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  1. Re: Flip aperture lever 180 degrees on a Copal shutter

    To be very clear, I like the ergonomics of the cocking lever and the shutter release "upside down," but I like the ergonomics of the aperture lever right-side up.

    With the shutter "upside down,"...
  2. Re: Flip aperture lever 180 degrees on a Copal shutter

    Thanks. It's just a generic Copal #0 shutter of the latest model.

    However, based on photos I've seen of disassembled Copals, it seems the aperture mechanism sits behind a host of other parts and...
  3. Flip aperture lever 180 degrees on a Copal shutter

    Hello,

    Is there an easy way to flip (more precisely rotate) the aperture lever of a Copal shutter by 180 degrees, such that it goes to the "bottom" of the shutter, on the opposite side of the...
  4. Re: Cannot unmount front element from Sinar CMV Mount

    Thanks Jac. No screws visible from the outside.

    I've opened up the shutter and also don't see any screws keeping the front element in place.

    Attaching a couple of photos in case they help....
  5. Re: Cannot unmount front element from Sinar CMV Mount

    Thanks for replying Jim. Not yet. I've only used a rubber lid gripper. I wrote "rubber wrench" but it's really a lid gripper. A rubber wrench would be stronger I think.

    I am willing to try...
  6. Cannot unmount front element from Sinar CMV Mount

    I picked up a lens in Sinar CMV mount and am trying to remount it to a Copal.

    But the front element is stuck in place. A rubber wrench is no help.

    Does anyone know if there's glue or some kind...
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    Re: Seeking Advice for 4x5 Handheld Camera

    I was on a similar quest recently and ended up with a used copy of the Chinese 4x5 rangefinder "Sky Bow" with a 120 Apo-Symmar. I've been using it with Grafmatic backs for handheld street...
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    4x5 to 8x10 increasing back?

    Is there such a thing?

    I am looking at this and wondering what it does: https://www.ebay.com/itm/8x10-inch-increasing-camera-back-adapter-for-Rittreckview-Rittreck-view/401782118292
  9. Re: Film Holder Weight per Sheet Data - DDS, Grafmatic, Kinematic, others

    So what is the weight of a Chamonix wood/carbon fiber 4x5 film holder with film loaded?
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    Re: Xenotar 150 2.8 Projector Lenses

    Tracy, looking forward to your findings!
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    Re: Xenotar 150 2.8 Projector Lenses

    I mean this lens (and variants)
    https://www.bhphotovideo.com/c/product/43842-REG/Rollei_66876_150mm_f_2_8_AV_Xenotar_Projection.html

    Just out of idle curiosity really. I assume they aren’t the...
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    Re: 4X5 rangefinder from China

    Where are these threads on Photrio?
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    Xenotar 150 2.8 Projector Lenses

    Do the Xenotar 150mm f/2.8 projector lenses share the same optical design with the ones meant for large format photography?
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    Re: "Sky Bow" -- Chinese 4x5 rangefinder

    I think the "Cosmic Circle" options you're referring to (the subject of this thread) have been available on Taobao in China for a while. 58mm and 65mm go straight on. Above 65mm you use a helicoid.
    ...
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    Re: "Sky Bow" -- Chinese 4x5 rangefinder

    The Saber recycles the Polaroid 250's (and other similar models') rangefinder (reputedly made with Zeiss optics) and frame and folding mechanism.

    The Sky Bow is entirely a new construction except...
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    Re: "Sky Bow" -- Chinese 4x5 rangefinder

    Hi Ed, I am not sure about the base length. How do you measure it?

    Focusing indeed is done by directly pushing and pulling the front standard. Once in focus you release with your left index...
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    Re: "Sky Bow" -- Chinese 4x5 rangefinder

    Also I should note that it was priced only at CNY 4380 or so when it came out, about USD 640 at current exchange rates.
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    Re: "Sky Bow" -- Chinese 4x5 rangefinder

    There was even an 8x10 version (2.2kg body only) planned but never produced.

    I suspect if people write enough emails to Kangrinpoche this can be revived. As far as I can tell few people outside...
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    "Sky Bow" -- Chinese 4x5 rangefinder

    There was a brief thread here about the pinhole successor to the Sky Bow (or Celestial Bow...) that mentions the latter. The Sky Bow was distributed by Kangrinpoche but is now discontinued. Otherwise...
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    Re: www.chamonixviewcamera.com got a face lift

    Hugo also told me a couple of weeks ago they will build the Saber again with enough requests (and deposits).
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    Re: "Kinematic" 45 film holder

    Hello, are Kinematic and Grafmatic 4x5 septums interchangeable? Thanks
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