Canon Patent For Eye-Controlled Focus For Mirrorless Cameras

Eye-controlled Focus

A technology already seen on Canon film cameras might come to last generation mirrorless camera technology, sooner or later.

Canon patent application US20210051265 (USA) discusses how to implement eye-controlled focus on a mirrorless camera.

An image capture apparatus detects a subject in a captured image. The image capture apparatus further recognizes its user based on an eyeball image of the user. The image capture apparatus then selects a main subject area from among the detected subject areas, based on information regarding subjects captured in the past and stored being associated with the recognized user.

There is a significant difference if compared with the eye-controlled focus technology used inn the old days for film cameras. The patent discusses some sort of intelligent algorithm that not only recognizes the user but also remembers where the user looked and how frequently.

We think the technology discussed in the patent might get into production within the next years. More Canon patents are listed here. Some particularly interesting patent applications we think might get into production are these:

Source: Canon Rumors

Canon Patent: Quad Pixel Autofocus Imaging Sensor

Quad Pixel

Dual Pixel AF was true innovation when first launched by Canon on the EOS 70D. It’s just common sense to assume Canon will develop it further. Welcome Quad Pixel AF.

Here is a Canon patent for a Quad Pixel AF imaging sensor, and it is not the first we spotted. Canon patent application 2020-171060 (Japan) discusses the technology. It’s hard to say when we will see the first commercial Quad Pixel AF sensor. But we know it is coming.

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

Deal: Datacolor SpyderLensCal Autofocus Calibration Aid – $39 (reg. $69, today only)

SpyderLensCal Autofocus Calibration Aid

Only for today (10/23/20) B&H Photo has a 43% discount on the Datacolor SpyderLensCal Autofocus Calibration Aid.

Get the Datacolor SpyderLensCal Autofocus Calibration Aid on sale at $39. Compare at $69. While $39 will likely not break your bank, there is an even less expensive way to calibrate autofocus on your lens.

Datacolor SpyderLensCal key features:

  • Fast, easy solution for your interchangeable lenses and recent DSLR bodies provides razor-sharp auto-focusing, using modern DSLR autofocus micro-adjustment technology
  • Compact, lightweight and durable, with integrated level and tripod mount, making this the most convenient way to adjust your own camera gear
  • Save time and hassle of sending your equipment in for service. Now you can check or calibrate your own lenses
  • Accurate and repeatable calibration of your lenses and recent DSLR bodies
  • Worthwhile investment to ensure your camera is focusing your lenses as precisely as possible

The SpyderLensCal Autofocus Calibration Aid from Datacolor is a focus test chart, designed for use with select DSLRs that support autofocus adjustment. The chart allows you to test the autofocus accuracy of your camera, making it easy to fine-tune it for optimum performance.

The SpyderLensCal features a built-in level and tripod mount, allowing you to create precise testing environments. Cameras that support autofocus adjustments such as the Canon 5D Mk II, 5D Mk III, 1D Mk III, 1D Mk IV, and 1Ds Mk III, as are supported. Please consult your owner’s manual to confirm that your camera supports autofocus adjustment.


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How To Calibrate Lens Autofocus Without Expensive Tools

How To Calibrate Lens Autofocus

Is your lens back- or front-focusing? Don’t despair, you can calibrate the lens without expensive and complicated tools. Here is how to calibrate lens autofocus.

Karl Taylor posted a short video where he explains well how to proceed to calibrate your lens. He says:

Have you ever noticed your lens isn’t always pin-sharp when using autofocus? This lens autofocus problem can happen because lenses can drift over time. You want your autofocus to be pin-sharp – I demonstrate how to simply calibrate your lens autofocus without needing to buy a lens calibration tool or calibration chart.

All you need to accomplish it is:

  • A piece of whiteboard
  • A standard ruler
  • A pen or pencil
  • The lens for calibrating
  • Your camera with tripod

And here is the 5 minutes video explaining how to calibrate your lens:

More tips and tricks are listed here.

How To Do Autofocus Microadjustment On Your Lens (tutorial)

Autofocus Microadjustment

Here is something useful. A video about hot to do autofocus microadjustment.

The 14 minutes video below by Michael The Maven shows how to microadjust autofocus on your lens using a cereal box and a ruler. He uses a Canon EOS 90D to show it.

The cereal box and ruler method allows photographers to quickly visualize where their lenses are focusing and to verify if they are out of alignment. This video demonstrates the philosophies of MFA (micro focus adjustment) and some of the principles to become familiar with if you decide to try this on your own.

If you prefer there is a neat written tutorial about how to do autofocus microadjustment by Canon itself and you can download it here.

Let’s Talk Eye-controlled Autofocus On Canon Cameras

Eye Controlled Autofocus

Recently a Canon patent application was spotted that discussed technologies for an eye-controlled autofocus system. Something Canon already offered back in the film days with the Canon EOS 3.

Taking inspiration from the above patent, DPReview TV’s Chris and Jordan consider what a modern eye-controlled AF system might mean to photographers. The following topics are discussed in the 5 minutes video below:

  • The Canon EOS 3
  • Eye-controlled AF
  • Eye-controlled AF challenges
  • How a new eye-controlled AF system could work
  • Selecting faces and eyes
  • Do we need updated eye-controlled AF?

Enjoy.