be adjusted through aperture can instead be controlled via a combination of shutter speed and ISO
  • Aperture can be changed in Lytro Desktop 4, giving you the option to select a range of depth of field from very shallow to a fully in focus picture.  This also allows you to create animations in Desktop 4 that move from one focal point to another through your living pictures.

 

  • Tap on the letter option to select the exposure mode.  
  • The selected exposure mode will be displayed as the exposure mode icon as well as in the exposure mode indicator in the Information Bar.

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