LYTRO ILLUM - Understanding Image Quality

Understanding Image Quality

The Lytro Illum captures light in a unique way that is unlike other cameras in the market.

Since we are evolving a new imaging technology that involves 3D capture we must balance traditional 2D image quality that users have become familiar with, and access to the 3D light field, which makes Lytro Illum image files so desirable and unique.

Below you will find responses to some questions and comments you might have:

  • What is the megapixel specification of the LYTRO ILLUM?
    • Light field imaging works differently then traditional photography and cannot be measured using the traditional megapixel specification users are familiar with in traditional digital cameras.  The Lytro ILLUM has a 40 Megaray CMOS sensor, if a 2D image is extracted from a living picture captured on the Lytro ILLUM it would be about 4 Megapixel in size.
  • Some of my subjects are sharper then others, why isn't everything sharp when I click on it?
    • The ability to change focus doesn't mean that everything in a living picture can be focused on in every shot.  The Lytro ILLUM works by capturing a refocusable range instead of a specific focus point.  This means that composing your shots now involves additional attention and thought for how this range will effect your ability to refocus and adjust your images later.  
    • By hitting the Lytro Button near the shutter release users will reveal a depth histogram on the LCD display that will assist them in determining the optimal focus range.  Like traditional focus, the refocusable range is adjusted using the cameras focus ring on the lens.  Adjusting the zoom ring will also change how subjects fill the focus histogram.
  • Some of my images have artifacts in them, can this be prevented?  How can I remove them from my living pictures?
    • There are a few situations where the sensor can sometimes not determine depth of an object properly.  This can result in artifacts that are distracting from the intended effect of a living picture.  To avoid artifacts we recommend capturing several pictures (ideally with different angles and focal lengths).  These issues are particularly problematic with very thin subjects such as a wire fence, and also with objects that are visually uniform at different viewing angles such as a blue sky.  To reduce the chance of artifacts when taking living pictures of objects like this users should get physically closer to the object (if possible) in order to have enough information to determine depth in the image.  
    • Click Here for instructions on removing depth map artifacts from your living pictures.
  • How large can I print images from a Lytro ILLUM?
    • Living pictures are meant to be viewed interactively in a digital format.  When seen this way users get the full 3D functionality of living pictures which includes refocusing, perspective shift, and the ability to tell a story through animation effects.  Users can export 2D .jpg or .tif format images at a specific focus for printing.  Using these files we have found that users have produced professional quality prints at sizes up to around 8"x10".
  • What are the technical specifications of the Lytro ILLUM?

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