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Jim Chang

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About Jim Chang

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    Los Angeles, California
  • Interests
    Anamorphic lens, video production, indie films

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  1. Check the FVD-35A, which is designed for 35mm projection anamorphic scopes, like HIFI-2: https://www.rapidotechnology.com/products/front-variable-diopter/fvd-35a
  2. HI, Racer5, PM me on facebook, will send you the manual of 16A, it has instructions to adjust the drag force yourself. Best, Jim Rapido
  3. I have most of larger 35mm scopes, probably 20 of them. I like HIF-2, Bausch Lomb Attachment I, and Moller 63/2x, which are vintage look, the ISCO & Schneider are modern & cleaner looks. I am trying to shoot some tests of these scopes pairing with FVD-35A, stay tuned. https://www.rapidotechnology.com/products/front-variable-diopter/fvd-35a
  4. You don't need to modify it, just a little bit heavier than 16mm scopes. Pretty sharp lens.
  5. Mauri's fully assembled lens package with customized engraving. Check out Mauri's amazing work at: http://www.mauridgaliano.es/
  6. Just finished the first customized engraving metal jacket. More customized jackets & jackets for Bolex 16/32 & Kowa C35 are coming.
  7. Here are some pictures of the Rapido Front Metal Jacket with CoreDNA front mounted. Front Metal Jackets for Bolex 16/32, and Kowa C35/1.5X are coming very soon.
  8. Here is a picture from a customer of FMJ, he is using Kowa 8Z with CoreDNA. I will post more picture from other customers, who have customized the engraving on the FMJ. Stay tuned.
  9. This is developed for the people who like to build a definite professional looking anamorphic lens with Rectilux HardCoreDNA or SLRMagic Rangefinder. Customized engraving service is available, so you can put focal length & T stop engraving on the lens, like real cinema anamorphic lens does. Features: Exchangeable connection to Rectilux HardCoreDNA or SLRMagic Rangefinder Rail support bracket with ¼-20 screw mounting hole to use with SmallRig Quick Release Lens Support Build-in locking mechanism to prevent focus ring of the anamorphic lens from rotating S
  10. Hi, Hank, Here is the independent encoder unit, which can be rail mounted on the side to record rotational information of the focus ring. I also provide two controller packages for order, package A & package B. package B is the one without the motor unit, and it's part 0009 at http://www.rapidotechnology.com/home I can modify the controller parameter to work with your Berkey motor, I can also provide an additional motor cable connector, which you can wire it to your Berkeley motor. Thanks. Jim Rapido
  11. Hi, Hanks, The current motor cable connector in the Single Focus Solution is the 4 pin connector as seen below. I can provide you a cable with open wires at the end, and the pin layout, you can wire them to the Berkeley cable connector, by matching pin layout correctly. The current controller works fine with 12V stepper with max current around 1A. So only thing you would need is a special motor cable. I can provide that as an option to order. The price of the package without motor will be listed on the website too. :-), will update soon. Thanks for the input. Jim
  12. I certain can do that, but different stepper motors have different voltage & current ratings, it may not be compatible to the current controller, which could end up overheating your motor & drain up your battery very fast. If you really want to use the berkey motor, I would have to get a full spec of that motor & adjust parameters in the controller accordingly. btw, the current motor doesn't have encoder on it.
  13. Hi, Hanks, Thanks for the suggestions, really appreciated. I am working on an independent encoder unit, that can be mounted on the side to measure the rotation of the anamorphic focus ring. As you mentioned, this will help people with non-supported follow focus units. To work with non internal focusing taking lens, I plan to create an Adapter Housing connecting the V2 clamp's rear 77mm thread to the stationary part of the taking lens, so even the front element moves out, it will be hidden inside this Adapter Housing, A prototype design is undergoing for Helios 44-2 58mm f/2 l
  14. Introducing Rapido Single Focus Solution: http://www.rapidotechnology.com/ Test Video: https://vimeo.com/213997325
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