Canon Patents

Patent: Canon RF 40mm f/1.8 & Canon RF 35mm f/1.8 optical formulas

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A patent showing two optical formulas for some Canon RF primes has been uncovered by Canon News.

Canon RF 40mm f/1.8

  • Focal Length: 41.92mm
  • F-Number: 1.85
  • Angle of View: 27.30°
  • Image Height: 21.64mm
  • Lens length: 71.50mm
  • BF: 13.97mm

Canon RF 35mm f/1.8

  • Focal length: 36.00mm
  • F-number: 1.85
  • Angle of view: 31.00mm
  • Image height: 21.64mm
  • Lens length: 79.97mm
  • BF: 11.65mm

I’m expecting non-L RF mount prime lenses to be coming in the relatively near future, and this patent may be part of a series of Non-L prime lenses coming to the EOS R system

The patent does show a DSLR for the illustrations, but the backfocus length of these optical formulas shoes these designs are definitely for the RF mount.

Larsskv

EOS R
Jun 12, 2015
852
297
I would be very surprised if a new RF 35 f1.8 was released in the near future. The current RF 35 f1.8 IS is quite excellent as it is.
 
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MadScotsman

EOS R / RP
Sep 9, 2019
45
82
I would be very surprised if a new RF 35 f1.8 was released in the near future. The current RF 35 f1.8 IS is quite excellent as it is.

Exactly. And a fun little macro to boot. Can't imagine another 35 1.8 would have anything to offer over the current 35 1.8? Doesn't make sense, perzactly. Unless there's something different about trying that's not apparent.
 
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jeffa4444

EOS 5D Mark IV
Feb 28, 2013
1,566
227
68
A series of non L f1.8 lenses and a series of f1.4L lenses in RF mount makes a lot of sense. Dont understand the need for a second RF35 f1.8 though.
 
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AJ

EOS R
Sep 11, 2010
802
224
Maybe some patents to protect the existing RF 35/1.8?
 
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SteveC

R5
CR Pro
Sep 3, 2019
2,567
2,472
As a camera peasant, I've only ever owned one L lens. Are they worth the extra money generally?

A couple of people have answered Yes, but I'll be a little more cautious. My 100-400 L is vastly superior to the non-L lenses I own...but only you can answer the question of whether the improved image quality is worth the extra money TO YOU.

I can say there IS a difference, only you can put a value on it versus whatever else you might be able to do instead with the extra money.
 
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sulla

EOS RP
Dec 31, 2012
353
141
Austria
www.flickr.com
Well, Bryan Carnathan at the-digital-picture appropriately writes: "What you can get when you use Canon L lenses (if you do your part right) are amazing pictures. In fact, this amazement is said to cause a disease know as "L-Disease". Once caught, it is incurable. You will have to buy Canon L lenses in all of the focal lengths you use. AND you will be happy (and I hope you know that I am not being totally serious). "
So, PLEEEAAAASSSEEEE, keep your fingers off of L-lenses. It's just way toooo dangerous to catch that disease.
 
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MadScotsman

EOS R / RP
Sep 9, 2019
45
82
The only L i owned was a 24-105 f4, compared but my EF 50mm f1.8 is an amazing lens. So i'd say Sometimes, not yes always.

Thinks the current 35 1.8 is too expensive, and the $100 50 is better than the 24-105 4L.

Riiight....

:rolleyes:
 
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JoshEFuller

5D MK IV + EOS R
Feb 11, 2020
5
6
San Diego
www.joshefuller.com
As a camera peasant, I've only ever owned one L lens. Are they worth the extra money generally?

If you're asking if the newest, latest-and-greatest L glass is better than any of the alternatives out there, then the answer is almost always YES. It's the best.

But if by "worth it" you're asking about value... the Canon 70-200 2.8L IS III is $1800 whereas the Tamron 70-200 G2 is $1200. That's 2/3rds the price. So, is the Canon 33% better? Noooo... but you won't get a lot of argument that the Canon is at minimum a little better in most categories.

So, as with all things, it's "up to you".
 
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koenkooi

EOS 5D Mark IV
CR Pro
Feb 25, 2015
2,073
2,064
If you're asking if the newest, latest-and-greatest L glass is better than any of the alternatives out there, then the answer is almost always YES. It's the best.

But if by "worth it" you're asking about value... the Canon 70-200 2.8L IS III is $1800 whereas the Tamron 70-200 G2 is $1200. That's 2/3rds the price. So, is the Canon 33% better? Noooo... but you won't get a lot of argument that the Canon is at minimum a little better in most categories.

So, as with all things, it's "up to you".
Nitpick: 50% better, 1200+400 is not 1800
 
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