Google app for DOF effect in phone cameras.

Discussion in 'Digital Cameras' started by Alan Browne, Apr 18, 2014.

  1. Alan Browne

    Alan Browne Guest

    Alan Browne, Apr 18, 2014
    #1
    1. Advertisements

  2. Alan Browne

    Paul Ciszek Guest

    Paul Ciszek, Apr 18, 2014
    #2
    1. Advertisements

  3. Alan Browne

    Alan Browne Guest

    The Lytro uses a hardware level capture[1] that allows post processing
    to move the focus plane (though I think you have to set a DOFocus range
    (range resolution) before shooting). So a single point-in-time capture.

    The Google implementation takes several images in quick succession while
    the camera is in motion and from there the image analysis begins. In
    effect it is polygraphic capture from which the scene structure can be
    estimated.

    [1] from Wikipedia:
    Light-field photography (also known as plenoptic photography)
    captures the available light in a scene coming from more than one
    direction. It works by breaking up the main image with an array
    of microlenses over an image sensor. The camera software then
    uses this data to determine the general directions of incoming light
    rays.
     
    Alan Browne, Apr 18, 2014
    #3
  4. Alan Browne

    John Guest

    Both, just about as useless for decent photography.
     
    John, Apr 20, 2014
    #4
  5. Alan Browne

    Paul Ciszek Guest

    Someone claimed to have bought a Lytro and cut it open, finding a rather
    mundane low-res digital camera inside. Given the resolution of the
    camera and the focal length and the dimensions of the lens, it was
    essentially built to be in permanent hyperfocal mode. As for being able
    to "selectively focus" after the fact using the Lytro software, this
    expose pointed out that it is a simple matter to selectively *blur* an
    otherwise sharp image in software.

    I do not know if this "debunking" was later itself debunked.
     
    Paul Ciszek, Apr 24, 2014
    #5
    1. Advertisements

Ask a Question

Want to reply to this thread or ask your own question?

You'll need to choose a username for the site, which only take a couple of moments (here). After that, you can post your question and our members will help you out.