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    Patent: Canon RF 24mm f/1.4L and Canon RF 35mm f/1.4L

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    patentrf2414 - Patent: Canon RF 24mm f/1.4L and Canon RF 35mm f/1.4L

    A patent application for some wide-angle fast prime optical designs has been uncovered by Canon News.

    Included in this patent are optical formulas for an RF 22mm f/1.4L USM, RF 24mm f/1.4L USM, and an RF 35mm f/1.4L USM, We have seen multiple patents for both the RF 24 f/1.4L and RF 35 f/1.4L, but keep in mind that we have also seen patents for an RF 35mm f/1.2L USM, which appears on our Canon RF lens roadmap.

    I feel like I'm beating a dead horse, as lots of lens announcements have been delayed for obvious reasons. I have no timeline for any of the lenses on the roadmap, but I do expect Canon to have a lot of lens announcements in 2022. Canon is also probably making the right call on delaying announcements that they cannot manufacture to the levels of demand.

    Of all of these optical designs, I do believe that the RF 24mm f/1.4L USM is the most likely lens to hit the market in the future.

    There have also been patents for an RF 28 f/1.4L USM, which is what I want in case you haven't been paying attention to my incessant whining for one.

    Japan Patent JP2021-113905

    Canon RF 35mm f/1.4L USM

    • Focal length: 35.00mm
    • F number: 1.42
    • Half angle of view: 31.73°
    • Image height: 21.64mm
    • Lens total length: 126.05mm
    • Backfocus: 11.06mm

    Canon RF 24mm f/1.4L USM

    • Focal length: 24.17mm
    • F number: 1.42
    • Half angle of view: 41.83°
    • Image height: 21.64mm
    • Lens total length: 124.64mm
    • Backfocus: 11.06mm

    Canon RF 22mm f/1.4L USM

    • Focal length: 22.00mm
    • F number: 1.42
    • Half angle of view: 44.52°
    • Image height: 21.64mm
    • Lens total length: 125.60mm
    • Backfocus: 11.06mm
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    37 comments

    2. Continue reading...
      Are we still expecting an event in 2021 where more lenses are announced at one time than ever before? If so, would these lenses potentially be part of that announcement?
      Or do you expect the major lens announcements will all be pushed to 2022 at this point?
      Do you have any news about telephoto announcements (300mm, 400 DO, 500mm, 200-500mm)?
      Thanks!
    4. The R range could do with small F2 primes to go with the small camera.
      24 and 35 1.4 would make sense to me but 22mm seems an odd focal length.
      20mm or 16mm I'd have thought would be more useful.
    6. Are we still expecting an event in 2021 where more lenses are announced at one time than ever before? If so, would these lenses potentially be part of that announcement?
      Or do you expect the major lens announcements will all be pushed to 2022 at this point?
      Do you have any news about telephoto announcements (300mm, 400 DO, 500mm, 200-500mm)?
      Thanks!
      Will purchase the 200-500f4 in a heartbeat
    8. Sorry to shout, but guys, these patents are almost never about the example lenses shown in the patent, but about the higher-level design. There is NO indication in this patent that these particular lenses might possibly be manufactured.

      This patent is over a specific set of lens group constraints that gives a result of minimizing the size of the focus group (to need a small motor and have low battery drainage and fast focus speed, one presumes) while satisfactorily correcting aberrations.

      The lenses described are merely things one could do with this set of constraints. The patent doesn't cover just these specific designs, but ALL designs that meet these constraints.

      If anything, I'd expect Canon to NOT tip its hand by showing an exact formula it is actually going to construct. It doesn't need to. There's no up-side. Has it ever done so before?

      The constraints mentioned are things such as: first group is immovable and has positive refractive power, second group negative and moves for focus, ratio of focal lengths of the various groups meeting certain mathematical constraints, and so on.
    9. First one doesn't get a patent for "constraints". An application is exactly just that, an application. Second, if one owns a patent who cares if their hand is tipped? That's why patents exist. Patent infringement is costly, especially if you lose. Ask Apple how it went with ProRes. Sure, I'll tip my hand if I hold a patent. Pay them royalties.
    10. I just want that RF 35mm f1.2 in my hands ASAP! Don’t care about f1.4.
      I spent the day with my RF50 1.2 (indoor kid birthday activities) and was constantly backing up. I suspect a 35 will replace the 50, and the 85 can take up the portrait distance slack.
    11. This might sound odd, but I still want to put it out there in case Canon is spying on the forum. Why can't Canon make 25mm and 15mm just like the Zeiss Milvus? If you look at the EF prime line up, let's start from 200mm, 135mm, 100mm, 85mm, 50mm, 35mm. I just feel that 25mm and 15mm are the logical sequence and not 24mm and 14mm. This might just be my OCD kicking in, but I have contemplated buying Zeiss just to keep the numbers logical.

      Right now I have the following Prime RF Lenses, 100 Macro, 85mm f/1.2, 50mm f/1.2. I am waiting for the RF 35mm f/1.2 (I have that covered for now with Tamron 35 f/1.4) and I will like to see 25mm f/1.4 and 15mm f/2.8 or even f/4 to complete the cycle.
    12. This might sound odd, but I still want to put it out there in case Canon is spying on the forum. Why can't Canon make 25mm and 15mm just like the Zeiss Milvus? If you look at the EF prime line up, let's start from 200mm, 135mm, 100mm, 85mm, 50mm, 35mm. I just feel that 25mm and 15mm are the logical sequence and not 24mm and 14mm. This might just be my OCD kicking in, but I have contemplated buying Zeiss just to keep the numbers logical.

      Right now I have the following Prime RF Lenses, 100 Macro, 85mm f/1.2, 50mm f/1.2. I am waiting for the RF 35mm f/1.2 (I have that covered for now with Tamron 35 f/1.4) and I will like to see 25mm f/1.4 and 15mm f/2.8 or even f/4 to complete the cycle.
      If you really want to be OCD then the next should be 15mm and there should never be a 25mm.

      135, 85, 50, 35, 15, see the pattern?

      Maybe one day, after AI has taken over photography, Canon can develop a new line of products, like vintage cars, just to satisfy us OCDer by strictly following these schemes. Oh and they should be exactly at those focal lengthens and no rounding shenanigans would be allowed.
    13. If you really want to be OCD then the next should be 15mm and ther should never be an 25mm.

      135, 85, 50, 35, 15, see the pattern?
      You are right. Now you are making me do calculations.
    16. Was really hoping for a 35mm 1.4L USM with weather sealing the size of the old EF50mm 1.4 (or smaller) - when traveling, size really matters. This would be the most important lens in my bag.
    17. I spent the day with my RF50 1.2 (indoor kid birthday activities) and was constantly backing up. I suspect a 35 will replace the 50, and the 85 can take up the portrait distance slack.
      The ef 35mm f/1.4L II has spectacular IQ on the R5/R6, and it balances as well as (or better than) any of my RF lenses.

      But, for me, not all EF lenses have good ergonomics with the adapter. For example, I had a very good copy of the ef 70-200mm f/2.8L IS II and sold it because it was too front heavy and the zoom ring just wasn't quite right with the R in portrait orientation. Too clumsy.

      Definitely worth grabbing the ef 35mm while they are still available, imo.

      I agree with you about 50mm being problematic in typical home-sized rooms for parties and other events.
    19. I spent the day with my RF50 1.2 (indoor kid birthday activities) and was constantly backing up. I suspect a 35 will replace the 50, and the 85 can take up the portrait distance slack.
      I'm mainly getting these primes to get great pics of my kiddos. For them I've found the 35mm is best indoors and the 50mm for outdoors. I can't wait to get a 35mm faster than 1.8.

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