skip to Main Content

Tanaka is sure recent MFT models have no AA filter.


As you know recently Olympus France first confirmed than denied the fact that the latest MFT models may have no AA filter. So is the story over? Nope! Well connected Olympus photographer Tanaka now says (via Twitter) that his sources told him that “recent Olympus cameras” have no AA filter.

Confusions is back!

  • Fish

    Do you get the impression that this includes the E-M5, or just the PENs that followed it?

    • Homer

      No, just anything made by sony, not olympu shit.

      • homer

        Why are you using my name to post Sony fanboy crap?

        • Homer

          Are you suing my name or am |i using your name or are we using our name? i think you’re a douche. Is that me or you or them or it? LOL

        • Homer

          Not that there is anything wrong with that. I hope you live a happy life.

    • Homer

      anyways, you’re an idiot fanboy nuff said you numbnut. All hail the homer.

  • “Maybe, maybe not.”

    Actually, the precedent says that bodies without AA filter cost a little extra, and I’m sure Olympus wouldn’t want to miss out there.

    • Anonymous

      > Actually, the precedent says that bodies without AA filter cost a little extra

      which precedent ? D800E is not the case, it has the 2 layers of AA material arranged so that the 2nd layer is cancelling the bifrigent effect of the 1st layer… it is not exactly the same as no AA filter…

      • Anonymous

        sorry, spelling correction, shall be “cancelling the birefringent effect”

      • Anonymous

        now i love talking to myself. im pathetic. lol

  • Does it really matter? Recent comparisons (D800E, K-5IIs) reveal negligible differences. Besides, only a few lenses are good enough to show any effect at all.

    • homer

      The k5IIs is much sharper than its counterpart with AA filter

      • I can hardly spot a difference at 100% screen viewing so surely prints, even very large ones, would look identical. Moreover, in principle the benchmark for detail (and other variables) is set by the viewer of the actual photograph and not by the results which would have been obtained hypothetically using alternative tools.

        • Koseng

          Do you own both K5 and K5IIs? I do. And I can tell you that K5IIs is significantly sharper, especially when using sharp prime lenses.

          • I don’t own either so I’ll trust your word. Thank you for enlightening me.

          • Anonymous

            > Do you own both K5 and K5IIs? I do. And I can tell you that K5IIs is significantly sharper, especially when using sharp prime lenses.

            but that could simply mean that K5 has a strong AA filter, that’s it – so you are comparing not with a weak filter… you know that you can manipulate the strength of AA filter by using the different thickness of birefringent material in both layers (hence you can make AA filtering stronger in one direction vs orthogonal one)

            • Feebs

              Are you still around with your racist trolling rants? Admin , get rid of this clown already.

      • john

        Placebo effect

        • Anonymous

          > Placebo effect

          you can’t call a visual impression a placebo effect.. even if you have false resolution (artefacts) that still works towards the goal :-)… in the end photography is about making a certain visual impression, so if it is achieved through artefacts then so be it.

    • BdV

      It only matters if you want to remove it. Knowing it’s there: give it a try. Knowing it’s not there: don’t bother.

  • homer

    its believable, the files are sharper than the GH2 and GH3 so far in my experience

    • Anonymous

      But is that down to AA filter or Sony v Panna sensor difference???

    • Anonymous

      GH2 and GH3 are also intended for video use, so they could just have stronger AA filter… your logical error is that you do not understand the difference between 3 cases “not having AA filter at all”, “having self compensating layers of birefringent material like D800E”, “having weaker AA filter vs stronger AA filter”.

  • Sören

    I have problems with moire quite regular when shooting
    dragonfly compound eyes.

    • Lily

      I get moire regularly as well.

      • Anonymous

        having AA filter does not eliminate moire 100%, it just reduces it… so you can have it and moire based on a particular situation (patterns present in your subject, lens, no mirror/shutter shock to blur, etc)… I had moire with GH2, GH3 and Pentax Kx cameras… all w/ AA filters

        • Anonymous

          correction, “it just reduces it” -> “just reduces the chance to get it”

      • Anonymous

        You probly get diarrhea regularly as well you idiot.

  • Martin

    If the lenses were good enough, this would be extremely easy to verify or falsify: Take a test pattern close to the Nyquist frequency and look what happens when you get a bit farther away, i.e. go towards and beyond the Nyquist frequency. If resolution simply cancels out then it has an AA filter. If ugly alias patterns occur then it hasn’t (or at least one that has too high a bandlimit to reasonably be called an AA filter).
    The only reason that test may fail would be that the resolution of the lense does not even come close to the pixel pitch, in which case the whole discussion is a non-issue.

  • The truth must be located between the two: a reduced aa filter…


    • Tom

      I agree, given the applauded pixel-to-pixel strength of the E-5, I’d imagine that they’ve continued with that technology – rather than ditch an AA altogether.
      i.e, weak low-pass filter complimented by moire reduced in camera/software. Kodak were doing this years ago with reasonable success. Algorithms improve and processor design has come along way since then so it’s sensible enough.
      Next advancement should be temporal noise reduction, given the live-view/video nature of MFT et al it should be possible for stills. AA filters just don’t offer a huge improvement due to Bayer interpolation, trivial and dull…

  • petreh44

    why not rip one camera appart and make sure?

    i mean every new gadget gets torn to piece to look what is inside these days.

    and there are sure a few broken MFT cmaeras…..

  • Per K

    Comparing Nikon D800 and D800E there is a clear difference in the out of camera files. However with careful post processing, the difference is smaller. It is noticable that in both cases PP is essential for detail and sharpness!
    Guess a non AA filter m43 camera will be similarily a bit better. Noticable? Will depend on what kind of subject – and your PP skills.

  • Don Pope

    It obviously doesn’t matter that much if people haven’t noticed it.

  • Ranger 9

    It’s amazing how, whether in politics or photography, enough online hype can make people want something that’s actually bad for them.

    Aliasing is undesirable, and it’s better to prevent it from occurring in the first place (via an AA filter) than to try to fix it afterward in software (which unavoidably causes artifacts.) Yet photographers so passionately believe the opposite that they are willing to pay extra for cameras modified to produce aliasing, and to salivate excitedly over the possibility of more cameras with the aliasing “feature.”

    It’s as if people stampeded to buy a food whose manufacturer began advertising, “Now with less nutrition!”

    Of course many aliasing fans enjoy mistaking their cameras’ image artifacts for “more detail,” but there’s no reason to follow them off the cliff…

    • > Yet photographers so passionately believe the opposite […]

      Sharpness is the current fad in the photography.

      If you reduce IQ to sharpness alone, then AA filter is “bad.”

    • > Of course many aliasing fans enjoy mistaking their cameras’ image artifacts for “more detail,” but there’s no reason to follow them off the cliff…

      I once tried to explain to several photogs what is and how does demosaicing works. It all fell of deaf ears: too much math. The knowledge that the colors are often faked – almost 100% faked w/o AA filter – simply doesn’t want to sink in.

      I personally hopeful that Foveon-like sensors would arrive sooner than later. That would solve the problem once and for all.

  • The E-M5 has tremendous detail-rendering capability——stills and video. That’s all that matters to me!

  • > Tanaka is sure recent MFT models have no AA filter.

    Shoot the B/W resolution chart and check output of the camera for non-B/W colors around small features of the chart.

    As demosaicing algorithms were improving, pretty much all cameras this days are having relatively weak AA filter.

    DPR has the shots from the resolution charts in their reviews.

    D800E v. D800, at different f-numbers:

    Ideally, with suitable AA filter, the areas should have become simply gray and showed no features at all, least colors.

    • Anonymous

      Algorthms blah blah blah, just learn how to shoot a damn picture man. You’re some pc nerd with a camera looking for menus, just shooo the photos man. jeeezus.

Back To Top

By continuing to use the site, you agree to the use of cookies. more information

The cookie settings on this website are set to "allow cookies" to give you the best browsing experience possible. If you continue to use this website without changing your cookie settings or you click "Accept" below then you are consenting to this.

What are Cookies?
A cookie is a small file of letters and numbers that is stored in a temporary location on your computer to allow our website to distinguish you from other users of the website. If you don't want to accept cookies, you'll still be able to browse the site and use it for research purposes. Most web browsers have cookies enabled, but at the bottom of this page you can see how to disable cookies. Please note that cookies can't harm your computer. We don't store personally identifiable information in the cookies, but we do use encrypted information gathered from them to help provide you with a good experience when you browse our website and also allow us to improve our site. You can watch a simple video from Google to find more information about cookies.

Cookies used by our Website
The 43rumors website,, uses the following cookies for the collection of website usage statistics and to ensure that we can . These are anonymous and temporary. By using our website, you agree that we may place these types of cookies on your device.
Read how Google uses data when you use our partners' sites or apps:
Google Analytics Cookie Usage on Websites: Addthis cookies:
Disqus cookies:
Vimeo cookies:
Youtube cookies:

Disabling/Enabling Cookies
You have the ability to accept or decline cookies by modifying the settings in your browser. Please note however that by deleting our cookies or disabling future cookies you may not be able to access certain areas or features of our site. For information about how to disable cookies in your browser please visit the About Cookies website.