• Members 300 posts
    Nov. 20, 2023, 8:49 p.m.

    I have to thank you for refreshing my old memories. It looks that my first "very scientific" lens comparison was a duel, Tomioka vs. Schneider!
    I did not know that until now I went through those Tomioka/Tominon sites. I really wait for your article.

    At that time, I was 16-17 years old, I had "only a Japanese" Yashica D tlr camera with Yashinon lens. I thought it was not good enought for me. I wanted something better, something "Made in Germany".

    Rolleiflex was too expensive, but one older friend from local camera club was selling his Rolleicord with Xenar. He loaned it to me for testing. I took several pictures of a same scene with different apertures from wide open to F22 with both cameras using the same tripod.
    I did not buy the Rolleicord. Yashica was so much sharper. Now I know the winner was Tomioka!

  • Members 861 posts
    Nov. 20, 2023, 9:28 p.m.

    Besides putting the finishing pieces on your spaceship computer, was there any other reason you might have taken this photo? Cleaning reasons, perhaps?

  • Members 1662 posts
    Nov. 21, 2023, 12:09 a.m.

    I think that's a manual version of HAL9000 with screw mount.... 😂

    Great idea and capture @TimoK and a very interesting lens. Schacht is one of the lesser known German manufacturers, but made some great lenses. I have a Schacht M-Travenar 50 mm f/2.8 for example - quite a good lens:

    live.staticflickr.com/65535/53178501221_86a426f68c_b.jpg
    Official Earth certificates
    by simple.joy, on Flickr

    How is your Travegar?

  • Members 1662 posts
    Nov. 21, 2023, 12:17 a.m.

    Very interesting! Do you remember which Yashica lens it was?

    A Xenar was one of my first manual lenses (a 105 bellows lens, still one of the most beautiful lenses I know in its simplicity...):

    SK_Xenar_105mm.jpg

    live.staticflickr.com/65535/51286893170_98db8c5bc3_b.jpg
    Love-letters
    by simple.joy, on Flickr

  • Members 300 posts
    Nov. 21, 2023, 12:06 p.m.

    No special reasons, I only was playing with my toys.😜

  • Members 300 posts
    Nov. 21, 2023, 12:19 p.m.

    In good hands it makes quite good pictures, I see!

    When I look at my old book ( Handbuch der Kamerakunde von Richard Grittner, printed 1958, not 1956) I see that Travenars are (mostly) Tessar/Xenar type triplets with four lenses. Travegars are simplier, three lens triplets. But it's quite a good lens used with 60MP sensor.

  • Members 220 posts
    Nov. 22, 2023, 7:38 a.m.

    Fascinating lens mystery. I know little about Tomioka, but will give some generic ideas about the inscriptions. 1. N.J.K. could be the initials of the main designer. 2. The red M could be copied from the German Meyer Optik Görlitz company. They used a red V to note their top performing lens designs. 3. Switching gears on the red M, Olympus used the alphabet to designate number of elements in a lens. E. Zuiko had five elements. Number of elements used to be a big deal. Some lenses only had 3 elements. Granted, M won't work for # of elements, but it could mean something else, like number of diaphragm blades. Just some thoughts. It would be neat to see the lens body. Did you mention what mount it was and why the aperture blades are missing? Your "Dried Up" image is excellent.
    Good luck and thanks for sharing,
    barondla

  • Members 300 posts
    Nov. 22, 2023, 3:17 p.m.

    I thought the red V did mean coated or multicoated lens like the red T in Zeiss lenses. Naturally those coated lenses were also the best performers!

    Some lenses only had 3 elements like my Travegar. I think the number of the elements is still important but not so important as in the old days before multicoating.

    Interesting that Olympus used Creek words to tell the number of elements. So did also Nikon but a little differently. I guess E.Zuiko comes from Creek character Epsilon, which is the fifth character in the Creek alfabets. Nikon called their five element lenses Nikkor-Ps. P coming from Creek numeral Pente or Penta.

    I don't know anything of Olympus, but I did read this interesting story: en.wikipedia.org/wiki/Zuiko , Thanks!

    Edit. Naturally all of those characters are Latin transcriptions of creek ones.

    I agree!

  • Members 220 posts
    Nov. 24, 2023, 2:25 a.m.

    This is a Fujinon 2.7mm F1.8 fisheye lens removed from an Axis Communications surveilance camera. It is a C mount lens with no adjustable aperture. Peolple were buying these years ago from a surplus company. They sent a complete camera, I had to disassemble it and remove the lens. The lens was very difficult to unscrew. Used penetrating oil and put it in the freezer to break loose the threads. Most other people's lenses unscrewed easily. Feared I was going to break it.

    I use the lens two ways. This photo is with an Olympus Pen E-PL1. It gives a completely circular image and requires a recessed C mount adapter for infinity focus. I work around the fixed focus by slightly screwing the lens in and out.

    This also fits the Pentax Q and Q7 (different sensor sizes) and gives a full frame fisheye. The Q C mount adapter is not recessed. Q can actually use D and M mount lenses with the appropriate adapters. Don't have those - yet! Not a bad lens for $69.
    P1012644berriesfuji2.7FE.jpg

    IMGP8173fujinonfisheye.jpg
    Thanks for looking,
    barondla

    P1012644berriesfuji2.7FE.jpg

    JPG, 424.4 KB, uploaded by barondla on Nov. 24, 2023.

    IMGP8173fujinonfisheye.jpg

    JPG, 169.6 KB, uploaded by barondla on Nov. 24, 2023.

  • Members 1662 posts
    Nov. 24, 2023, 10:28 a.m.

    Thank you very much for your thoughts! The main designer (or design unit) is a very interesting idea. While I would be surprised to have a (likely) japanese name written in english letters, the name of a business unit etc. could very well be.

    I recently remembered that red letters were not only used to indicate special coatings, but also for magnifications: Some specialized Zeiss lenses use a red M + a number (for example 2:1) for indicating the optimized magnification. Ultra Micro Nikkors by Nikon (for example M= 1/10) do the same. It's also possible that the M stands for Macro, as it was likely intended for a macro lens. The third option would be that Tominon was synonymous with a particular lens design within Tomioka at that time... in this case the M could stand for 'Model' and simply mean: This is a Tominon type lens (5 elements in 3 groups Xenotar design). Tomioka used Tominon for a variety of different designs, however it's not unfathomable that there might have been a clearer distinction at some point.

  • Members 1662 posts
    Nov. 24, 2023, 12:24 p.m.

    Very interesting lens and result. I would love to experiment with something like a fisheye lens as well, but so far no opportunity has come around. Have you tried cropping some shots like that? I'm sure they look interesting and quality also seems quite okay.

    I generally work a lot with (custom made) recessed lensboards on my bellows - it gives me a lot of options with lenses I wouldn't be able to use otherwise. Those lensboards have a M42 thread which is among the most versatile thread in terms of available adapters. There still are some lenses I wasn't able to find any good solution for yet.

    Here's one of my recent shots with a Tominon 25/1.8 TV lens (most likely from some CCTV application):

    live.staticflickr.com/65535/53348084515_d67f7e0252_b.jpg
    Monetary growth
    by simple.joy, on Flickr

    live.staticflickr.com/65535/53346201496_a65e926708_c.jpg
    A tiny thing, but not bad when used with a tube lens...

  • Members 220 posts
    Nov. 24, 2023, 6:10 p.m.

    IMGP7042fujinonFEspaceegg2.jpg
    Not sure where my text went. Pentax Q7 with Fujinon 2.7mm FE lens. It manages to fill the frame quite nicely.
    Thanks for looking,
    barondla

    IMGP7042fujinonFEspaceegg2.jpg

    JPG, 505.3 KB, uploaded by barondla on Nov. 24, 2023.

  • Removed user
    Nov. 24, 2023, 7:10 p.m.

    Asahi Lens Co., M42 Takumar SMC 24mm @f/8 on Sigma SD15:

    SDIM0373-RT.jpg

    SDIM0373-RT.jpg

    JPG, 5.4 MB, uploaded by xpatUSA on Nov. 24, 2023.

  • Nov. 24, 2023, 7:18 p.m.

    Wonderfully sharp in the centre, though it seems to go off on the sides, more so on the left than the right.

    I see you still have nice sun!

    David

  • Nov. 24, 2023, 7:18 p.m.

    What is trhe apparently spherical object?

    David

  • Members 220 posts
    Nov. 25, 2023, 2:06 a.m.

    It is the end of a hotdog shaped 500 gallon propane tank. Tried to hide all the evidence.
    Thanks,
    barondla

  • Members 220 posts
    Nov. 25, 2023, 3:33 p.m.

    Very nice macro picture. Amazingly sharp considering the lens wasn't designed for extreme macros. I enjoy shooting different formats. On your camera this lens is a macro. On my Pentax Q it acts like a ~ 135mm telephoto.
    Thanks for sharing,
    barondla

  • Members 1662 posts
    Nov. 25, 2023, 3:39 p.m.

    That's really cool - excellent idea and well done!