Canon Photography News and Rumors

A patent for a Canon RF 70-150mm f/1.8 was filed by Canon inc. was found. The details are below:

overview

• [Publication number] JP2024-154138 (P2024-154138A)
• [Release date] October 30, 2024 (2024.10.30)
• [Name of invention] Zoom lens and imaging device
• [Application date] April 18, 2023 (April 18, 2023)
• [Applicant]
  [Identification number] 000001007
  [Name or company name] Canon Inc.
• To provide a large-aperture zoom lens that is compact yet has high optical performance.
• In recent years, in digital still cameras and video cameras, the number of pixels in solid
  –
  state image sensors such as CCD and CMOS sensors has increased, and therefore optical systems used in image pickup devices using these image sensors are required to have high optical performance. Furthermore, large-aperture zoom lenses are required to take advantage of the blur effect.
• [0005] If the diameter of the zoom lens of Patent Document 1 is increased further, the positive lens group in the focus group will become larger in the outer diameter direction, making it difficult to sufficiently miniaturize the zoom lens by using an actuator
  or the like that is arranged on the outer periphery of the positive lens group.

Example 1

• Focal length: 72.10-145.50
• F-number: 2.05
• Half angle of view: 16.70-8.46
• Image height: 21.64
• Overall length: 227.00
• Back Focus: 13.99

Example 4

• Focal length: 72.10-194.00
• F-number: 2.91
• Half angle of view: 16.70-6.36
• Image height: 21.64
• Total length: 221.00
• Back Focus: 17.04

Example 6

• Focal length: 72.10-145.50
• F-number: 1.89
• Half angle of view: 16.70-8.46
• Image height: 21.64
• Total length: 240.00
• Back Focus: 14.34

via asobinet