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Canon Working AF Phase and Contrast AF Calibration, Hybrid Viewfinders

Canon Working Hybrid Viewfinder and advance AF systems,  the screen shot of new Hybrid Viewfinder is on your screen, That will display additional information while getting AF done. Canon is also working to enhance the Phase and Contrast based AF system collaboration. Both will all together when you are using viewfinder of the DSLR. These patents are published in Japanese language so its bit hard to get everything from it.

Also see – Canon Patent: More Improved Touch Display Screen

Canon Working AF Phase and Contrast AF Calibration Patent Details

Application JP2018088400A events – 2018-05-01
Application filed by キヤノン株式会社, Canon Inc – 2018-05-01
Priority to JP2018088400A – 2018-09-13
Publication of JP2018142007A – 2019-02-26
Application status is Pending

Patent details: To enable focus calibration for focus detection based on phase difference detection to be achieved simply and efficiently for even a general subject without using a dedicated chart.SOLUTION: The present invention comprises: an imaging unit for photoelectrically converting a subject image formed by a photographic optical system and generating an image signal; a phase difference detection unit for detecting, on the basis of a pair of image signals of the subject image, a first in-focus position of a focus lens included in the photographic optical system by means of phase difference detection; a contrast detection unit for detecting a second in-focus position of the focus lens by means of contrast detection using the image signal; a calibration unit for correcting the first in-focus position using a correction amount calculated from a difference between the second in-focus position and the first in-focus position; and a subject determination unit for determining whether or not the subject image is suitable for detection of the in-focus position by the phase difference detection unit or the contrast detection unit before or during the calibration performed by the calibration unit.

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Canon Patent: More Improved Touch Display Screen

Canon working to improve user experience by improving the touch display interface of the camera. This patent talks about improving user experience while reviewing the image. Patent document describes the camera will maintain the same zoom ratio even when slide to another image and lot’s of other improvement.

We think these are minor updates and can be implemented to existing touch display screens via a simple firmware update too. See more Canon Patent

Google translate

In the digital camera equipped with recent touch panel, changes the magnification, but the movement of the expansion position can be performed by touch operation, no means for switching to another image while maintaining the expanded position, efficiently focus confirmation was not performed.
In view of the problems described above, and an object thereof to be able to switch smoothly while maintaining the expanded position by the touch operation to the other images.

The display control device of the present invention includes: a touch detection means for detecting a touch operation on the display unit, a larger display means an enlarged display partial range of the image displayed on the display area of ​​said display means, said display means when the first image is enlarged and displayed, the touch of only one point, that the touch position of the one point only before the predetermined time elapses since the touch of the only one point has moved Correspondingly, changes the display range of the first image, when the first image on the display unit is enlarged and displayed, the touch of only one point, since the touch of the one point only the touch position after the elapse of the predetermined time the point only in response to the movement, the enlarged image switching display of the display unit, the enlarged display of the second image from the enlarged display of the first image and control means for controlling to perform the feed Characterized in that it.

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Canon 25-300mm Lens Patent for Mirrorless Camera

Recent patent we have seen Canon is working on super zoom lenses for its Fullframe Mirrorless and Fullframe DSLRs camera. One of the most  the most important attractive then we have seen is the 25 to 300 mm lens which covers Almost 90% of starting from Wide Angle shots to telephoto.

Canon Fullframe Mirrorless Lens Patent

1.Focal distance: 29.22  – 350.06  F 2.8 – 4.5

  • – 4.50 – Half angle of view: 32.15
  • – 3.5 – Image height: 18.36
  • – 21.61 – Total length: 406.68
  • – 406.68 – Back focus: 22.42 – 22.42

2.RF 25-300 mm F 3.5-5.6

  • – Focal distance: 25.20-294.41
  • – F value: 3.50
  • – 5.60 – Half angle of view: 36.72
  • – 4.20 – Image height: 18.80
  • – 21.61 – Total length: 374.08
  • – 374.08 – Back focus: 21.75 – 21.75

As you can see the details of the two above lenses having shorter Back Focus distance. One lens is focal length of 25-300mm with aperture ange F6.5-F5.6 and other lens we have in the list is the 30mm to 350mm with aperture range F2.8-F4.5. Literally with bit extra wide coverage the 25-300mm Lens is commercially more usable than the 30-350mm lens.

Not only the above two lenses we also have two DSLRs lenses those who give extreme coverage, you can  say these lenes are being inspired from Canon EOS Cinema (PL Mount) lenses.As usually PL Mount lenses give extreme coverage but they are costly too.

Canon Fullframe DSLRs Lens Patent

1. Canon EF 35-350 mm F 3.5-5.6

  • – Focal length: 35.04-350.37
  • – F value: 3.50
  • – 5.60 – Half angle of view: 30.36
  • – 3.5 – Image height: 20.53
  • – 21.61 – Total length: 321.17
  • – 321.17 – Back focus: 40.10 – 40.10

2. Canon EF 35-400mm F 4.5-5.6

  • – Focal distance: 35.13 – 386.45 – F value: 4.50
  • – 5.60 – Half angle of view: 30.30
  • – 3.20 – Image height: 20.53
  • – 21.61 – Total length: 362.82
  • – 362.82 – Back focus: 54.68 – 54.68

But as you can see the Focal length of both the lenses are exactly same at wider end starting from 35mm bit at tele end one is having 350mm coverage and other having 400mm coverage. The Lens made of Canon Fullframe DSLRs having 35-350mm focal length and aperture range F3.5-5.6 look bit more usable to me compared to 35-400mm lens with F4.5-5.6 aperture.

By looking at these patent data one thing is sure that Canon  really planned something great for thir mirroless fullframe camera as well as Fullframe DSLRs. Which lens is your fav lens among the list of four lenses do share with us.

Canon Patent – DSLRs with In-Body Image Stabilization

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Canon Working on Ultra Fast Wide-angle Prime Lenses for FF Mirrorless Camera

Latest patents revels that Canon is working on multiple ultra-fast prime lenses for Canon RF Mount camera. The Patent document carries test results of three different lenses includes

Canon Latest Patents of Ultra Fast Prime Lenses

  • Canon RF 14-21mm f/1.4L
  • RF 16-35mm f/2.8L and
  • RF 12-20mm f/2L

It’s really great to see Canon is working on ultra fast prime lenses for the RF mount to make it more complete and usable to pros. We also hope new generations of EOS R series camera also on their way to surprise us next year.

Take a look at  the details of the patent below

 

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Canon Working on Advance Built-in Flash Units for DSLRs

Canon Working on Advance Built-in Flash Units, you can see the patent images below the flash is now more flexible and can be used as a bounce flash without adding any extra accessories.

Take a look at one more image of the patent document so you have the clear idea of the new built-in flash unit

 

Patent Details

The image-capturing apparatus includes a light-emitting unit movable between a retracted position and a light-emitting position at which a light emitter faces a direction different from an image-capturing direction toward an object, and a moving mechanism to rotate the light-emitting unit about a rotation center axis not parallel to the image-capturing direction to move the light-emitting unit between the retracted and light-emitting positions. The moving mechanism is configured such that, at the retracted position, the light emitter is located on an object side further than the rotation center axis located at a first position, and such that, at the light-emitting position, the rotation center axis is located at a second position located on the object side further than the first position. The moving mechanism includes a stopper portion provided to stop the rotation center axis at the second position.

An image-capturing apparatus comprising:
a main body;
a light-emitting unit including a light emitter and being movable relative to the main body between a retracted position and a light-emitting position at which the light emitter faces a direction different from an image-capturing direction toward an object; and
a moving mechanism configured to rotate the light-emitting unit about a rotation center axis not parallel to the image-capturing direction to move the light-emitting unit between the retracted position and the light-emitting position.

See more – Canon Patents | Also see – Canon Patent – DPAF Sensor with Increased Dynamic Range

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Canon Patent - DPAF Sensor with Increased Dynamic Range

Canon latest patent suggest that Canon is working on a new Version dual pixel CMOS autofocus sensor, that particular sensor is capable to do multishot in a single click with the help to sub-pixels. With the help of the subpixel multi-shot technology the Canon dual pixel CMOS autofocus sensors will going to create images with high dynamic range compared to the conventional image that you get from a Canon DSLR camera / Mirrorless Camera.

As we all know Canon dual pixel CMOS autofocus sensor uses their to sub pixels to acquire auto focus on subject, now in this case that to sub pixels or may be in quad pixel sensor a pair of pixels will capture two different images at the same moment with different exposure values. And later on both of the image will going to be combined with each other to have a image with enhanced dynamic range.

As you can see from the flowchart, Canon algorithms are arranged in a way to acquire different images with multiple exposures and then perform the first dynamic range extension process and after that transform II dynamic range extension process and finally the images saved in the memory card.

So any future Canon will going to give a option to users to have images with enhanced dynamic range. There is also possibility that can and may seamlessly integrate this feature in their dslrs, because in many test we have seen that Canon dslrs get low scores when compared to the cameras from Nikon or Sony.

In general a patent takes approx 1 or 2 years of time to become a official product, and it is also not necessary that every parent should become a product. SO, at this moment we are unable to confirm you that this particular Technology will going to be used in a future inside Canon DSLR or upcoming Canon mirrorless camera. But we do have a high hope as this one is most important feature that should put inside the Canon DSLR and upcoming cameras.

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Canon Cinema Camera Patent

Canon Cinema Camera patent surfaced over the web, The patent shows a XC10 style camera with integrated interchangeable lens Mount. We have received  rumors in past that Canon is working on EOS Cinema camera, which was rumored to arrive sometime near Photokina 2018. As we all know Canon is putting more attention towards Mirrorless announcement this year, we may see some sort of delay in announcement of EOS Cinema camera.

More Pics from the patent

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