Yoshizen's Blog

110 Pentax Lens on A7R

OMG, —– I found a EOS 620 body and a tiny Pentax 110 (both of them were broken junk state) for hefty £5 in the odds & ends box of the City Camera Exchange, Strand Shop.  (They got the best junk in London as well as the latest expensive cameras, and if you feel hungly, you can have the best lunch or dinner in the Simpsons, only few steps round a corner.)   😀

EOS body may be used as a display dummy for my (Canon mount) homemade lens, and the tiny 110 Pentax lens, should make a good fun to test it. 

To test this Pentax lens on Sony A7R body was very easy = just mount the tiny lens on an A7R body cap — Infinity focus was happened to be almost straight.  (but there is no Iris as the camera was designed to give an Auto-exposure by Aperture and the Shutter speed combined system.  = So, the lens works as a 24mm F2.8 only lens, and the focus works very well. (If your finger is small enough to pinch its small lens front)   😀

As the lens is rather bright F2.8 = focused depth is quite shallow yet still, the image where focused was very sharp and crisp.   Though, since the lens was designed for 110 Instamatic size, image circle doesn’t cover the 35mm full screen of course.   (and I wouldn’t attempt to make it Retro-focus with a concave lens to spread the image.)

Don’t to be fooled, even if the camera, lens were such small, like a children’s toy,  Pentax seemed to designed its lens with their full force. = image was such crisp = I would say, too prosaic !  The lens showed no chromatic aberration, in fact it got no aberration at all.  (May be in reverse use, lens may work as a pretty good macro lens. —– I’ll test it on future.)

Still, such small lens on the small mirrorless camera is very comfortable and CUTE ! = I wouldn’t complain the dark surroundings.  Its a own character and a part of fun.



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  1. 110 Pentax 24mm Lens (2) | Yoshizen's Blog said, on November 19, 2018 at 02:39

    […] realized that the tiny toy like Pentax 110 camera’s 24 mm F2.8 lens appeared to be very critical lens.  What I mean critical is, as it was designed by the Pentax, […]

  2. 110 Pentax 24mm Lens test | Yoshizen's Blog said, on November 21, 2018 at 08:30

    […] the Pentax design team, not many people has tested this lens on the camera body other than the very Pentax 110 Auto.  And the test result on the 110 Auto was of course by an Instamatic Caset film = may have […]

  3. Analog — Digital | Yoshizen's Blog said, on December 18, 2018 at 02:45

    […] and small body, I needed to use such device to stabilise the camera movement especially when I use almost weightless small Pentax 110 lens. —– that was the reason why Sony put the image stablizer in the body for their new […]

  4. […] Wide Angle Lens (Sony 12~24mm F4 Zoom).  And if the image has derker corner it was by the Pentax 110 auto 24 mm F2.8 Lens.   If the image got heavy anastigmat aberration, it was by a homemade So-called Helicoid-B […]

  5. […] the heavy lens would be fallen off, yet still, it works perfect with my homemade — such as 110 Pentax lens, Vest Pocket camera lens etc […]

  6. […] of top photo was Nikon mount Zeiss 18 mm F3,5 (at 5.6) on D850 and the photos below, the Left were Pentax 110 Auto 24 mm F2.8, the Right were So-called Omunifocus Fun lens about 28 mm F13.  The timings were as marked.  […]

  7. […] photos were taken by the homemade ZM2 lens or Pentax 110 24mm F2.8 lens on the Nikon […]

  8. First Reiwa Sky | Yoshizen's Blog said, on April 1, 2019 at 07:05

    […] And this is the same sky but a minuets before of the top photo by 110 Pentax 24mm on Nikon Z7. […]

  9. […] the photos here (except one) were taken by the 110 Pentax 24mm lens on the Nikon […]

  10. Beach Rose | Yoshizen's Blog said, on May 26, 2019 at 14:21

    […] photo above was taken by 110 Pentax 24mm lens on Nikon Z7 — rest of the photos here were taken either by Helicoid (B) or ZM-2 […]

  11. […] photo above was taken by 110 Pentax 24 mm lens on Nikon […]

  12. […] Resonance, Subconsciousness, Who is Yoshizen by yoshizen on July 10, 2019 Photo taken by 110 Petax 24 mm on Nikon Z7 Photo taken by a homemade so-called ZM-2 lens on Nikon Z7 By ZM-2 I don’t know […]

  13. Aster aster | Yoshizen's Blog said, on October 29, 2019 at 16:23

    […] left was taken by W lens-B and right was by 110 Pentax 24 mm lens on Nikon […]

  14. Fall or fallen | Yoshizen's Blog said, on October 31, 2019 at 19:28

    […] Canon 5D-MkIII — for indoor copy work etc. So, this one by their 40 mm lens. But, this one by 110 Pentax 24 mm with extension ring on Nikon Z7. To annoy you, this photo was by W lens-B on Nikon Z7. By W lens-B […]

  15. November Moon | Yoshizen's Blog said, on November 10, 2019 at 20:45

    […] Subconsciousness, Who is Yoshizen by yoshizen on November 10, 2019 Photo left was taken by 110 Pentax 24 mm lens (heavily croped) / Right was by Tamron SP 500 mm F8 (over the double grazed window, handheld on […]

  16. Morning Sky – Dec'19 | Yoshizen's Blog said, on December 11, 2019 at 12:00

    […] 110 Pentax-24mm 07:20 W […]

  17. F and M — Cats story ? | Yoshizen's Blog said, on December 24, 2019 at 17:20

    […] by a homemade “Fragmented Lens” (except few exception which got dark surroundings = 110 Pentax 24mm Lens) on Nikon […]

  18. Spring Equinox 2020 | Yoshizen's Blog said, on March 20, 2020 at 22:49

    […] on March 20, 2020 The photos here were taken by NZ-B lens on Nikon Z-7 But this one was by Pentax 110 24mm lens on Sony […]

  19. Macro shot ? | Yoshizen's Blog said, on May 3, 2020 at 15:46

    […] on the same setting, I tested it with the remotest possible lens = Pentax 110 Auto 24mm F2.8 lens === 24 mm lens image was far smaller than the 55 mm lens. Still, the enlarged image showed quite a […]

  20. Macro shots (2) | Yoshizen's Blog said, on May 4, 2020 at 03:02

    […] this post, all the shots were made by Pentax 110 Auto 24 mm lens on Sony A7R4. And looks like macro shots were the heavily cloped small part of the original […]

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