Canon Patent: A Lens With A Built-In Conversion Lens

Canon Patent

Hope I got this Canon patent right. To me it seems to be a lens with a built-in conversion lens. Am I wrong?

Canon patent application 2023066205 (Japan, published: 5/15/2023) discusses optical formulas and methods for a lens with a construction that allows for a built-in conversion lens.

From the patent literature:

A large space is required to insert or withdraw a conversion lens inside an optical device, making it difficult to miniaturize the optical device.

SOLUTION: The optical apparatus rotates around a rotation axis perpendicular to the optical axis of the first lens group and the first lens group, and retreats from the optical axis, thereby changing the focal length range of the optical system. a second lens group that changes from the second focal length range to the first focal length range, wherein the second lens group is on both sides of a plane that is perpendicular to the rotation axis and passes through the optical axis. The center of the rotation shaft is positioned on the same side as the direction in which the is withdrawn.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to optical equipment capable of changing the focal length range of a master lens by inserting or retracting a built-in conversion lens.
2. Description of the Related Art: In optical equipment such as digital cameras, video cameras, and interchangeable lenses, a conversion lens is inserted into an optical path to change a first focal length range to a telephoto side or a wide-angle side. 2 focal length ranges are known.
[…] The built-in conversion lens is retracted into the space between the prism that guides the subject image to the finder and the strobe that is stored above the lens barrel.
However, the configuration described in Patent Document 1 can only be applied to a kind of integrated lens type camera having a prism and a strobe. For this reason, it has been difficult to suppress the increase in size of cameras and interchangeable lenses that do not have at least either a prism or strobe.
Accordingly, the present invention provides an optical apparatus that has a built-in conversion lens so that a space for inserting or withdrawing the built-in conversion lens can be secured while suppressing an increase in the size of the lens. for the purpose.

[via asobinet]

Here Is The Canon PowerShot V10 (officially announced)

Powershot V10

We knew it would get announced, and now it is. The Canon PowerShot V10.

At a glance:

  • For Vlogging and Live Streaming
  • 20.9MP 1″ CMOS Sensor
  • UHD 4K up to 29.97 fps
  • Full HD up to 59.94 fps
  • 19mm Equivalent Wide-Angle Lens
  • Web Camera Compatible with UVC Support
  • 460,000-Dot 2″ Touchscreen LCD
  • Wi-Fi & Bluetooth Connectivity
  • Vertical Capture Capable
  • Built-In 30° Stand

Preorder are live at B&H Photo and Adorama (starting at $429).

Canon press release:

Realize New Video Communication With the Canon Powershot V10 Vlog Camera and the Introduction of the Powershot V Camera Series

MELVILLE, NY, May 11, 2023 – If you’ve picked up your smartphone in the last few minutes, chances are you’ve viewed a video via a social media platform. From the YPulse 2023 Social Media Behavior Report, 59% of Gen Y/Z say they create their own social media content for a broader audience than just their friends and family. As video content continues to absorb our attention for work and leisure, Canon U.S.A., Inc., a leader in digital imaging solutions, today announced the new PowerShot V10 Vlog Camera, the first product in the Company’s new consumer video production, live streaming and vlogging line, the PowerShot V (V= Video Communication) camera series.

The PowerShot V10 Vlog Camera has in mind the on-the-go content creator who wants to level-up their creative content and step-up from using a smart phone. Packed with key features, including an intuitive control user interface on the touch panel and frame AF mode for product reviews, the PowerShot V10 Vlog Camera can be the priority piece of imaging equipment used for almost all things video.

Additional features include:

  • Compact and lightweight design, 211g/ 63 x 90 x 34 mm
  • 4K UHD 30P, Full-HD 60p
  • 19mm wide lens which is ideal for selfie taking
  • Smartphone-like handling and style with vertical grip, easy for one-handed operation
  • 1” CMOS sensor lens helps to enable low-noise video quality in dark areas
  • Webcam capability (UVC/UAC), horizontal only
  • Live Streaming via Camera Connect app
  • Auto upload of content via
  • Face-tracking AF designed to automatically detect and autofocus on a person’s face
  • Image stabilization
  • Two high-quality stereo microphones and a third microphone for background noise reduction

There is no shortage of usage cases for the PowerShot V10 Vlog Camera. Traveling? The camera is super compact and includes a built-in stand, a port for a tripod and a microphone. Live streaming for gaming? You can easily connect the vlogging camera to a Wi-Fi® router and output video directly to YouTube or Facebook platforms via the Camera Connect app1. Haven’t experienced a traditional DSLR or mirrorless camera before? The PowerShot V10 Vlog Camera is intuitive like a smartphone – making the transition from smartphone to the camera fairly seamless.

With the introduction of the new Canon PowerShot V Series of cameras, the Company continues to reinforce its commitment to the ever-changing needs and wants of customers. If you’d like to be part of the conversation, join the Canon Community to ask questions, share knowledge and connect with others.

Pricing and Availability

The PowerShot V10 Vlog Camera is anticipated to be available in June for an estimated retail price of $429.99. For more information, please visit

Here Is The Nikon Z 8 (officially announced, $3996)

Nikon Z 8

Nikon announced the Nikon Z 8, a rather interesting mirrorless all-rounder camera.

At a glance:

  • 45.7MP FX-Format Stacked CMOS Sensor
  • Lightweight Design, 30% Smaller than Z9
  • 8.3K 60p N-RAW, 4.1K 60p ProRes RAW
  • 8K30p and 4K120p Video, 10-Bit Internal
  • Up to 20 fps Raw, 30 fps JPEG Shooting
  • 493-Point AF, AI-Based Subject Detection
  • Blackout-Free Real Live Viewfinder
  • 3.2″ 4-Axis Tilting Touchscreen LCD
  • CFx Type B & SD Memory Card Slots
  • 5 GHz Wi-Fi and Bluetooth

You can preorder the Nikon Z 8 for $3,996 at B&H Photo or Adorama.

If you preorder the Nikon Z8 Mirrorless Camera with 24-120mm f/4 Lens, then B&H Photo offers a $200 instant discount.

Nikon press release:

The functionality and performance of Nikon’s flagship mirrorless camera, condensed into an agile body

TOKYO – Nikon Corporation (Nikon) is pleased to announce the release of the full-frame/FX-format Nikon Z 8 mirrorless camera.

The Z 8 condenses the advanced functionality and performance of the flagship Nikon Z 9 into a compact and lightweight body while also maintaining superior robustness and reliability. The Z 8 is ideal for a variety of image creators who seek new possibilities for visual expression in a wide range of genres and subjects, such as landscapes, wild birds, airplanes, portraits, and weddings. Whether shooting stills or video, the excellent agility of the Z 8 enables nimble camerawork, realizing superior operability that allows users to push their creativity further. On top of this, its reliable performance allows users to capture decisive moments and achieve outstanding image depiction.

Nikon will continue to pursue a new dimension in optical performance while meeting users’ needs, contributing to the development of imaging culture, with the hope of expanding possibilities for imaging expression.

Primary features

1. Comfortable operability that is ideal for diverse shooting situations

The advanced functionality and performance of the Z 9 are incorporated into a compact camera body that is approx. 30% smaller than the flagship model. The downsized body has been engineered to retain the easy-to-hold grip as well as comfortable operability. This enables agile and stable camerawork in a wide variety of shooting scenes, even with a super-telephoto lens attached. In addition, the 4-axis tilting monitor delivers high operability when shooting from high and low angles in both horizontal and vertical positions.
For video recording, the Z 8 can record 12-bit RAW and 10-bit Apple ProRes 422 HQ video in-camera, allowing users to take advantage of a minimal video recording system that does not require an external recorder. The flexible combinations of shooting equipment suit various shooting styles to streamline operations. With the MC-N10 Remote Grip (sold separately) attached, solo videographers can take advantage of having more control over how they can operate the camera — in a way that was previously difficult on their own. Furthermore, by taking advantage of the wide-ranging accessory lineup and high compatibility with products from accessory brands, users can operate the Z 8 as comfortably as if it were a dedicated video camera.

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