svg+xml;base64,PHN2ZyB2aWV3Qm94PScwIDAgNzI4IDEwMjQnIHhtbG5zPSdodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2Zyc+PC9zdmc+ - Patent: Canon RF 35-135mm f/2.8 and other fast zoom lenses

    Patent: Canon RF 35-135mm f/2.8 and other fast zoom lenses

    By 69 Comments1 Min Read Canon Patents

    Canon News has uncovered a patent showing optical formulas for fast RF zoom lenses, likely of the L variety. The purpose of the patent is to showcase a high-performance zoom lens design.

    Of the three embodiments in this patent, only the RF 35-135mm f/2.8 seems like a design that has a slight chance of becoming a consumer product.

    Canon RF 35-135mm f/2.8
    Focal Length 35.39mm 69.00mm 132.93mm
    F Number 2.85 2.85 2.85
    Half Angle of View 31.44° 17.41° 9.24°
    Image Height 21.64mm 21.64mm 21.64mm
    Total Lens Length 173.35mm 186.83mm 203.35mm
    Backfocus 17.95mm 27.32mm 34.01mm
    Canon RF 40-150mm f/2.8
    Focal Length 40.06mm 69.00mm 147.97mm
    F Number 2.85 2.85 2.85
    Half Angle of View 28.37° 17.41° 8.32°
    Image Height 21.64mm 21.64mm 21.64mm
    Total Lens Length 173.35mm 191.43mm 218.30mm
    Backfocus 17.98mm 26.04mm 38.94mm
    Canon RF 30-110mm f/2.8
    Focal Length 30.99mm 69.00mm 109.92mm
    F Number 2.85 2.85 2.85
    Half Angle of View 34.92° 17.41° 11.13°
    Image Height 21.64mm 21.64mm 21.64mm
    Total Lens Length 173.09mm 189.92mm 203.35mm
    Backfocus 17.95mm 28.25mm 33.97mm

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    69 comments

    3. A 35-135 f2.8L lens would sell very well as a great high-IQ general purpose lens with full "portrait" zoom reach. Pair it with a 15-35 f4L(or f2.8L) and maybe 100-500 f4.5-7.1L and you'd have a great setup.
    6. Wow! It’s getting real hard to choose a system nowadays...
      It's no better time to choose a system: buy R5 and RF lenses, and sell every other digital equipment before they get worthless :D
    8. It's no better time to choose a system: buy R5 and RF lenses, and sell every other digital equipment before they get worthless :D
      Not such a great idea when the comparative costs are actually given. You can get a 5D IV and 2.8 zoom trinity for peanuts compared to an R5 and 2.8 zoom trinity, and I haven’t seen a single image one could take and the other couldn’t.

      Are you a tech head or a photographer is more to the point, tech heads will always be seduced by the newest shiniest toy, photographers will take pictures with whatever they can afford (or borrow).
    10. It's no better time to choose a system: buy R5 and RF lenses, and sell every other digital equipment before they get worthless :D

      I like R5, but I also like 28mm lenses... and don’t have money for R5 (yet?). I actually almost sold everything, and now I stuck between options. Sony has nice 28mm and compact 35 1.4 is coming... but 35-135 2.8 is my dream zoom.
      Anyway, I need more money, so I have time to see what’s coming.
    11. Not such a great idea when the comparative costs are actually given. You can get a 5D IV and 2.8 zoom trinity for peanuts compared to an R5 and 2.8 zoom trinity, and I haven’t seen a single image one could take and the other couldn’t.

      Are you a tech head or a photographer is more to the point, tech heads will always be seduced by the newest shiniest toy, photographers will take pictures with whatever they can afford (or borrow).
      Yep. If I was only photographer - I’d go with 5Dmk4 and 35+85 1.4 combo. But my tech part insist to be modern and go mirrorless)
    12. A 35-135 f2.8L lens would sell very well as a great high-IQ general purpose lens with full "portrait" zoom reach. Pair it with a 15-35 f4L(or f2.8L) and maybe 100-500 f4.5-7.1L and you'd have a great setup.
      The cost, weight and size will be quite expensive.
    13. Yep. If I was only photographer - I’d go with 5Dmk4 and 35+85 1.4 combo. But my tech part insist to be modern and go mirrorless)
      This is a case of photographic schizophrenia .
      I'd suggest a quick visit to Dr. Canon, only he can help in desperate cases like yours. ;)
    14. Canon L zooms are getting closer, but still can't match the quality of most L prime lenses.
      It could be even harder for such an "extreme" zoom lens.
      I know zooms are very useful, using them often. But, does it really make sense to buy a 90 MP Rs, without using the sharpest possible lenses?:unsure:
    15. The cost, weight and size will be quite expensive.
      I'll guess it'll be between the size/weight/cost of the 24-70 f2.8L and 70-200 f2.8L. And I'll also guess that it will be a fantastic lens if they make it!
    16. Canon L zooms are getting closer, but still can't match the quality of most L prime lenses.
      It could be even harder for such an "extreme" zoom lens.
      I know zooms are very useful, using them often. But, does it really make sense to buy a 90 MP Rs, without using the sharpest possible lenses?:unsure:
      I share the same concern. If you use RF L primes and L zooms then you're doing about as good as you can do for IQ, no matter what the difference is. The other RF lenses will be lighter & less expensive and probably won't see any difference between them. If the R5s is anywhere similar in cost to the R5 then you might as well get it as it will be at least as good or maybe better in IQ with the same lenses. It may have other various improvements due to a later design & manufacture. Be sure to use compressed raw for the best quality without totally drowning you computer in needed storage. :ROFLMAO:
    17. ...Be sure to use compressed raw for the best quality without totally drowning you computer in needed storage. :ROFLMAO:
      I actually ordered a NAS system this week in preparation for that very challenge!
    18. that would probably be an RF lens I would be interested in. right now, the RF trinity offerings aren't significantly better than my EF trinity.

      Where do you get your data? Bryan Carnathan for one competent reviewer would disagree. I would as well. My EF L lenses were very good but the RF lenses are definitely better. The RF24-105/4 is remarkably better than any previous EF version, just as one example. The redesigned mount is part of that difference. The R5 demands extremely good glass & the RF series works extremely well with it. If your concern is money why don't you write them off your taxes as a business expense as many of us do? The cheaper is better arguments are irrelevant. We are talking about various lens characteristics that lend themselves to better files.

      Stu
    19. Not such a great idea when the comparative costs are actually given. You can get a 5D IV and 2.8 zoom trinity for peanuts compared to an R5 and 2.8 zoom trinity, and I haven’t seen a single image one could take and the other couldn’t.

      Are you a tech head or a photographer is more to the point, tech heads will always be seduced by the newest shiniest toy, photographers will take pictures with whatever they can afford (or borrow).
      And then some photographers are tech heads at the same time.

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