B4 Optical Correcting Adapter Design Progress January 2025

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  • Опубліковано 24 січ 2025

КОМЕНТАРІ • 44

  • @markcopley8976
    @markcopley8976 4 дні тому +1

    I can't wait. This will be an immediate purchase. Please keep us updated when they are available. The alternatives that are available lack a lot.

    • @jamesandcamera
      @jamesandcamera  4 дні тому +1

      I am glad you are keen. Hoping to get the design complete by March/April 🤞

  • @spencertorok
    @spencertorok 12 днів тому +1

    Still learning about the B4 world and lenses, but can't wait to see how this progresses. This will definitely be a no-brainer purchase.

    • @jamesandcamera
      @jamesandcamera  12 днів тому

      Thanks, keep an eye out for when the final available in the coming months 😊🤙

  • @davidbajer2389
    @davidbajer2389 16 днів тому

    Thanks for your work with these adapter James. I am looking forward to the final design.

    • @jamesandcamera
      @jamesandcamera  16 днів тому

      Thanks David, it will (hopefully) be worth the wait 😊🤞

  • @Lugo1993
    @Lugo1993 19 днів тому +3

    can‘t wait for the PL Version ! great work

    • @jamesandcamera
      @jamesandcamera  19 днів тому +1

      Hey Lugo, the PL version is likely not to be sold. I just made it as I had the parts laying around to combine. It was just something I was experimenting with to use up spare parts.
      If you wanted to make one yourself RA sell the B4-PL body and then you can get a BM B4 mount and remove the optics, and machine a collar to fit the optics in the RA housing. It's not an affordable option though, it may be cheaper to buy an Abakus 123 adapter than make the combination adapter.
      Sorry that adapter was more of a personal side project than something for sale 😔

    • @Lugo1993
      @Lugo1993 19 днів тому

      @ thanks for letting me know anyway! and thanks for the work you are putting in. The Adapter you recommend would be the „Abakus 132 Converter Lens - B4 Lens to Super 16mm PL Mount“ right?

    • @jamesandcamera
      @jamesandcamera  19 днів тому

      @Lugo1993 yep that's the one, I haven't used one myself, but it is functionally the same thing as my PL version I have shown here, just that the Abakus is a steel adapter where the RA body is just aluminium. There really isn't any affordable way to convert B4-PL optically corrected unfortunately.

  • @nilseberwein1637
    @nilseberwein1637 10 днів тому +1

    Hey, great work. Looking forward to the finished project. One question. What is the final lenght of the adapter? Looks quite a bit longer than the 48mm of the standard B4 Mount.

    • @jamesandcamera
      @jamesandcamera  10 днів тому +1

      Hey, yeah it's longer because the optics increase the flange depth required. 🔍

  • @xfinalchapterx
    @xfinalchapterx 20 днів тому +1

    looks great! look forward to get one in the future!

  • @chrisw443
    @chrisw443 18 днів тому

    Exciting news mate!

  • @alvyb.1229
    @alvyb.1229 13 днів тому +1

    Awesome work. Would it be possible to add a foot to the adadpter?

    • @jamesandcamera
      @jamesandcamera  13 днів тому +1

      Yeah for sure, I didn't mention it but in the background I have made a very niche specific adapter support for when the adapter is used with an FS7, but also a spacer sleeve which makes the adapter fit a generic off the shelf aluminium clamp on support foot designed for DSLR telephoto lenses. So yes once the adapters are available I will share the support options for mirrorless small body cameras as well as larger cameras 😊🤙

  • @y0shiii
    @y0shiii 20 днів тому +2

    Looks great. Can't wait to get my Hands on one of these. If you use a 3D Printer for some parts like for example the lens cap: Do you offer the files to print at home?

    • @jamesandcamera
      @jamesandcamera  19 днів тому +1

      Hi, no unfortunately I don't offer files for others to print. Maybe sometime in the future. The disc that slots into the lens cap I cannot share, as I have licenced the 🐝 icon used in it off an artist. Sharing it would be a copywrite issue.
      The old adapters had a rear half that was 3D printed, which was not as accurate dimensionally as I would like. So the new design is actually milled from solid plastic (and soon to be billet aluminium).
      3D printing was great to get basic working adapters and I encourage others to try design and make their own as it's not too hard to get working. but I have had a lot of people requesting a more professional full metal option with very tight tolerances. So I have had to leave 3D printing behind and mill the adapter parts instead.

  • @danieljmunoz3211
    @danieljmunoz3211 День тому +1

    Will you make this for Fuji X mount?

    • @jamesandcamera
      @jamesandcamera  День тому

      Eventually I will. I will need to get a hold of an X mount camera to calibrate the adapters for X mount. That is the only thing stopping me from making them as well 😊🤙

    • @danieljmunoz3211
      @danieljmunoz3211 18 годин тому

      @@jamesandcamera I just upgraded to an XH2S from an XT3. I still have some projects I need to finish with the XT3 but I maybe able lend it to you if that’s all you need. This may take a couple months though!

    • @jamesandcamera
      @jamesandcamera  16 годин тому +1

      @@danieljmunoz3211 Hey Daniel, its all good, I have a mate with an older Fuji X cam (I think XT-2) I just need to find some time to borrow his after I complete the E mount version. I will eventually have to buy an old X mount cam, as it will be the only way to QC each adapter as I make them. I am not too keen on selling adapters that I haven't checked on a camera.

  • @dirtystax284
    @dirtystax284 19 днів тому +2

    What would be estimated price for a b4-mft adapter looking forward to buy one when available so would like to save upp some money :)

    • @jamesandcamera
      @jamesandcamera  19 днів тому

      Hi, the new design has not been finalised yet, so it hasn't got a fixed price yet. But in terms of ballpark price it will be somewhere around $1k USD.

  • @gorankovacic
    @gorankovacic 14 годин тому +1

    What will be the price of adapter?

    • @jamesandcamera
      @jamesandcamera  7 годин тому

      Hi, price will be set once the design is fully finalised and the first batch of adapters is ready to sell. Keep an eye out for the post in a few months 😊🤙

  • @beccamitchell05
    @beccamitchell05 19 днів тому +1

    Would going to the PL adapter then adapting PL to E or MFT mount be too many adapter stacked together? I’ve heard double adapters get softer but I love the versatility of PL

    • @jamesandcamera
      @jamesandcamera  19 днів тому +1

      No stacking adapters won't cause softness. It is no different to the camera than a single piece adapter, as the tube of the adapter body is just there to set the lens and corrective optic at the correct distance from the sensor. Between a single adapter and stacked adapters they will still create the same required spacing. 😊👌

    • @beccamitchell05
      @beccamitchell05 19 днів тому

      @@jamesandcameragreat! It would be super cool to use the PL mount with the Mofage POCO drop in nd system with these types of lenses on something like the FX30. Thanks!

    • @jamesandcamera
      @jamesandcamera  19 днів тому

      @beccamitchell05 Ah I see where you are going with that thought process now. I had the same thought, and it would be an excellent combo. However... The corrective optics are very long and protrude waaaay deeper past the typical PL mount taper.
      I haven't tested the Mofage adapter specifically for clearance, but I would be pretty confident in saying the corrective optic would protrude into the area the filter slot goes, which won't work. 🙁 Bit of a bummer, I wish it could work too, I would be using that combo if it did work.

  • @НикитаКлюев-щ7т
    @НикитаКлюев-щ7т 15 днів тому

    I can't wait to buy this adapter for my Sony fs7
    but i have a question: why dont you make a hirose 12 pin out on the adapter itself?
    I read some reverse engineering forums about sony e and the voltage output on sony e pins are about 5v-7.4v, maybe there is a way to convert 5v->12v and add a hirose port ?

    • @jamesandcamera
      @jamesandcamera  15 днів тому +1

      It's a great idea, but it's well beyond my current skillset. Its hard enough just to make a strong concentric optically correct adapter 😅
      I think it may be too much of a faff about as even Sony doesn't use mount power for their fully integrated LAEB1 adapter. Might to too much current draw through the tiny ribbon cables in the mount too. The Hirose on lenses expect 12-15v (under or overcharged 14.8v V-mount batt)
      I am looking to design in a powered 12Hirose port on the adapter support for the FS7 adapter, but it's powered by a D-tap cable rather than through the E mount.
      I came up with the idea 6-7 months ago, it's just a matter of having time to implement it as with all my projects 😅
      I don't think anyone will be able to do better than Sony's own LAEB1, 1.4x optic, power to the adapter through external cable, power from adapter port to lens. E mount pins on the adapter transmit bi-directional data so you get real Iris, zoom and focus distance values in the stock viewfinder. The camera can also communicate for auto and push iris commands as far as I know.
      You can't really do better than that, it's just mega expencive that nobody can really afford to own one.

    • @НикитаКлюев-щ7т
      @НикитаКлюев-щ7т 13 днів тому +1

      ​@@jamesandcamerayeah, even rental houses in my country cant afford one, its not profitable, not to mention a cine school student
      anyway thank you for answering and putting in such hard work!
      i love your rig videos, can draw inspiration for my own fs7 build)

  • @lagrimasartificiales
    @lagrimasartificiales 19 днів тому +1

    Which estimated price you think couls have this model?

    • @jamesandcamera
      @jamesandcamera  19 днів тому

      No final price is set yet, the adapter is still finalising development, but an option will be available for approx. $1k USD. That is the plan anyway.

  • @andremalcolm_studio
    @andremalcolm_studio 19 днів тому

    Hello. May I ask what lens you are using for your top down recording?

    • @jamesandcamera
      @jamesandcamera  19 днів тому +1

      I used a focal length of 18mm f5.6 on an APSC camera. Using any kit zoom at its wide angle end will work just as well.

    • @andremalcolm_studio
      @andremalcolm_studio 19 днів тому

      @ thank you sir

  • @duymau1389
    @duymau1389 19 днів тому

    I want to buy b4 to emount product, do you sell it and how much is it?

    • @jamesandcamera
      @jamesandcamera  19 днів тому

      Hi, as I mention in the video it will be for sale in a few months time. Still finalising the design. Price will be set closer to the adapter being available 😊🤙

  • @washbuns
    @washbuns 19 днів тому

    is there a potential to buy the cad designs for those who already have an ursa b4 mount?

    • @jamesandcamera
      @jamesandcamera  19 днів тому +2

      No unfortunately not. The amount of R&D time and money I have put into this is crazy to think about. To sell the plans even once risks all that work I put in being copied by a cheap manufacturing company and me not being able to sell the adapters I put all that R&D time into creating.
      It would be like if Arri sold the plans to their expencive rigs, only for a cheaper company that had not done the R&D to use those plans and sell their own. Arri wouldn't be able to sell their rig parts after that.
      I wish we didn't live in a capitalist system so I could give plans away for free, but unfortunately it's not the world we live in 😔