Canon Patent: 200-1000mm F5.6-11 IS And 200-800mm F5.6-8 IS Lenses

Canon Patent

Here is a new Canon patent application: two super telephoto zooms for the RF mount.

Canon patent application 2023135180 (Japan, published 9/28/2023) discusses optical formulas for two super telephoto zoom lenses for the RF mount:

  • 200-1000mm F5.6-11 IS
  • 200-800mm F5.6-8 IS

From the patent literature:

To obtain a zoom lens whose entire system is compact and whose optical performance is suppressed from deteriorating due to focusing.

BACKGROUND ART

As an imaging optical system, a telephoto zoom lens having a long focal length at the telephoto end is known. (Patent Document 1) Such a zoom lens is required to be small, yet easy to perform high-speed focusing, and to suppress deterioration of optical performance due to focusing.

However, the zoom lens disclosed in Patent Document 1 has a large number of lenses in the fourth lens group, which is a focus group, and also has relatively strong refractive power. Therefore, it is difficult to simultaneously increase the speed of focusing and suppress deterioration in optical performance due to focusing.

SUMMARY OF THE INVENTION

Therefore, an object of the present invention is to provide a zoom lens whose entire system is small in size and whose optical performance is suppressed from deteriorating due to focusing, and an imaging device having the zoom lens.

Example 1

  • Focal length: 206.00-778.20
  • F value: 5.71-9.18
  • Half angle of view: 6.00-1.59
  • Image height: 21.64
  • Total length: 330.11-420.11
  • Back focus: 40.03-96.02

Example 2

  • Focal length: 200.00-998.33
  • F value: 5.71-11.00
  • Half angle of view: 6.17-1.24
  • Image height: 21.64
  • Total length: 346.80-456.78
  • Back focus: 43.85-105.49

Example 3

  • Focal length: 206.00-775.95
  • F value: 5.83-8.00
  • Half angle of view: 6.00-1.60
  • Image height: 21.64
  • Total length: 330.08-420.12
  • Back focus: 38.46-38.46

More Canon patents are listed here.

[via asobinet]

Canon Set To Release Two RF 35mm f/1.2L Lenses?

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 Canon rumor surfaced from the interweb of wet photography desires. Two 35mm f/1.2L lenses? Why not! One of them might be a “DS” version, like Canon did with the RF 85mm f/1.2L.

Without further ado, here is the rumor:

  • If the Canon RF 35mm F1.2L USM is released, it will likely become the best-selling L single focus lens. This lens has been rumored and anticipated since the RF mount’s inception five years ago.
  • A sales representative who sells Canon lenses to certain retailers in certain countries mentions the RF35mm F1.2 L USM and says that two models of this lens will be announced by the end of 2023. .
  • There are two models of the RF85mm F1.2L USM. You can get the “DS” version for a few hundred dollars more than the regular model. This function provides the effect of “improving” the blur.
  • Rumors about the release of such a lens have been going on for a long time, but this is the first direct information I’ve heard from someone I work with in the industry.

[via asobinet]

Canon EOS-1D X Mark III Firmware Update Released (version 1.8.0)

Canon EOS-1D X Mark III Manual

Canon released a firmware update for the venerable Canon EOS-1D X Mark III.

Canon EOS-1D X Mark III firmware update 1.8.0 delivers:

  1. Adds the ability to register the focus position in the preset functions of the CR-A100 Camera Remote Application.
    When used with the Robotic Camera System CR-S700R, it helps the user to focus on the intended subject distance when shooting.
  2. Adds the ability to erase voice memos added to images and to add voice memos to protected images.
  3. Adds enhanced security when transferring images via FTPS transfer.
  4. Fixes minor issues.

Canon EOS-1D X Mark III firmware 1.8.0 download at Canon Europe.

Canon EOS R6 Mark II Firmware Update Released (version 1.2.0)

Canon EOS R6 Mark II Review

Canon released a firmware update for the Canon EOS R6 Mark II, version 1.2.0.

Canon EOS R6 Mark II firmware update 1.2.0 brings:

  1. Adds support for the RF5.2mm F2.8 L Dual Fisheye lens.
  2. Adds enhanced security when transferring images via FTPS transfer.
  3. Adds support for the Software Development Assistance Kit (EDSDK/CCAPI).
  4. Fixes minor issues.

Canon EOS R6 Mark II firmware version 1.2.0 download at Canon Europe.

Canon EOS R5 Firmware Update Released (version 1.9.0)

Eos R5 8k Video

Canon released a firmware update for the Canon EOS R5, version 1.9.0.

Canon EOS R5 firmware version 1.9.0 brings:

  1. It is now possible to delete only the voice memo attached to an image. It is also now possible to add or add voice memos to protected images.
  2. We have strengthened the security when sending captured images using FTPS transfer.
  3. Added support for the software development support kit (EDSDK/CCAPI) for digital cameras.
  4. Fixed an issue where, in rare cases, camera operations would become ineffective after touch operations, and [BUSY] would be displayed even when the camera was operated.
  5. Fixed minor bugs.

Canon EOS R5 firmware version 1.9.0 download at Canon Japan.