Canon Patent: RF 9-18mm f/4 Wide Angle Zoom For EOS R System

Canon Patent

Here is a new Canon patent application, and it is a rather interesting one.

Canon patent application P2022065383 (Japan) discusses optical formulas for a RF 9-18mm f/4 wide angle zoom lens for the Canon EOS R system.

PROBLEM TO BE SOLVED: To provide a zoom lens which is compact and has high resolving power while having a wide angle of view.

With the increase in the number of pixels of an image pickup apparatus, there is a demand for a zoom lens having a wide angle and high optical performance. Patent Document 1 discloses a wide-angle zoom lens having a focal length at a wide-angle end of about 11 mm in terms of 35 mm and an angle of view of about 120 °.

However, when the zoom lens is widened, the refractive power of each lens constituting the zoom lens increases and the resolution decreases.

The present invention provides a zoom lens having a wide angle of view, yet being compact and having high resolving power.

Example 1

  • Focal length: 9.27-17.46
  • F value: 4.12
  • Half angle of view: 66.80-51.10
  • Image height: 21.64
  • Overall length: 130.07-127.77
  • Back focus: 11.00

The Canon patent was spotted by Asobinet. More Canon patent applications are listed here. Some particularly interesting patent applications we think might get into production are these:

Canon Patent: RF 16-28mm f/2.8, RF 15-28mm f/2.8-4 and RF 15-28mm f/4-5.6 IS

Canon Patent

A new Canon patent, once again for RF mount lenses. Some interesting lenses, we might add.

Canon patent application 2022063727 (Japan) discusses optical formulas for three RF mount lenses:

  • RF 16-28mm f/2.8
  • RF 15-28mm f/2.8-4
  • RF 15-28mm f/4-5.6 IS

PROBLEM TO BE SOLVED: To provide a zoom lens having a wide angle of view, easy to manufacture, and having little aberration fluctuation due to scaling.

In the zoom lenses disclosed in Patent Documents 1 and 2, in order to satisfactorily correct distortion and curvature of field, aspherical lenses having a large uneven thickness and a large diameter are added to the first lens group and the second lens group. Is used. As a result, it is difficult to manufacture a zoom lens.

The present invention provides a zoom lens capable of satisfactorily correcting distortion and curvature of field while having a wide angle of view and being easy to manufacture.

Example 1

  • Focal length: 16.45-27.50
  • F value: 2.88
  • Half angle of view: 52.71-38.49
  • Image height: 19.00-21.64
  • Overall length: 134.57-119.35
  • Back focus: 14.07

Example 2

  • Focal length: 15.40-27.50
  • F value: 2.88-4.04
  • Half angle of view: 54.50-38.66
  • Image height: 19.00-21.64
  • Overall length: 114.50-110.87
  • Back focus: 14.15

Example 3

  • Focal length: 15.40-27.50
  • F value: 4.00-5.60
  • Half angle of view: 54.51-38.94
  • Image height: 19.00-21.64
  • Overall length: 103.50-103.50
  • Back focus: 14.20

The Canon patent was spotted by Asobinet. More Canon patent applications are listed here. Some particularly interesting patent applications we think might get into production are these:

Canon RF 100-400mm f/5.6-8 IS Review (solid lens for the money, D. Abbott)

RF 100-400mm F/5.6-8 IS Review

Here is another Canon RF 100-400mm f/5.6-8 IS review, by one of our favorite gear reviewer. Although it is not an “L” tier lens, the Canon RF 100-400mm f/5.6-8 IS gets a lot of very positive reviews.

At a glance:

  • RF-Mount Lens/Full-Frame Format
  • Aperture Range: f/5.6 to f/45
  • One UD Element, One Aspherical Element
  • Super Spectra Coating
  • Nano USM AF Motor
  • Maximum Magnification: 0.41x at 400mm
  • Optical Image Stabilizer
  • Customizable Control Ring
  • Rounded 9-Blade Diaphragm

Dustin Abbott posted his exhaustive Canon RF 100-400mm f/5.6-8 IS review. From Dustin’s conclusion:

[…] a truly portable lens that brings this incredible focal range into the kind of size and weight combination that many more photographers can cope with.

[…] For the money, this is a solid lens. It definitely has its limitations, but it pulls off this challenging focal range in a pretty convincing faction…and that small size might mean that even those with deeper pockets might pick one up just for the sake of its portability. This is a solid move for Canon, and the RF 100-400 IS is a lens I suspect will sell very well for them.

[…] it will also work fine for those that shoot action, birds, or wildlife in reasonably good light. The autofocus is quick and quiet, and I had no problem locking onto subjects. Just be realistic about the kinds of lighting situations that you’ll be able to get enough shutter speed to stop action, and you’ll be fine. I can see this lens being a “bridge” lens for many – the telephoto option they can afford now while they save (or hope) for a more premium option in the future. For the money, this is a solid lens.

As usual Dustin Abbott’s reviews come with sample images, comparison charts, and all the information you might want to know. Dustin’s reviews are what I look for when I am about to purchase new gear. As usual Dustin Abbott also releases a complete video review. See below.

More gear reviews by Dustin Abbott are listed here. You can follow Dustin Abbott on Twitter, YouTube, or on his website.

More Canon RF 100-400mm f/5.6-8 IS review stuff is listed here.

Canon RF 100–400mm F5.6–8 IS:

America: B&H Photo, Adorama, Amazon USA, Amazon Canada, Canon Canada, Canon USA
Europe & UK: Amazon DE, Amazon UK, Amazon IT, Wex Photo Video, Canon DE, Canon UK

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Canon RF 35mm f/1.2L or f/1.4L Eventually Coming Summer 2022?

Rf 24mm F/1.8 Rf-s Canon Eos R7 Eos R100 Canon High Resolution Eos R R10 Eos C5 Canon Eos R1 Eos R5c Canon Rf 16mm Rf 35mm F/1.2L EF Lenses Tilt-shift Lenses Rumor

Canon RF 35mm f/1.2L is rumored almost since the beginning of the EOS R system era. And it’s rumored for a good reason: their is no doubt Canon will eventually release this lens, sooner or later.

The Canon RF 35mm f/1.2L got a new mention, and it’s suggested the lens is already in the “hands of testers and marketing folks and recently appeared in an internal dealer roadmap”. There is a bit of uncertainty if it will be f/1.2 or f/1.4, though. Why not both?

All Canon rumors are listed here. Stay tuned.

Source: CR

Canon RF 16mm F/2.8 STM Review (excellent value for money, extremely versatile)

Rf 16mm F/2.8 STM Review

Here is a new Canon RF 16mm F/2.8 STM review. An affordable lens that performs quite good. This is not the first very positive review this lens gets.

Canon RF 16mm f/2.8 STM at a glance:

  • RF-Mount Lens/Full-Frame Format
  • Aperture Range: f/2.8 to f/22
  • One Aspherical Element
  • Super Spectra Coating
  • STM Stepping AF Motor
  • Customizable Control Ring
  • Rounded 7-Blade Diaphragm

ePhotozine posted their full Canon RF 16mm F/2.8 STM review. They gave the lens a 4.5/5 rating and a “highly recommended”. We agree. This is a lens every EOS R photographer should have. From ePhotozine’s conclusion:

It is not perfect technically, but it is a perfectly usable and extremely versatile ultra-wide lens at a very keen price. It seems to be well made and many of the shortcomings optically may well not be significant drawbacks for the applications the lens is intended for. In particular, it could be an outstanding vlogging lens, it has low distortion making it ideal for architecture and delivers sharp, impressive images at real-world distances.

Read the full review at ePhotozine…

I our opinion, this is a little gem only Canon can make at this price. The Canon RF 16mm f/2.8 STM sells at $299:

America: B&H Photo, Adorama, Amazon USA, Amazon Canada, Canon Canada, Canon USA
Europe & UK: Amazon DE, Amazon UK, Amazon IT, Wex Photo Video, Canon DE, Canon UK

All Canon RF 16mm f/2.8 STM coverage is listed here.

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Canon RF 14-35mm F/4L IS Review (a beauty delivering lovely results)

Canon RF 14-35mm F/4L IS Review

Here is a Canon RF 14-35mm F/4L IS review. A rather enthusiastic review, we might add.

At a glance:

  • RF-Mount Lens/Full-Frame Format
  • Aperture Range: f/4 to f/22
  • Three UD Elements
  • Three Aspherical Elements
  • Air-Sphere and Fluorine Coatings
  • Nano USM AF System
  • Optical Image Stabilizer
  • Customizable Control Ring
  • Rounded 9-Blade Diaphragm

ePhotozine posted their full Canon RF 14-35mm F/4L IS review. They gave the lens a 5/5 rating and an “editor’s choice” mention. From their conclusion:

Some lenses just gel and just get on with the job, performing flawlessly and smoothly and not getting in the way of image-making. This is such a lens; what a beauty it is and what lovely results it delivers.

The extra 1mm compared to the existing 15-35mm lens should not be underestimated, as such a difference is much more significant in an ultra-wide than, say, the difference between a 100mm and 105mm lens would be. The loss of 1 stop of speed does mean a lighter, more compact lens that also costs significantly less. This makes a good choice for travel photography.

In summary, a superb offering from Canon and without doubt an ‘Editor’s Choice’.

Read the review at ePhotozine

Canon RF 14-35mm F/4L IS:

America: B&H Photo, Adorama, Amazon USA, Amazon Canada, Canon Canada, Canon USA
Europe & UK: Amazon DE, Amazon UK, Amazon IT, Wex Photo Video, Canon DE, Canon UK

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