Canon Patent: RF 100-300mm f/2.8L IS USM Lens

Canon Patent

A new Canon patent application was spotted.

Canon patent application 2023099388 (Japan, published 7/13/2023) discusses optical formulas for what appears to be an RF 100-300mm f/2.8L IS USM lens for the EOS R camera system. From the patent literature:

Title of Invention

A zoom lens, an imaging device having the same, and an imaging system.

An object of the present invention is to provide a lightweight zoom lens that has high optical performance over the entire zoom range, and an imaging device and an imaging system having the zoom lens.

Description of the Related Art

In recent years, zoom lenses used in imaging apparatuses are required to have high optical performance over the entire zoom range and to be lightweight. In order to meet these requirements, the zoom lens has a first lens group with positive refractive power, a second lens group with negative refractive power, and a subsequent group including a plurality of lens groups, arranged in order from the object side to the image side. Lenses have been proposed (see Patent Documents 1 and 2).

A large-aperture telephoto zoom lens having a long focal length and a small F-number tends to have a large lens diameter, which tends to cause an increase in weight. In order to reduce the weight of the zoom lens, it is effective to increase the positive refractive power of the first lens group and reduce the lens diameters of the lens groups included in the subsequent group. However, if the refractive power of the first lens group is made too strong, it becomes difficult to correct spherical aberration, axial chromatic aberration, and lateral chromatic aberration, especially at the telephoto end.

SUMMARY OF THE INVENTION

It is an object of the present invention to provide a lightweight zoom lens that has high optical performance over the entire zoom range, and an imaging apparatus and imaging system having the zoom lens. Focusing is performed by moving the fifth lens unit L5 and the sixth lens unit L6 along different trajectories . Specifically, the fifth lens unit L5 and the sixth lens unit L6 move toward the image side when focusing from an infinite object to a close object.

Example 1

  • Focal length: 103.00-292.00
  • F-value: 2.90
  • Half angle of view: 11.86-4.24
  • Image height: 21.64
  • Total length: 333.61
  • Back focus: 31.93

More Canon patent applications are listed here. Some particularly interesting patent applications we think might get into production are these:

[via asobinet]

Canon EOS R5 Mark II To Get 60MP?

Nab 2023 Canon Eos R5 Mark Ii Canon Eos R8 CP+ 2024 Mark Ii Canon EOS Rf 24-50mm R6 Mark Ii Rf Mount Eos R6 Mark Ii Rf 300mm Rf 35mm Canon Eos R100 Rf 24mm F/1.8 Rf-s Canon Eos R7 Eos R100 Canon High Resolution Eos R R10 Eos C5 Canon Canon Eos R1 Eos R5c Canon Rf 16mm Rf 35mm F/1.2L EF Lenses Tilt-shift Lenses Rumor

A new rumor about the Canon EOS R5 Mark II from what appears to be a new, recently surfaced rumor outlet. We never heard from these guys and do not know who they are. That’s to say that you should apply the proverbial truckload of salt. Most rumors are nothing but speculations or educated guesses.

Latest has it that the Canon EOS R5 Mark II might feature a 60MP imaging sensor. The current model, the EOS R5, already sports a 45MP sensor. The bump to 60MP wouldn’t be that unrealistic. Quoting the source:

Through some industry people, we have found out that it is very likely that the EOS R5 Mark II will get a resolution bump to 60mp, which seems to be a resolution embraced by other brands already. Reports suggest that the camera is already in the hands of the usual early testers as Canon works to refine the camera.

The same sources said that the R52 will also have the capability of shooting 8K/60P. We do not know if the increased framerate for 8K/60P will be internal RAW. External recording capabilities are not yet known.

But, hey!, what about the all-destroying overheating? Not surprisingly, “Canon has developed better cooling for the successor [the EOS R5]”. Of course they did.

The announcement date is now rumored to be around the first half of 2024. All Canon EOS R5 Mark II rumors are listed here.

Forget rumors, enjoy life and snap pictures.

[via Camera Insider]

Here Are All Canon EOS R1 Rumors Neatly Summed Up

Nab 2023 Canon Eos R5 Mark Ii Canon Eos R8 CP+ 2024 Mark Ii Canon EOS Rf 24-50mm R6 Mark Ii Rf Mount Eos R6 Mark Ii Rf 300mm Rf 35mm Canon Eos R100 Rf 24mm F/1.8 Rf-s Canon Eos R7 Eos R100 Canon High Resolution Eos R R10 Eos C5 Canon Canon Eos R1 Eos R5c Canon Rf 16mm Rf 35mm F/1.2L EF Lenses Tilt-shift Lenses Rumor

It’s still not here, and it’s the favorite rumor for many. The fabled EOS R flagship, the Canon EOS R1.

Don’t get me wrong: there will be a Canon EOS R1, for the simple fact that it is plain logic that there will be one. That people is exploiting this since three years again and again with the same rumors is an entirely different story. However, Canon Rumors has neatly summed up everything that has been reported about the Canon EOS R1:

  • Larger body than the Canon EOS R3
  • Much larger OLED panel on the back of the camera.
  • Resolution will be “around 45mp”, which Canon feels is the sweet spot for resolution.
  • The EVF will be the “highest resolution” when it launches, it will reportedly be a Canon made EVF.
  • Global shutter? Some say yes, others say no. For the moment, we have no idea.
  • The battery will be a variation of the LP-E19
  • The EOS R1 will get dual CFe slots.
  • Expect “a more EOS-1D style ergonomic design”.
  • The top down display will be colour instead of monochrome if you so desire.
  • An “all-new autofocus system”.
  • Video features? We have no idea.
  • The announcement will be a “drawn-out affair”, which we think means a development announcement first and then getting the camera in pros hands to do the final tweaks to firmware before an official announcement.

One thing that never ever is missing from this kind of rumors is the “all-new autofocus-system” :-)

Take the list above with a solid amount of salt. There is absolutely nothing to be sure about so far. Until the usual few Asian sites will deliver the real stuff, we can just speculate.

Forget rumors, go out snapping pics!

Canon Might Have An RF-mount Fisheye Zoom In The Pipeline

Rf 5.2mm F/2.8L

Nothing surprising here. Why should Canon not work on a fisheye zoom lens for the EOS R system.

Rumor has it that…:

[…] a zoom fisheye similar to the EF version will be coming for the RF mount. It will be an “all-new” optical design and will work just fine on both crop and full-frame cameras.

For the time being, Canon only released the RF 5.2mm f/2.8L USM Dual Lens Fisheye for the EOS R system. The RF 5.2mm aims at virtual reality applications.

As usual, take it with salt. Unless the usual few Japanese sites confirm it, it’s just educated speculation.

Stay tuned, or even better: don’t, and get out taking pics.

Source: Canon Rumors

Canon EOS R5 Replacement Coming Q4 2023?

Canon EOS R5 Review

Another shift in the expected announcement date for the successor of the Canon EOS R5. I’d take this one with the same salt mine as the others. In other words: do not be suprised when after the Summer the rumored announcement will be in 2024.

However, the latest has it that a “very good source” suggested the replacement for the EOS R5 will be a Q4 2023 affair. But there is more. Another rumor coming from the same source states that Canon may release two EOS R5s. One is the EOS R5 Mark II and the other is a unique high-resolution EOS R5 camera (the long rumored high resolution EOS R). The truth is, no one know shit until the usual few Japanese sites are leaking something solid. Everything else, in 90% of the cases, is just bla bla yadda yadda.

Forget bs rumors and go out snapping photos, it’s healthier.

[via asobinet]

Has The Canon EOS R1 Been Spotted At G7 Japan?

Canon EOS R1

It seems that during the G7 in Japan a Canon camera was used that no one can identify. So why not suggest it could be the Canon EOS R1?

The heat started on Twitter, where some users posted images of the mysterious camera. Have a look:

Then someone posted a clip where you can see the camera.

It looks indeed like no other Canon camera we know. Might this be the Canon EOS R1? What are your thoughts?

[via Digicame-Info]