Canon Addict

Canon 50mm F1.5 and 32mm F0.75 Patents Found

By Louis Ferreira | Published: March 28, 2025

Patents for a Canon 50mm F1.5 and Canon 32mm F0.75 lens were found

overview

[Publication number] P2025040503
[Release date] 2025-03-25
[Title of invention] Optical system and imaging device
[Application date] 2023-09-12
[Applicant]
[Identification number] 000001007
[Name or company name] Canon Inc.
A compact optical system and an imaging device having high optical performance over a wide focus range are provided.
[Background Art]
[0002]
In recent years, the importance of miniaturizing optical systems has increased due to the spread of smartphones and the shift from single-lens reflex cameras to mirrorless cameras in the high-end camera market. Patent Document 1 discloses a compact optical system (polarized reflective imaging system) equipped with a polarizing element and a half mirror.
[0004]
The optical system disclosed in Patent Document 1 has a dark F-number of 2.85. Because the polarized reflective imaging system has a structure in which the amount of light when randomly polarized light is incident is 1/8, it is necessary to make the F-number brighter than that of a normal optical system. In addition, the optical system disclosed in Patent Document 1 does not have good aberrations when focusing and cannot increase the shooting magnification, so it is not possible to achieve high optical performance over a wide focus range.
SUMMARY OF THE PRESENT EMBODIMENTS [0005]
It is therefore an object of the present invention to provide a compact optical system having high optical performance over a wide focus range.
EFFECT OF THE PRESENT DISCLOSURE
According
to the present invention, it is possible to provide a compact optical system having high optical performance over a wide focus range.

Example 1

Focal length: 48.00
F-number: 1.50
Half angle of view: 24.26
Image height: 21.64
Back focus: 0.10

Example 2

Focal length: 32.00
F-number: 0.75
Half angle of view: 24.37
Image height: 14.50
Back focus: 0.10

Example 3

Focal length: 32.00
F-number: 0.95
Half angle of view: 24.38
Image height: 14.50
Back focus: 0.10

Example 4

Focal length: 21.65
F-number: 0.95
Half angle of view: 33.81
Image height: 14.50
Back focus: 0.11

Example 7

Focal length: 17.38
F-number: 0.95
Half angle of view: 39.84
Image height: 14.50
Back focus: 0.10

Example 15

Focal length: 100.00
F-number: 2.00
Half angle of view: 7.70
Image height: 13.52
Back focus: 0.10

Example 24

Focal length: 35.50
F-number: 0.95
Half angle of view: 31.36
Image height: 21.64
Back focus: 0.10

Example 25

Focal length: 50.00
F-number: 0.95
Half angle of view: 23.40
Image height: 21.64
Back focus: 0.10

via asobinet

Posted in Patents | Tagged Canon 32mm f/0.75, Canon 32mm F0.75, Canon 50mm f/1.5, Canon 50mm F1.5 | Comments closed

Canon RF 20mm f/1.4 L VCM Announced

By Louis Ferreira | Published: March 26, 2025

Canon RF 20mm f/1.4 L VCM: B&H Photo / Adorama

Canon RF 20mm f/1.4 L VCM was announced, and preorders start today.

Canon RF 20mm f/1.4L VCM Overview

Ultra-Wide for Hybrid Creators
Designed to satisfy both photographers and videographers’ needs, the Canon RF 20mm f/1.4 L VCM is a fast ultra-wide-angle prime lens with a function-first build that caters to the hybrid nature of modern image-making, emphasizing high image quality, responsive AF, minimized focus breathing, and intuitive, silent, and customizable handling.

Optimized for Photo
Suiting nature, landscape, architecture, interior, and street photography applications, this ultra-wide prime offers a huge angle of view that enables making strong, dynamic compositions with an exaggerated sense of space and foreground.

Impressively fast f/1.4 maximum aperture affords control over depth of field and also greatly benefits low-light shooting, making this an ideal lens for astrophotography applications.
Optical design includes ultra-low dispersion (UD) and Blue Spectrum Refractive Optics (BR) elements to reduce chromatic aberrations for impressive clarity and color accuracy.
Air Sphere (ASC) and Subwavelength structure (SWC) coatings reduce flare and ghosting for improved contrast.
Contrasting the ultra-wide field of view, this lens also excels with close-up subjects thanks to a 7.9″ minimum focusing distance and 0.19x maximum magnification.
Rounded 11-blade diaphragm creates a smooth, rounded out-of-focus rendering.

Optimized for Video
When used for video applications, the lens’s ultra-wide field of view and close-focusing design can be paired with motion to create especially dynamic scenes.

Manual aperture ring with de-click switch to make smooth, silent iris pulls.
Focus breathing is especially well-controlled, helping to maintain a consistent composition and field of view when racking focus.
Linear focus motor for intuitive manual focus control.
Matched design with other Hybrid series primes; all lenses have the same 67mm front filter ring and general size for ease in rigging and working with multiple lenses on a shoot.

VCM and Nano USM Autofocus
The focusing system has also been tuned to suit both photo and video tasks, offering a useful mixture of speed and control.

Nano Ultrasonic Motor (USM) is used to control a floating focusing system while a Voice Coil Motor (VCM) adjusts a rear focusing group; together, these two systems offer an ideal mixture of speed and quiet performance that is especially beneficial to video recording.
Floating focus design also helps to maintain consistent image quality throughout the focusing range, from 7.9″ to infinity.
AF/MF switch and full-time manual focus override for intuitive focus control when needed.

Design Details
Despite being a fast ultra-wide lens, this 20mm f/1.4 remains relatively compact and lightweight for regular use. Its design and size is matched to the other Hybrid lenses and is built for everyday use for a wide range of shooting applications.

Effectively the same dimensions (3 x 3.9″) and weight (1.1 lb) as other Hybrid series prime lenses; these lenses also share a 67mm front filter ring diameter.
Included filter holder attaches to the rear of the lens and accepts pre-cut gel filters; this is ideal for scenarios when more than one filter might be needed or if one filter will be used for a sustained amount of time.
In addition to the manual aperture ring, this lens has a customizable Control Ring and Function Button, which can be programmed to control a range of shooting settings.
L-Series level durability and weather resistance for working in inclement conditions.

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Posted in Canon Lenses | Tagged Canon RF 20mm f/1.4 L VCM, Canon RF 20mm F1.4 L VCM | Comments closed

Canon RF-S 14-30mm f/4-6.3 IS STM PZ Announced

By Louis Ferreira | Published: March 26, 2025

Canon RF-S 14-30mm f/4-6.3 IS STM PZ:B&H Photo / Amazon / Adorama

Canon RF-S 14-30mm f/4-6.3 IS STM PZ was announced, and preorders start today.

Canon RF-S 14-30mm f/4-6.3 Overview
A versatile, video-ready zoom in a compact package, the Canon RF-S 14-30mm f/4.5-6.3 IS STM PZ Lens is made specifically for use as a kit lens for the APS-C-format R50 V mirrorless camera, where it delivers a wide-angle to short telephoto equivalent zoom range of 22-48mm. Fully compatible with any other RF-mount body, the lens has both power zoom functionality and image stabilization to deliver optimal results when shooting video.

Canon has taken care with the optical design, using two aspherical elements, an ultra-low dispersion element, and Super Spectra Coating to minimize aberrations and reduce ghosting and flare. The small form factor and 5.9″ minimum focus distance make it useful for intimate portraits in tight spaces. The built-in image stabilizer will also work with Movie Digital IS in compatible bodies like the R50 V. Additionally, the lead screw-type STM AF system is fast enough to keep up with speedy continuous focus while being smooth and quiet enough to work for video.

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