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    Patent: Canon RF 17-70mm f/3.5-5.6

    By 33 Comments1 Min Read Canon Patents
    rf1770patent 728x462 - Patent: Canon RF 17-70mm f/3.5-5.6

    Canon News has uncovered a patent for a new RF mount optical formula, this patent shows an RF 17-70mm f/3.5-5.6 in various forms. This looks like some kind of wide kit style lens because of the variable aperture.

    Below are the three embodiments:

    Canon RF 17-70mm f/3.5-5.6

    • Focal length: 17.40mm 35.02mm 68.69mm
    • F-numbe:r 3.57 4.18 5.85
    • Half field angle: 51.19° 31.71° 17.48°
    • Image height: 21.64mm 21.64mm 21.64mm
    • Total lens length: 149.59mm 133.68mm 150.50mm
    • BF: 13.43mm27.63mm 57.99mm

    Canon RF 17-70mm f/3.5-5.6

    • Focal length: 17.10mm 34.82mm 72.70mm
    • F numbe:r 3.57 4.18 5.85
    • Half angle of view:  51.68° 31.85° 16.57°
    • Image height: 21.64mm 21.64mm 21.64mm
    • Total lens length: 151.00mm 135.57mm 157.71mm
    • BF: 13.13mm 27.81mm 63.49mm

    Canon RF 18-80mm f/3.5-5.6

    • Focal length: 18.70mm 37.55mm 77.50mm
    • F-number: 3.57 4.18 5.85
    • Half angle of view: 49.16° 29.95° 15.60°
    • Image height: 21.64mm 21.64mm 21.64mm
    • Total lens length: 146.50mm 128.90mm 147.50mm
    • BF: 15.19mm 27.72mm 59.84mm
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    33 comments

    3. 17-70 f3.5-5.6 is an ideal FF compatible aps-c lens for a mirrorless 7d ish camera.
      Yes, an ideal focal length for APS-C, or a nice ultra-wide zoom for FF.

      Also, with the cropped 4K on the R, it would be a nice lens for video.
    6. Not as wide as 15-85 - not ideal.

      Good as a FF kit lens, though.
      True, but that's not a standard kit lens on any of the 000x or 00x models. The normal kit lenses are 18-55 and 18-135. In the past they have started at 17, but the 15-85 was always a premium upgrade.

      I suspect the primary reason it's not 18-55 is that it cost the same to make it slightly wider and slightly longer, and 70mm rolls right into a 70-300 (or 70-200 if it's an upsell). This just cements in my mind that aps-c will come to RF. We will eventually see RF rebels, and probably even a full frame rebel at a 999 price point, even cheaper "street" price. I think the only thing that will NOT happen is RF-S.
    7. I'm back from a vacancy changing several times the Wide and standard zoom.
      This is the solution for travellers.

      PS report for flamers:
      In a group (general tourist) we have
      1 5D4
      1 6D
      3 rebels
      1 nikon reflex aps-c
      1 fuji ML
      1 sony 6x00
    8. So an aps-c R is confirmed then. I guess it won't take long for it be announced after the 90d. But then again I don't understand why the 90d release oin that case? Especially since the 90d seems more like a replacement of 80d than 7dmii?
    9. So an aps-c R is confirmed then. I guess it won't take long for it be announced after the 90d. But then again I don't understand why the 90d release oin that case? Especially since the 90d seems more like a replacement of 80d than 7dmii?

      It's just a patent. Patents don't confirm anything, so I wouldn't get my hopes up just yet.
    10. I'm back from a vacancy changing several times the Wide and standard zoom.
      This is the solution for travellers.

      PS report for flamers:
      In a group (general tourist) we have
      1 5D4
      1 6D
      3 rebels
      1 nikon reflex aps-c
      1 fuji ML
      1 sony 6x00

      Can't be true:
      There must have been at least 90% of Wonderful Sonies according to Youtube ;).
    11. 17-70 f3.5-5.6 is an ideal FF compatible aps-c lens for a mirrorless 7d ish camera.

      It would make no sense to get s FF superwide and waste it with a crop sensor. On full frame such superwide to short tele would be nice.
    13. Definitely a full-frame lens for full-frame camera, I think (as do some of the folks in prior answers) that one needs to re-think zoom lens strategies with the potential of a new mount. I am leaving tomorrow for a trip to south America, wanting to walk around with light(er) gear than my usual 11-24, 24-105 and 100-400, and using current lenses that I have: 16-35 L IS, 24-105 and either the 70-200 L 4.0 IS or 70-300 DO. Note the overlaps, not always a bad thing but I have 2 bodies for 3 lenses for this use case. Instead, with new RF gear I could have a 17-70 and a 70-200 (or 70-300, sure bet they will offer that at some point in time), so with 2 bodies I do not need to change lenses. Brilliant!
      I see assumptions of this not being an L lens because of the variable aperture, but the EF 100-400 and 70-300 L are variable aperture, so let's not jump to conclusions.
    15. True, but that's not a standard kit lens on any of the 000x or 00x models. The normal kit lenses are 18-55 and 18-135. In the past they have started at 17, but the 15-85 was always a premium upgrade.

      I suspect the primary reason it's not 18-55 is that it cost the same to make it slightly wider and slightly longer, and 70mm rolls right into a 70-300 (or 70-200 if it's an upsell). This just cements in my mind that aps-c will come to RF. We will eventually see RF rebels, and probably even a full frame rebel at a 999 price point, even cheaper "street" price. I think the only thing that will NOT happen is RF-S.

      While it's not a standard APS-C kit lens, even though it would be much better to have an RF-S 17-70mm, it would to the job in a pinch if Canon wanted to simply release an APS-C camera into the wild with no supporting RF-S lenses. It's one of the few full frame lenses that I could see fitting into both full frame and aps-c, as a kit lens for both sensor sizes. the EOS RP could use it as a sweet kit lens, and so could an APS-C RF camera.

      Also, this is the second time we've seen 17-70mm in patent applications, which makes it a bit more likely it's going to happen.
    17. This would be perfect, because I could carry this and a 70 - 200 plus a fixed lens or teleconverter and have a very reasonable bag.

      Right now I carry a 16 - 35 + 24 - 105 f/4's + fixed (28 or 85 f/1.4), or 16 - 35 + 70 - 200 f/2.8 + 50 f/1.2 or TC's. None of those configurations are as ideal as this would be.
    18. While it's not a standard APS-C kit lens,
      It has a FF image circle. Think of it as a 17-40 combined with a 24-70, with a variable aperture to keep size/cost down as a non-L lens. Honestly, I think it would be an excellent standard zoom for the EOS RP.
    19. i don’t know why so many people are so defensive by the prospect of canon selling an r mount aps c camera. This lens patent works for both.

      As I recall, Canon said they planned to sell more full frame lenses, they picked their words carefully and never said systems or bodies when talking about the RF mount.

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