Canon RF135mm F1.8 L IS USM: B&H Photo / Amazon / Adorama
Canon filed a patent for a Canon RF135mm f/2 that has been found. Canon currently has a Canon RF135mm F1.8 L IS USM that is very expensive so a f/2 lens without IS could be an affordable option in the future.
overview
- [Publication number] P2024133316
- [Release date] 2024-10-01
- [Title of Invention] Optical system and imaging device having the same
- [Application date] 2024-07-19
- [Show division] Division of P 2020148705
[Original application date] 2020-09-04 - [Applicant]
[Identification number] 000001007
[Name or company name] Canon Inc. - [Background Technology]
[0002]
Patent Document 1 discloses an optical system in which various aberrations such as chromatic aberration are effectively corrected by appropriately arranging a positive lens made of a material with a small Abbe number (high dispersion material). - [0008] According to the present invention
, it is possible to provide an optical system and an imaging device which are small in size and in which various aberrations such as chromatic aberration are well corrected.
Example 1
- Focal length: 130.77
- F-number: 2.06
- Half angle of view: 9.39
- Image height: 21.64
- Overall length: 132.51
- Back focal length: 25.26
Example 4
- Focal length: 130.46
- F-number: 2.06
- Half angle of view: 9.42
- Image height: 21.64
- Overall length: 146.16
- Back focal length: 17.93
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