Sharp thinking: Nikon creates selectable strength low-pass filter

Discussion in 'Digital Cameras' started by me, Sep 6, 2013.

  1. me

    me Guest

    me, Sep 6, 2013
    #1
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  2. me

    Alfred Molon Guest

    Well... there are a couple of questions:

    1. How good is the AA filter (ideal step filter or slowly falling
    filter)?

    2. Does the filter set automatically its strength or are you supposed to
    set the filter before each shot? Can be quite cumbersome thinking each
    time before a shot how much AA you need.
     
    Alfred Molon, Sep 6, 2013
    #2
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  3. me

    Sandman Guest

    Well... there are a couple of questions:

    1. How good is the AA filter (ideal step filter or slowly falling
    filter)?[/QUOTE]

    Well, it comes in two configurations amounting to four different setups,
    so there's bound to be some choice that fits most circumstances. But
    it's an interesting patent.
    How so? I mean, the camera has tons of settings that affects the image
    quality and result that isn't done automatically. And since the general
    consensus about an AA filter is that it's great for most shots except a
    few instances, where it can pretty much ruin a picture. So to be able to
    shot it off when making such a shot, that would be great!
     
    Sandman, Sep 7, 2013
    #3
  4. me

    Me Guest

    On 7/09/2013 8:07 p.m., Sandman wrote:
    I'd thought general consensus at the kind of pixel density that we have
    now, is that having /no/ AA filter is great for most shots, except in a
    few instances where not having an AA filter can pretty much ruin a
    picture (alaising - more than colour moire which seems to be able to be
    quite well controlled in raw conversion).
     
    Me, Sep 15, 2013
    #4
  5. me

    Sandman Guest

    I'd thought general consensus at the kind of pixel density that we have
    now, is that having /no/ AA filter is great for most shots, except in a
    few instances where not having an AA filter can pretty much ruin a
    picture (alaising - more than colour moire which seems to be able to be
    quite well controlled in raw conversion).[/QUOTE]

    Yeah, reading what I wrote, I must have had my thinking backwards, or my
    writing. I meant what you wrote. Sorry about that :)
     
    Sandman, Sep 15, 2013
    #5
  6. me

    John A. Guest

    Well, it comes in two configurations amounting to four different setups,
    so there's bound to be some choice that fits most circumstances. But
    it's an interesting patent.
    How so? I mean, the camera has tons of settings that affects the image
    quality and result that isn't done automatically. And since the general
    consensus about an AA filter is that it's great for most shots except a
    few instances, where it can pretty much ruin a picture. So to be able to
    shot it off when making such a shot, that would be great![/QUOTE]

    Or, when you're not sure, really need/want the shot, and don't have
    much time to get it, AA "bracketing"? :)

    I could see mixing the two shots in post when only a portion of the
    frame really needs AA.
     
    John A., Sep 19, 2013
    #6
  7. me

    John A. Guest

    The Pentax K3 does it differently, apparently, by leaving out the AA
    filter altogether and vibrating the sensor (or not) instead. (Sounds
    like they've been doing some brainstorming on what else they can use
    their in-body shake reduction mechanisms for.)

    http://www.us.ricoh-imaging.com/dslr/K-3_

    I wonder what other ways manufacturers will come up with to achieve
    the effect.

    JA
     
    John A., Oct 8, 2013
    #7
  8. me

    RichA Guest

    Pentax beat them to it, apparently.

    Ricoh has announced the Pentax K-3 - a 24 megapixel enthusiast APS-C DSLR.In addition to the higher pixel count, the range-topping camera gains a 27-point autofocus system and a more advanced 86,000 pixel metering sensor, compared with the K-5 II. Rather than offering versions with an without an optical low-pass filter, the company has found a way to selectively use the image stabilization system to mimic its effect. It also offers twin SD cardslots and USB 3.0 connection.
     
    RichA, Oct 8, 2013
    #8
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