Third mirrorless APS-C lens patent from Pentax: 16-55mm f/3.5-5.6

By PR admin | Published: June 22, 2012

After the 18-70mm f/3.5-7.1 and 18-55mm f/3.5-6.7 lens patents, Pentax filed another patent in Japan for a 16-55mm f/3.5-5.6 APS-C mirrorless lens:

  • Patent: 2012-118431
  • Release date: June 21, 2012
  • Filing date: December 3, 2012
  • Zoom ratio: 3.30
  • Aperture: 3.6 - 5.8
  • Focal length: 16.22 - 53.51mm
  • Image height: 14.20mm
  • Back focus: 4.181mm
  • Lens length: 72.49 - 86.00mm
  • Lens design: 9 lens elements in 8 groups,
  • Internal focus

Related posts:

  1. Pentax 18-55mm f/3.5-6.7 mirrorless APS-C lens patent
  2. Second mirrorless APS-C lens patent from Pentax: 18-70mm f/3.5-7.1
  3. Olympus 8-20mm f/2.8-4 lens patent
  4. Pentax patent for a 70-200mm f/2.8 lens
  5. Pentax 12-24mm f/3.5-4.5 lens patent

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  • Warpig

    Nice that Pentax also creates time machines, filling a patent december 3, 2012.

    • Kevin

      I want to see the patent on that.

  • mythbuster

    7.1, 6.7,5.6… maybe in 2014 Pentax can produce a really fast lens

    • Sina

      I don’t know about you, but most very fast SLR lenses of the past belonged to Pentax and companies making lenses for Pentax SLRs …

      • mythbuster

        You are right, but I mean mirrorless zoom lenses. Regretably, is not only Pentax producing such slow lenses, (i.e. the kit zoom for Olympus OM-D).

        • Sky

          And Nikon. The best they got is f/2.8

          • Sky

            And that’s the prime lens (just one – like in the name of system). Zooms run around 3.5/3.8 at best.

          • http://erphotoreview.com viking79

            Compact mirrorless lenses are small aperture on the tele end, just how it goes if you want small size. The Nikon 1 lenses are really slow given the small sensor size.

          • http://twitter.com/#!/57thStIncident 57thStIncident

            The Pentax Q zoom is f/2.8-4.5 but considering the modest 28-75-ish equivalent range and dinky sensor one might wish it was better (like, say the 24-90-equiv f/2-3.3 of the LX-5).

            This really doesn’t extend to just mirrorless though — the same is true of SLR lenses. The typical 18-55/3.5-5.6 kit is MUCH smaller than the faster/higher zoom ratio lens upgrades. I think with mirrorless though people are perhaps a little less forgiving when it comes to bulk because size & weight are an important factor when choosing a MILC system vs. SLR.

  • Alex

    I doubt they would launch all those similar lenses… so, which one it’ll be?

  • Sahaja

    With that huge rear element close to the sensor this looks like it is for a mirrorless camera with a short flange focal distance (i.e. not a regular K-mount)

  • http://twitter.com/#!/57thStIncident 57thStIncident

    This one is a little more attractive if inexpensive, espec. if bundled in a K-01 (or successor) kit. Nice if a kit lens offers 16mm wide angle.

  • Every mm counts :)

    16mm is great for kit lens

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