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areohbee
areohbee
Legend
June 20, 2011
Open for Voting

P: Focus mask / image sharpness

  • June 20, 2011
  • 45 replies
  • 4027 views

Like a topographical map, except instead of showing altitude, show sharpness/in-focus-ness.Would allow one to see at a glance where the focal plane lies, and how well focused is the photo at the focal plane (and everywhere else), and what is the depth of field.PhaseOne took a whack at this in CaptureOne. I think their implementation has some weaknesses: shows focal plane, but no indication of how well focused at the plane, and gives no sense of depth of field, but is still quite useful.See http://feedback.photoshop.com/photosh... for a related idea, that would go nicely with this one.If you like this idea, please remember to click the '+1' button below.

    45 replies

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    Sean H [Seattle branch]
    Sean H [Seattle branch]
    Known Participant
    October 16, 2011
    For that, I think you just need to look at the spatial frequency response of the image or subimage.
    [ ◉"]
    Royi A
    Royi A
    Inspiring
    October 16, 2011
    It can be done using 1 image only. Though results are inferior.
    The OP, and I for that matter, are not after accurate map of distance from the camera. We're after a measurement of Focus Level / Sharpness. This can be done using single photo.
    Sean H [Seattle branch]
    Sean H [Seattle branch]
    Known Participant
    October 16, 2011
    It can be done if you have a stereo setup...
    [ ◉"]
    Royi A
    Royi A
    Inspiring
    October 16, 2011
    I'd like Photoshop to have a "Depth of Field" filter which creates a mask according to the distance (Which is evaluated relatively to the "Focus").
    It can be done.
    samuelm64545694
    samuelm64545694
    Participant
    August 26, 2011
    It would be nice if Lightroom could calculate image sharpness (as in, camerashake) programmatically.

    This would help my workflow because there are frequently cases where I took several copies of a shot at slow shutter speed, and want to see which is the sharp one, without having to manually compare them. (I would also like a quick way of spotting 'blurred' shots right away in general.)

    It could be a number ('on a scale of 1 to 100, how sharp is the sharpest bit of the picture'), which you could set to appear as a badge on the image thumbnail, or else a visual display such as a colour-map of which areas are sharp (green = really sharp, red = soft, or something like that). The latter could also indicate what's in focus. Should be available from the main library screen so you don't have to look at the photo to see how sharp it is.

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