Canon Patent: 35mm f/1.3 Lens With Very Short Back Focus

Canon Patent
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A new Canon patent was spotted. Will this lens ever hit the shelves? Unlikely in our opinion.

Canon patent application 2023077336 (Japan, published 6/5/23) discusses optical formulas for a 35mm f/1.3 lens.

An object of the present invention is to realize an optical system capable of reducing ghosts in a desired wavelength region in spite of having a large aperture and a small lens.

BACKGROUND OF THE INVENTION

1. Field of the Invention
The present invention relates to an optical system and the like, and is suitable for imaging apparatuses such as digital video cameras, digital still cameras, broadcast cameras, surveillance cameras, cameras for wearable devices, and cameras for mobile devices.

2. Description of the Related Art
There is a demand for a high-performance optical system that reduces the occurrence of ghosts and flares. In order to reduce the occurrence of ghosts and flares, a method of providing an antireflection film on the lens surface is known.
In recent years, optical systems have become larger in diameter and smaller in size, and the opening angle of lenses tends to increase. However, due to problems in manufacturing the antireflection film, the antireflection effect in the periphery of the lens with a large opening angle may be inferior to the antireflection effect in the position on the optical axis.

SUMMARY OF THE INVENTION

Accordingly, it is an object of the present invention to provide an optical system capable of reducing ghosts, particularly in a desired wavelength region, while having a large aperture and a small lens.

Example 1

  • Focal length: 12.40
  • F-value: 1.30
  • Half angle of view: 32.82
  • Image height: 8.00
  • Overall length: 21.76
  • Back focus: 0.44

Example 2

  • Focal Length: 33.53
  • F-value: 1.30
  • Half angle of view: 32.83
  • Image height: 21.64
  • Overall length: 61.97
  • Back focus: 0.29

More Canon patent applications are listed here. Some particularly interesting patent applications we think might get into production are these:

Canon Firmware Updates – EOS R6, R6 II, R7: Better Touchscreen Operations

Canon Eos R7 Review Canon Firmware Updates
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Canon firmware updates for the Canon EOS R6, EOS R6 Mark II, and EOS R7.

The firmware update improves the stability of operation control when touch operation is set to “sensitive”.

EOS R6 Mark II Firmware Version 1.1.2

  • Improved the stability of touch operation control when touch operation is set to “sensitive”.
  • Fixed the phenomenon that only one battery may be charged when the Battery Grip BG-R10 is attached.

EOS R6 Firmware Version 1.8.2

  • Improved the stability of touch operation control when touch operation is set to “sensitive”.
  • Fixed minor bugs.

EOS R7 Firmware Version 1.3.1

  • Improved the stability of touch operation control when touch operation is set to “sensitive”.

Canon EOS R8 Dynamic Range Graphs Published (same same as R6 II, R5, R3)

Canon EOS R8
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Specialised site Photons To Photos posted their Canon EOS R8 dynamic range test results.

EOS R8 at a glance:

  • 24.2MP Full-Frame CMOS Sensor
  • 4K60p 10-Bit Internal Video, Canon Log 3
  • 2.36m-Dot OLED Electronic Viewfinder
  • 3.0″ 1.62m-Dot Vari-Angle Touchscreen
  • Dual Pixel CMOS AF II
  • 40 fps Electronic Shutter
  • Movie Digital IS
  • Vertical Movie Mode
  • Microphone Input, Headphone Output
  • Multi-Function Shoe, Wi-Fi & Bluetooth

As you can see in the image on top, the dynamic range of the Canon EOS R8 is very close to the DR of its more expensive siblings, the EOS R6 II, EOS R5, and the current top of the line EOS R3. That’s a sound result for the EOS R8.

All Canon EOS R8 coverage is listed here.

The Canon EOS R8 is in stock and ready to ship at B&H Photo, Adorama and Amazon.

Canon EOS R8 world-wide preorder:

America: B&H Photo, Adorama, Amazon USA, Amazon Canada, Canon Canada, Canon USA
Europe & UK: Amazon DE, Amazon UK, Amazon IT, Wex Photo Video, Canon DE, Canon UK

Click here to open the rest of the article

Today Only: Sigma 12-24mm f/4 DG HSM Art Lens (EF mount) – $899 (reg. $1599)

Sigma 12-24mm
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Only for today (5/24/2023) B&H Photo has a whooping $700 discount on the awesome Sigma 12-24mm f/4 DG HSM Art lens for Canon EF mount.

At a glance:

  • EF-Mount Lens/Full-Frame Format
  • Aperture Range: f/4 to f/22
  • Five FLD Elements, One SLD Element
  • Three Aspherical Elements
  • Super Multi-Layer Coating
  • Hyper Sonic Motor AF System
  • Rounded 9-Blade Diaphragm
  • Built-In Lens Hood

Get the Sigma 12-24mm f/4 DG HSM Art lens for Canon EF mount on sale at $899. Compare at $1,599.

If you want to learn more about this fantastic Sigma lens, have a look at Dustin Abbott‘s video-review below.

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Here Is The Canon EOS R100, Officially Announced (with RF 28mm f/2.8 STM)

Canon EOS R100
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We knew it was coming, and here it is: the new, entry-level Canon EOS R100.

At a glance:

  • 24.1MP APS-C CMOS Sensor
  • DIGIC 8 Image Processor
  • 4K 24p Video with Crop, Full HD 60p
  • Dual Pixel CMOS AF with 143 AF Zones
  • 6.5 fps Electronic Shutter
  • 2.36m-Dot OLED EVF
  • 3″ 1.04m-Dot LCD Screen
  • Creative Assist Mode
  • Wi-Fi and Bluetooth with SD Card Slot

The Canon EOS R100 preorders are live and start at $479: B&H Photo | Adorama

Canon RF 28mm f/2.8 STM preorders: B&H Photo | Adorama

Canon press release:

Canon Introduces its Most Affordable, Compact, and Lightweight EOS R Camera Ever: The EOS R100

The Company Also Announced the Wide-Angle “Pancake” Style RF28mm F2.8 STM Lens

MELVILLE, N.Y., May 24, 2023 – Canon U.S.A., Inc., a leader in digital imaging solutions, is excited to announce the launch of the EOS R100 camera and RF28mm F2.8 STM lens, two new affordable, compact, and lightweight tools for entry-level and emerging content creators to elevate their skills.

The Canon EOS R100 camera was designed for new, first-time mirrorless camera or existing interchangeable camera users who previously enjoyed EOS Rebel or EOS M cameras. The camera touts key features such as a 24.2 megapixel APS-C size sensor, the DIGIC 8 image processor, 4K (Cropped) and Full HD (Full-Width) video at up to 24 and 60 frames-per-second respectively, Autofocus with eye and face detection, and Bluetooth™ and Wi-Fi® connectivity capabilities. For users who are making the EOS R100 their first interchangeable lens (ILC) camera, a significant advantage over using a smartphone camera will be lens selection. The EOS R100 is compatible with the complete lineup of RF and RF-S lenses, and EF and EF-S lenses can be utilized when using one of three available Canon EF-EOS R mount adapters (each sold separately). This selection of lenses includes the Canon RF28mm F2.8 STM lens, which was also announced today.

Canon EOS R100

The Canon RF28mm F2.8 STM is a “pancake” style, value lens that targets a wide variety of users, from amateur to enthusiast Full-Frame and APS-C camera users. Key features of the new lens include:

  • Minimum focusing distance of 9.1 inches (0.23m) and a maximum magnification of 0.17x 
  • Retracting feature that helps to shorten the overall length of the lens
  • Circumferential manual focus mode/control ring selector
  • Gear-type STM motor providing smooth autofocusing while capturing video
  • Built-in Control Ring provides quick access to multiple camera controls
  • 7-blade circular aperture helps to provide beautifully blurred background and bokeh

And finally, a review by Gordon Laing.

How To Visit ANY Site Without Getting Annoyed By Ads (and trackers)

Ads
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Are you annoyed by ads and trackers? Of course you are. Do you want to get rid of them? Of course you do. I have you covered with a set of simple instructions.

I would like to show you how you can surf any site without ads and trackers bothering you. This applies also to those sites that ask money for a supposedly “pro” experience on their site (i.e. without ads). You do not need to spend any money for that. Let me show you how. It’s easy and you do not need to be a hacker to do it.

I show you how to do it using the Firefox browser, but it can easily be adapted to other browsers too. We use two Firefox extensions to block ads and trackers, and one to get rid of annoying cookie-acceptance banners (and of banners that ask you to pay and try to hide the possibility to navigate the site without paying). The three extensions are:

  1. Privacy Badger: Privacy Badger is a browser extension that helps to protect your privacy while browsing the web. It automatically learns to block invisible trackers and advertisers who do not respect the “Do Not Track” setting in your browser. By blocking these trackers, Privacy Badger prevents advertisers and other third-party trackers from secretly tracking your browsing habits.
  2. uBlock Origin: uBlock Origin is an efficient and lightweight ad blocker that not only blocks ads but also helps protect your privacy by blocking trackers. It offers a wide range of filter lists and allows users to create custom rules for enhanced control. The extension helps to improve browsing speed and reduces the risk of malware infections by blocking malicious content.
  3. I Don’t Care About Cookies (optional): This extension helps you get rid of annoying cookie consent notices on websites. While cookies are essential for many websites to function properly, the constant pop-ups and consent requests can be disruptive. “I Don’t Care About Cookies” simplifies your browsing experience by automatically accepting or hiding cookie notices (it always tries first to accept only the necessary cookies).

All three extensions are free of costs, serious and trustworthy, and can be used without concerns. All three extensions work “out of the box” with standard settings. That said, let’s now move on to the step-by-step tutorial to install these extensions in the Firefox browser:

Step 1: Open Firefox
Launch the Firefox browser on your computer.

Step 2: Access the Firefox Add-ons Manager
Click on the menu button (three horizontal lines) in the upper-right corner of the browser window, and then click on “Add-ons and Themes” or simply press Ctrl+Shift+A to open the Add-ons Manager.

Step 3: Search for the extensions
In the Add-ons Manager, type “Privacy Badger” in the search bar and press Enter. Repeat this process for “uBlock Origin” and “I Don’t Care About Cookies” in separate searches.

Step 4: Install Privacy Badger (after having it searched as in step 3)
Locate “Privacy Badger” in the search results, click on it, and then click on the “+ Add to Firefox” button. A prompt will appear, click “Add” to confirm the installation. After successful installation, you’ll see a Privacy Badger icon in your browser’s toolbar.

Step 5: Install uBlock Origin (after having it searched as in step 3)
Locate “uBlock Origin” in the search results, click on it, and then click on the “+ Add to Firefox” button. A prompt will appear, click “Add” to confirm the installation. After successful installation, you’ll see a uBlock Origin icon in your browser’s toolbar.

Step 6: Install I Don’t Care About Cookies (after having it searched as in step 3)
Locate “I Don’t Care About Cookies” in the search results, click on it, and then click on the “+ Add to Firefox” button. A prompt will appear, click “Add” to confirm the installation. After successful installation, you’ll see an “I Don’t Care About Cookies” icon in your browser’s toolbar.

…and you are done.

Now, you’ve successfully installed all three extensions in your Firefox browser. Be sure they are all three activated. They will automatically start blocking ads, trackers, and silently bypass cookie banners, providing you with a more streamlined browsing experience. Not bad, eh? Now try it out on some sites you know are pestering you with ads and similar s**t.

Enjoy an ad- and tracker-free Internet experience, for free :-)