Canon Patent: RF 70-200mm F2-2.8 DS, RF 70-135mm F2.5 DS, More Lenses

Canon Patent
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A new Canon patent application for RF mount lenses with “Defocus Smoothing” (DS) optical technology. More about Defocus Smoothing is listed here.

Canon patent application 2023170260 (Japan, published 12/1/2023) discusses optical formulas for a bunch of RF mount lenses:

  • 70-200mm F2-2.8
  • 70-135mm F2.5
  • 28-70mm F1.6-2
  • 80-150mm F1.8

All, apparently, have DS on board. From the patent literature:

  • An object of the present invention is to provide a variable power optical system that obtains a uniform and good apodization effect over the entire zoom range and suppresses peripheral dimming.
  • Background Art
    Conventionally, in order to obtain an appropriately blurred image, an optical system equipped with a filter having a transmittance distribution, such as an apodization filter whose transmittance changes as the distance from the optical axis increases, has been known. There is. Patent Document 1 discloses an optical system in which apodization filters are arranged before and after the aperture of a single focus lens.
  • However, since the optical system disclosed in Patent Document 1 is a single focus optical system, it is insufficient as a method for obtaining a sufficient apodization effect in each zoom state of a variable power optical system. Further, in a variable magnification optical system, it is required to suppress peripheral dimming and to obtain a good apodization effect during variable magnification.
  • Accordingly, an object of the present invention is to provide a variable power optical system that obtains a good apodization effect over the entire zoom range and suppresses peripheral dimming.

Example 1

  • Focal length: 71.79-193.181
  • F value: 2.00-2.85
  • Half angle of view: 16.77-6.39
  • Image height: 21.64
  • Total length: 161.48-219.93
  • Back focus: 15.67-31.62

Example 2

  • Focal length: 28.91-68.11
  • F value: 1.60-2.06
  • Half angle of view: 36.81-17.62
  • Image height: 21.64
  • Total length: 157.90-179.46
  • Back focus: 19.11-33.77

Example 3

  • Focal length: 35.02-68.11
  • F value: 1.80-2.06
  • Half angle of view: 31.71-17.62
  • Image height: 21.64
  • Total length: 162.01-179.46
  • Back focus: 22.26-33.77

Example 4

  • Focal length: 78.18-145.50
  • F value: 1.87
  • Half angle of view: 15.47-8.46
  • Image height: 21.64
  • Total length: 300.20-300.18
  • Back focus: 70.00

Example 5

  • Focal length: 72.00-135.00
  • F value: 2.50
  • Half angle of view: 16.72-9.10
  • Image height: 21.64
  • Total length: 250.00
  • Back focus: 40.00

More Canon patents are listed here.

[via asobinet]

Canon Says It Will Take 6 Months To Deliver The RF 100-300mm F2.8L IS Lens

Rf 100-300mm
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Here is the usual Canon disclaimer, always showing up after a product announcement. It will take no less than six month to ship the RF 100-300mm F2.8L IS USM lens. so, for now you can spend your $9.500 somewhere else.

Canon advisory:

Currently, we have received more orders than expected for the following products, and due to the impact of global parts supply, we are experiencing delivery delays. We apologize for the inconvenience caused to our customers and business partners.
Products are scheduled to be shipped one after another, but we anticipate that it will take a long time for the new products RF100-300mm F2.8 L IS USM and Speedlight EL-1.
We would like to once again apologize for keeping our customers waiting for a long time. We will continue to take measures to ensure a stable supply of products so that we can deliver them as soon as possible. Thank you kindly look forward for your understanding.

Product nameAbout supply
RF100-300mm F2.8 L IS USMWe are planning to ship the products one after another, but it is expected that it will take a considerable amount of time for delivery.
When placing a new order, it may take approximately six months for delivery.
RF10-20mm F4 L IS STMRF24-105mm F2.8 L IS USM ZRF200-800mm F6.3-9 IS USMWe plan to ship the items in sequence, but delivery may take longer than usual.
Speedlight EL-1We are planning to ship the products one after another, but it is expected that it will take a considerable amount of time for delivery.
Even for customers who have already placed an order, there is a possibility that the product will not be delivered until spring 2024.
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Cyber Week Deals At B&H Photo, Canon USA, Adorama, And Others

Cyber Week
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There are still some decent Cyber Week deals to grab out there.

B&H Photo has the Datacolor SpyderX Mobile Pro Kit calibration tool on offer at $124.99 (reg. $249.99). Then they have Lexar 128GB Professional 2000x UHS-II SDXC Memory Card (2-Pack) on sale at $170 (reg. $329.99, $160 discount when added to cart). Also interesting are the Lensbaby Pro Kit for Canon EF and RF on sale at $699.95 (reg. $1399.95). To see all of B&H Photo’s Cyber Week deals click here.

More selected deals:

A Few Days After The Quad Pixel AF Patent, The Same Surfaces As A Rumor

Nab 2023 Canon Eos R5 Mark Ii Canon Eos R8 CP+ 2024 Mark Ii Canon EOS Rf 24-50mm R6 Mark Ii Rf Mount Eos R6 Mark Ii Rf 300mm Rf 35mm Canon Eos R100 Rf 24mm F/1.8 Rf-s Canon Eos R7 Eos R100 Canon High Resolution Eos R R10 Eos C5 Canon Canon Eos R1 Eos R5c Canon Rf 16mm Rf 35mm F/1.2L EF Lenses Tilt-shift Lenses Rumor
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Still having doubts about how shitty the rumor industry is?

A few days ago, a Canon patent for Quad Pixel Autofocus was spotted. Today, it became a rumor.

After the patent, now there is “a strong likelihood of Quad Pixel Autofocus being featured in the EOS R5 Mark II“, although “confirmation on this aspect is not as concrete at the moment“. Of course it is not.

If you want to see for yourself what and how much bs has been spilled so far about the EOS R5 Mark II, have a look here. Believe me, no one knows anything and before the few, reliable Japanese sites post something, no one will know anything. They are just pretending.

Forget rumor bs, use your brain and your camera for photography.

[via asobinet]

Black Friday Canon Gear Discounts At B&H Photo, Adorama, Canon, And More

Black Friday
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And here it is, this stupid and f*****g Black Friday craziness.

Be careful and watch closely if a deal is a deal. If you want to check the price some stuff had before Black Friday, you might use the Wayback Machine. Common sense and keeping it cool will also do you a lot of good.

That said, there are indeed some good deals to spot in these days, just look carefully and don’t act to quickly (that’s what they want you to do, buying without thinking). Here are some manually checked links:

More selected deals:

Have fun, and remember to keep it cool.

Canon Patent: Quad Pixel Phase Detection Auto-Focus

Canon Patent
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Here is a new and definitely interesting Canon patent application: Quad Pixel Phase Detection AF. It’s not the first patent for this technology.

Canon patent application 2023166867 (Japan, published 11/22/2023) discusses methods and technology for Canon’s next generation autofocus technology, Quad Pixel Detection AF.

From the patent literature:

  • [Problem] To improve the performance of focus detection in focus detection using an image plane phase difference method that uses signals output from image sensors having different vertical and horizontal lengths.
  • TECHNICAL FIELD
    The present invention relates to an image sensor in which a pixel section having a plurality of photoelectric conversion sections is two-dimensionally arranged, and an image sensor equipped with the image sensor.
  • BACKGROUND ART
    Conventionally, as one of the focus detection methods performed in an imaging device, a pair of pupil division signals are acquired using focus detection pixels formed on an image sensor, and a focus detection method using a phase difference method is used. A so-called imaging plane phase difference method for performing detection is known.
  • As an example of such an imaging surface phase difference method, there is an imaging device using a two-dimensional imaging element in which one microlens and a plurality of divided photoelectric conversion sections are formed for one pixel. It is disclosed in Patent Document 1. The plurality of photoelectric conversion units are configured to receive light transmitted through different regions of the exit pupil of the imaging lens via one microlens, and perform pupil division. Then, by calculating the amount of image shift from the phase difference signal that is a signal of each photoelectric conversion unit, focus detection using a phase difference method can be performed. Further, by adding up the signals of the individual photoelectric conversion units for each pixel, a normal image signal can be obtained. Further, Patent Document 1 discloses a configuration in which the saturation resistance of the pixel is increased by arranging a plurality of types of pixels having different heights of separation barriers between photoelectric conversion parts in the pixel.
  • In such an image sensor, in a configuration in which a plurality of photoelectric conversion units are arranged horizontally within a pixel and the pupil division direction is horizontal, for example, when the subject has a horizontal striped pattern, parallax is This may be difficult to see, and focus detection accuracy may deteriorate.
  • On the other hand, Patent Document 2 discloses a technique for improving focus detection accuracy by providing two types of arrangement directions of photoelectric conversion units for each microlens and two types of pupil division directions. There is. Furthermore, Patent Document 2 discloses a structure that separates vertically adjacent photoelectric conversion units and a structure that separates horizontally adjacent photoelectric conversion units, and has a structure that allows electric charges to leak to adjacent photoelectric conversion units. It is disclosed that the With this structure, supersaturated charges received in excess of the amount of charge that can be accumulated by one photoelectric conversion section leak and accumulate in different photoelectric conversion sections arranged in a predetermined direction. Even in the case of saturation, horizontal or vertical phase difference focus detection is possible.
  • Most conventional image sensors do not have an aspect ratio of 1:1. Therefore, when focus detection pixels using the image plane phase difference method in the vertical direction and focus detection pixels in the horizontal direction are arranged on the image sensor, focus detection using the image plane phase difference method is difficult, especially in the periphery of the image sensor. Performance is biased towards either the vertical or horizontal direction.
  • The image sensor described in Patent Document 1 changes the separation state of the photoelectric conversion unit depending on the saturation state of the pixel. Therefore, depending on the aspect ratio of the image sensor, the state of charge crosstalk (a phenomenon in which charge leaks to the adjacent photoelectric conversion unit) between the photoelectric conversion units in the vertical focus detection pixels and the horizontal focus detection pixels respectively occurs. It is not possible to control the above problems and cannot solve the above problems.
  • Furthermore, the image sensor of Patent Document 2 does not have a configuration that controls charge crosstalk when the photoelectric conversion section is not saturated, and also controls charge crosstalk between the photoelectric conversion sections according to the aspect ratio of the image sensor. Since there is no mention of the talk rate, the above problem cannot be solved.
  • The present invention has been made in view of the above problems, and is intended to improve the performance of focus detection in focus detection using an image plane phase difference method that utilizes signals output from image sensors having different lengths and widths. The purpose is to

More Canon patent applications are listed here.

[via asobinet]