Canon EOS RF/EF hybrid will have a moving sensor to support both flange distances, rumor suggests

Udi Tirosh

Udi Tirosh is an entrepreneur, photography inventor, journalist, educator, and writer based in Israel. With over 25 years of experience in the photo-video industry, Udi has built and sold several photography-related brands. Udi has a double degree in mass media communications and computer science.

If the rumors are correct, Canon is working on an EF/RF hybrid EOS mirrorless camera. Now, Canon Watch suggests that this camera will support a moving sensor. And when they say a moving sensor, they mean a sensor that sits on some kind of rails and can move to adjust between different flange distances.

While this is an interesting idea, there are a lot of “if”s in these rumors. The big “if”, of course, is the question of such a camera being developed. This is especially true with Canon re-committing to its Canon 1Dx line in recent Photoplus with a development announcement of the Canon 1Dx mk III.  Unless, in some weird way, the 1Dx mk III is that hybrid. With EOS-R to EOS-EF adapters for as low as $99 such a camera is not necessarily the best solution to the dual mount issue. I mean, Sony users are using a similar adaptor for ages.

There is another big “if”. Is a moving sensor is the optimal technology to gap the variance in flange distances.  Other solutions, engineering-wise,  may include optical inserts and a moving bayonet.

Canon Watch does not share their source, and just say that they “were told”. Without even a reference to the validity of the source in the past, it’s hard to estimate if this is a high-probability rumor or just someone having some fun.

What do you think? Is a Canon EOS RF/EF a real option or just a wild dream?

[via Canon Watch]


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Udi Tirosh

Udi Tirosh

Udi Tirosh is an entrepreneur, photography inventor, journalist, educator, and writer based in Israel. With over 25 years of experience in the photo-video industry, Udi has built and sold several photography-related brands. Udi has a double degree in mass media communications and computer science.

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42 responses to “Canon EOS RF/EF hybrid will have a moving sensor to support both flange distances, rumor suggests”

  1. Philip La Lumiere Avatar

    Yeah so….canon finally has my attention now. Only took them 5 years ?

  2. Juan Camargo Avatar

    Who would be the target market for this (assuming it is true)? If you are coming from EF to RF, you can do some kind of adapter to make it work. Canon could do an official one that is included with an RF camera and call it a day. If you are moving from RF to EF, well, dont know what to tell you… I can’t imagine there being that many going that route.

    1. Christopher Werrett Avatar

      Juan Camargo they come with an adapter on the box

    2. Peter Bjurström Avatar

      Juan Camargo the adapter exist already, the drawback with that is that it adds bulk to the ef lens due to the flange distance. If the sensor could compensate for that it will make the ef glass more compact on RF mount bodys. And when the biggest cost of a photographers gear is in the lenses this would have been great.

  3. Frank van Hoof Avatar

    Movement means more moving parts = more chances for something to get stuck or break = more reasons not to buy…

    1. Rafał Kusz Avatar

      Frank van Hoof of course coz You are amateur Nikon funboy :). you haven’t seen it yet but you already rate it :).

    2. Frank van Hoof Avatar

      Rafał Kusz wrong guess. But I’m in the game long enough to have seen a lot of bad ideas and this is nothing better.

    3. Yannick Chauvet Avatar

      Well. He is right. More moving part. More possibilities to have a problem.

    4. Daniel Tremblay Avatar

      I came here to say the same thing….but what about the mount itself which is different? And what about the electronic contacts….all different from EF to RF? ?

    5. Jesper Moldvik Avatar

      Dont want to be that guy but the Eos 1V also has it’s fair deal of moving parts, does that make it a bad camera?

    6. Frank van Hoof Avatar

      from a engineering perspective, yes. moving parts do wear out over time and break or become less accurate thuss limiting the lifespan of such camera. this is not a problem for the manufactorer as their main purpose is make you buy a new camera every 5 years or so but if you’re looking for a futureproof system you should choose one with the least amount of moving parts.

  4. Kryn Sporry Avatar

    Don’t see the point. They have an adapter, that should be good enough.

    1. Peter Bjurström Avatar

      Kryn Sporry the adapter works great, but it add bulk to especially small lenses. Ie on the 50mm 1.8 or 1.4 it adds 3cm which is about half the actual lens.

    2. Peter Bjurström Avatar

      Tom Kamín it really depends if the sensor is moving forward or backward, so maybe it will be created with more space behind the sensor. I guess we will see in the future, if it even is going to be reality. ?

    3. Petr Špetla Avatar

      And adapter protects sensor.

    4. Tom Kamín Avatar

      Peter Bjurström Even behind the sensor would make the camera much bigger. You’re not getting around that.

    5. Kryn Sporry Avatar

      In the end, simpler is always better than more complex. It’s cheaper, easier to design and build, and less likely to break or have operating issues.

  5. mark bohrer Avatar
    mark bohrer

    From an engineering reliability standpoint, makes absolutely no sense. Too many things to break in an overly-complex solution, especially when there’s a simple $99 adapter that does the same thing. I use both the basic $99 spacer with contacts and the $199 control ring adapter from Canon on an EOS R. Both work flawlessly with everything from TS-E 17/4L and TS-E 24/3.5L II to EF 400/4 DO IS and EF 500/4L IS. Both Sigma’s 14/1.8 Art and 24/1.4 Art work great adapted too.

    Extra moving parts in Leica M rangefinders are bad enough. Moving a sensor back and forth is just asking for trouble. My suspicion is this is one of those rumors that has Canon execs snickering and shaking their heads. And that’s why they call ’em rumors. They’re vapor until product release.

  6. Mike Zupancic Avatar

    The rumor is bullsh you know what. The mount is completely different. Its not just about sensor distance.

  7. Phillip Harpootlian Avatar
  8. Neil Barnes Avatar

    Utter crap this would be the Betamax of cameras

  9. Cedric Bicep Avatar

    If true, they could open up a juicy market by selling expensive and ground breaking RF lenses to die hard canon EF shooters, instead of making RF lenses for the 1%.

  10. Yannis Sotiriadis Avatar

    Another gimmick to break.

  11. Victor Ng Avatar

    more point of failure?

  12. Kleo Groutides Avatar

    This has been tried many times, the issue was the precision needed couldn’t be achieved even at low sensor resolutions.

    Think about it, micron precision alignment on three axes to keep the sensor flat on the focal plane… and then moving that sensor, then adding on IBIS.

    1. Dustin Lawson Avatar

      Keeping it flat is easy when you have IBIS, and the flange distance being 100% exact wouldn’t really matter anymore because of on-sensor autofocus.

      1. Miroslav Majstorovic Avatar
        Miroslav Majstorovic

        I think the problem isn’t tiny differences in flange distance (as you’ve mentioned, the on-sensor AF solves that), but potentially the sensor not being completely parallel to the lens mount.

        I’m guessing that would akin to using a de-centered lens, as the projected image isn’t being projected on a surface parallel to the plane of that projection. I don’t think that would make a camera unusable for most applications, given that probably the tolerances for lens mounts are greater that we may think, but for some high precision work it might be an issue and they certainly wouldn’t want to risk that.

    2. Kleo Groutides Avatar

      Dustin Lawson no the IBIS fixed part needs to be flat to the mount, that’s the point of reference for the IBIS itself… there is little tolerance on that.
      This is a manual step during manufacturing where they add the shims then fix it permanently.

      For 5-10MP the solution would probably work… but anything above there’s no way, your compromising IQ for no reason.

      For sure this would be a service center thing where the technician would make the mount swap…

  13. Stefan Keller Avatar
    Stefan Keller

    IBT would be possible
    In Body Tilt :-)

  14. johnny Avatar
    johnny

    Just cut down the price of the adapter to $20 ea. Problem solved.

  15. Chris Horsley Avatar

    Just something else to go wrong!

  16. Tom Lobos Avatar

    Bullshit i think, it is easier to move the lens through an Adapter, wich in this case may be more like interchangeable mount.

  17. Kiril Karaatanasov Avatar

    Why?

    There is a great adapter now….Why would anyone make or buy a camera prone to defect often….

  18. Brad Snyder Avatar

    sound s like the answer to a question nobody asked….

  19. Lawayne Kimbro Avatar

    Just another risk of failure or issues… I’d just stick with the adapter

  20. Jared Polin Avatar
  21. Morrie Mariani Avatar

    This ain’t happening…all crap

  22. Bojidar Organdjiev Avatar

    Really no one asked? OK I will… Dose it have two card slots?

  23. Dice Virtudez Avatar

    canon is killing it… dammmmnnn