Canon Patents

Patent: Canon RF 28mm f/1.4L USM and Canon RF 35 f/1.4L USM

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Canon News has uncovered a patent showcasing what would be two popular fast prime optical formulas in the form of an RF 28mm f/1.4L USM (Yay!) and an RF 35mm f/1.4L USM.

As you may remember, we recently saw a patent for the long-rumoured Canon RF 35mm f/1.2L USM. It probably doesn’t make much sense to have both a `1.2 and a 1.4 35mm lens in the lineup. The RF 28mm f/1.4L USM does excite me on a personal level.

Canon RF 28mm f/1.4L USM

  • Focal Length: 28.00mm
  • F-number: 1.42
  • Half angle: 37.69°
  • Image height:21.64mm
  • Lens total length: 140.62mm
  • Backfocus: 21.99mm

Canon RF 35mm f/1.4L USM

  • Focal Length: 34.98mm
  • F-number: 1.42
  • Half angle: 31.73°
  • Image height: 21.64mm
  • Lens total length: 154.45mm
  • Backfocus: 16.17mm
Jul 23, 2013
345
178
carlsmiller.com
Does "Lens total length" not mean what I think it does? These would be wayyyy too big at 140mm and 154mm in length. The EF 35 1.4L II is 105mm. The new Sony 35mm 1.4 is 96mm.
 
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Larsskv

EOS R
Jun 12, 2015
852
297
Does "Lens total length" not mean what I think it does? These would be wayyyy too big at 140mm and 154mm in length. The EF 35 1.4L II is 105mm. The new Sony 35mm 1.4 is 96mm.
My first reaction as well. As much as I appreciate the RF lenses, I do envy Sony for the small but still very good 24 and 35 f1.4 GM lenses. I thought the larger RF lens mount would benefit Canon in both size and quality. Maybe I am wrong.
 
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Joules

doom
CR Pro
Jul 16, 2017
1,791
2,232
Hamburg, Germany
Does "Lens total length" not mean what I think it does? These would be wayyyy too big at 140mm and 154mm in length. The EF 35 1.4L II is 105mm. The new Sony 35mm 1.4 is 96mm.
You have to subtract 20 mm from total lens length to get how much is sticking out of the body. And of course you have to add 24 mm to an EF lens length to get a fair comparison, as that's the length of the adapter.
 

Ozarker

Love, joy, and peace to all of good will.
CR Pro
Jan 28, 2015
5,734
4,166
The Ozarks
Does "Lens total length" not mean what I think it does? These would be wayyyy too big at 140mm and 154mm in length. The EF 35 1.4L II is 105mm. The new Sony 35mm 1.4 is 96mm.
9mm difference. 9mm makes absolutely no difference to me. I find it very hard to believe that 9mm is a deal breaker for anyone. It certainly isn’t a reason to switch brands. 9mm? Nothing to sweat about.
 

Berowne

... they sparkle still the right Promethean fire.
Jun 7, 2014
412
336
I would appreciate smaler lenses on my R6. The EF-Lenses are quite big with adapter. Here is a comparison with my Leica SL and the 2.8/60mm Macro-Elmarit. This is the size i would have for RF-Primes.
 

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dlee13

Canon EOS R6
May 13, 2014
269
162
Australia
WWW.photosbydlee.com
I personally feel they have room for both in the lineup! The f/1.2 lens can be the larger lens with no compromises in IQ but high priced and the f/1.4 is the betweener which has great IQ, fast aperture but moderately priced and smaller/lighter.
 
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SwissFrank

1N 1V 1Ds I II III R R5
Dec 9, 2018
785
430
It probably doesn’t make much sense to have both a `1.2 and a 1.4 35mm lens in the lineup.

I think it just about does, for 35, 50, and 85, and especially if there's also some other feature differentiating them. Maybe the 50/1.4 would be a typical Gaussian design, compact but not that sharp, while the 50/1.2 would be... whatever it is that 50/1.2 is :-D

Similarly I'd welcome a super-portable 35/1.4 (similar to the pre-ASPH Leica design, super-small), for whenever you toss the camera in the backpack, then a 35/1.2 that aimed to be the last word in bokeh, say, and might be 4x heavier and more expensive, and not just for the extra 1/3 stop.
 
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Del Paso

M3 Singlestroke
CR Pro
Aug 9, 2018
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Finally, Canon seems to have understood that there is a real demand for Hi IQ wide-angle primes. Nikon and Sony already have theirs.
Good news!
What about a 1,8/20mm ?
 

Del Paso

M3 Singlestroke
CR Pro
Aug 9, 2018
1,719
1,984
I would appreciate smaler lenses on my R6. The EF-Lenses are quite big with adapter. Here is a comparison with my Leica SL and the 2.8/60mm Macro-Elmarit. This is the size i would have for RF-Primes.
I too have the R 2,8/60 .
And absolutely love it, not only for being small.
It is deadly sharp, contrasty, distortionless, flare resistant, low vignetting : just a perfect MF lens.
Is this the way to go: smallish EOS R cameras with barrel-sized lenses ?
We need more options.
 

photonius

EOS RP
Jul 13, 2013
242
23
Hmm, I don't know, this trend of lens development starts to look excessively over-engineered. Ok, I guess some people might wish to have an extremely well corrected lens with large aperture. But how much is this lump of glass going to weight? IQ will certainly be much better than the old style SLR lenses, but at some point the improvement isn to worth the extra weight and size. Maybe it's my old eyes that don't need pixel perfect resolution anymore.... Anyway, as long as it sells for Canon, it's ok. But don't forget lenses for the rest of the photographers that would like to have something reasonable that is better than a smartphone.
 
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rbr

EOS 90D
Sep 11, 2010
114
47
Funny timing on this one. I just ordered the Sigma 28 f1.4 ART to use on my R5. Canon really needs to step up their game on the wide end for the RF lenses. I look enviously at all the great wide angl;e options available in the Sony E mount and what Nikon has already put out for the Z cameras.
 
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privatebydesign

I post too Much on Here!!
CR Pro
Jan 29, 2011
10,678
6,114
Funny timing on this one. I just ordered the Sigma 28 f1.4 ART to use on my R5. Canon really needs to step up their game on the wide end for the RF lenses. I look enviously at all the great wide angl;e options available in the Sony E mount and what Nikon has already put out for the Z cameras.
It always makes me smile when an individual says something like “Canon needs to...”. Canon are turning out class leading and tech leading lenses and bodies faster than anybody else.

As an aside, can you get uncooked RAW files from the Sony’s or Nikon’s when using those new small fast wide primes? I suspect not....
 
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dirtyvu

EOS 90D
Jan 7, 2019
150
115
Can't wait for the 35 1.4! Wonder how much. I can imagine the 1.2 being rf pricey. Hopefully 1.4 is truly moderate
 

rbr

EOS 90D
Sep 11, 2010
114
47
It always makes me smile when an individual says something like “Canon needs to...”. Canon are turning out class leading and tech leading lenses and bodies faster than anybody else.

As an aside, can you get uncooked RAW files from the Sony’s or Nikon’s when using those new small fast wide primes? I suspect not....
Fair enough. I must say that I love the files coming from Sigma ART lenses on the R5. I can deal with the extra ounces.
 
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