Nikon Z 8 Teardown And Disassembly (not easy to do, it seems)

Nikon Z 8
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Here is neat teardown and disassembly of the popular Nikon Z 8 mirrorless camera.

Nikon Z 8 at a glance:

  • 45.7MP FX-Format Stacked CMOS Sensor
  • Lightweight Design, 30% Smaller than Z9
  • 8.3K 60p N-RAW, 4.1K 60p ProRes RAW
  • 8K30p and 4K120p Video, 10-Bit Internal
  • Up to 20 fps Raw, 30 fps JPEG Shooting
  • 493-Point AF, AI-Based Subject Detection
  • Blackout-Free Real Live Viewfinder
  • 3.2″ 4-Axis Tilting Touchscreen LCD
  • CFx Type B & SD Memory Card Slots
  • 5 GHz Wi-Fi and Bluetooth

Kolari Vision disassembled the Nikon Z 8 and they found it’s not easy to disassemble and put together again. The folks at Kolari Vision says:

We consider the Nikon Z8 a mid-difficulty camera to teardown. According to our camera tech, there were so many screws to keep track of.

Nikon Z 8:

America: B&H Photo, Adorama, Amazon USA, Amazon Canada, Canon Canada, Canon USA
Europe & UK: Amazon DE, Amazon UK, Amazon IT, Canon IT, WEX Photographic, Canon FR, Canon UK, Canon DE

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Canon Patent: RF 100-300mm f/2.8L IS USM Lens

Canon Patent
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A new Canon patent application was spotted.

Canon patent application 2023099388 (Japan, published 7/13/2023) discusses optical formulas for what appears to be an RF 100-300mm f/2.8L IS USM lens for the EOS R camera system. From the patent literature:

Title of Invention

A zoom lens, an imaging device having the same, and an imaging system.

An object of the present invention is to provide a lightweight zoom lens that has high optical performance over the entire zoom range, and an imaging device and an imaging system having the zoom lens.

Description of the Related Art

In recent years, zoom lenses used in imaging apparatuses are required to have high optical performance over the entire zoom range and to be lightweight. In order to meet these requirements, the zoom lens has a first lens group with positive refractive power, a second lens group with negative refractive power, and a subsequent group including a plurality of lens groups, arranged in order from the object side to the image side. Lenses have been proposed (see Patent Documents 1 and 2).

A large-aperture telephoto zoom lens having a long focal length and a small F-number tends to have a large lens diameter, which tends to cause an increase in weight. In order to reduce the weight of the zoom lens, it is effective to increase the positive refractive power of the first lens group and reduce the lens diameters of the lens groups included in the subsequent group. However, if the refractive power of the first lens group is made too strong, it becomes difficult to correct spherical aberration, axial chromatic aberration, and lateral chromatic aberration, especially at the telephoto end.

SUMMARY OF THE INVENTION

It is an object of the present invention to provide a lightweight zoom lens that has high optical performance over the entire zoom range, and an imaging apparatus and imaging system having the zoom lens. Focusing is performed by moving the fifth lens unit L5 and the sixth lens unit L6 along different trajectories . Specifically, the fifth lens unit L5 and the sixth lens unit L6 move toward the image side when focusing from an infinite object to a close object.

Example 1

  • Focal length: 103.00-292.00
  • F-value: 2.90
  • Half angle of view: 11.86-4.24
  • Image height: 21.64
  • Total length: 333.61
  • Back focus: 31.93

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

[via asobinet]

Canon EOS R5 Mark II To Get 60MP?

Nab 2023 Canon Eos R5 Mark Ii Canon Eos R8 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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A new rumor about the Canon EOS R5 Mark II from what appears to be a new, recently surfaced rumor outlet. We never heard from these guys and do not know who they are. That’s to say that you should apply the proverbial truckload of salt. Most rumors are nothing but speculations or educated guesses.

Latest has it that the Canon EOS R5 Mark II might feature a 60MP imaging sensor. The current model, the EOS R5, already sports a 45MP sensor. The bump to 60MP wouldn’t be that unrealistic. Quoting the source:

Through some industry people, we have found out that it is very likely that the EOS R5 Mark II will get a resolution bump to 60mp, which seems to be a resolution embraced by other brands already. Reports suggest that the camera is already in the hands of the usual early testers as Canon works to refine the camera.

The same sources said that the R52 will also have the capability of shooting 8K/60P. We do not know if the increased framerate for 8K/60P will be internal RAW. External recording capabilities are not yet known.

But, hey!, what about the all-destroying overheating? Not surprisingly, “Canon has developed better cooling for the successor [the EOS R5]”. Of course they did.

The announcement date is now rumored to be around the first half of 2024. All Canon EOS R5 Mark II rumors are listed here.

Forget rumors, enjoy life and snap pictures.

[via Camera Insider]

Canon Patent: RF 9-18mm f/4 And RF 10-18mm f/4 Lenses

Canon Patent
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Another Canon patent application that was published yesterday.

Canon patent application 2023099389 (Japan, published 7/13/2023) discusses optical formulas and methods for two ultra wide zoom lenses.

From the patent literature:

A compact and lightweight zoom lens that has a wide angle of view and high optical performance over the entire zoom range is provided.

Description of the Related Art

In recent years, zoom lenses used in imaging apparatuses are required to have a wide angle of view and high optical performance as imaging apparatuses have become more sophisticated. Further, as a zoom lens having a wide angle of view at the wide-angle end, a negative lead type zoom lens in which a lens group having a negative refractive power precedes the zoom lens is known.
However, in the zoom lens disclosed in Patent Document 1, the focal length of the first lens group is set to be small in order to widen the angle of view. . In addition, the back focus and the refractive power of the first lens group are not appropriate, and it is difficult to further reduce the diameter of the front lens and shorten the total length. The zoom lens disclosed in Patent Document 2 has a short back focus and a refractive power arrangement suitable for shortening the total length. However, the lens groups succeeding the first lens group all have positive refractive power, and it is difficult to narrow the position of the front principal point toward the first lens group when viewed as the entire succeeding group. is difficult.
In order to obtain a compact and lightweight zoom lens that has high optical performance over the entire zoom range while achieving a wide angle, the refractive power and lens configuration of the first lens group, and the lens groups following the first lens group It is important to set the refracting power and placement position of the lens appropriately.

SUMMARY OF THE INVENTION

It is an object of the present invention to provide a compact and lightweight zoom lens that has a wide angle of view and high optical performance over the entire zoom range, and an imaging apparatus having the zoom lens.

Example 1

  • Focal length: 9.27-17.46
  • F-value: 4.12
  • Half angle of view: 63.98-51.10
  • Image height: 19.00-21.64
  • Overall length: 108.47-100.80
  • Back focus: 15.71-23.00

Example 2

  • Focal length: 10.01-17.46
  • F-value: 4.12
  • Half angle of view: 62.21-51.10
  • Image height: 19.00-21.64
  • Overall length: 106.74-99.55
  • Back focus: 12.36

More Canon patents are listed here.

[via asobinet]

Canon Patent: RF 200mm f/2 IS Lens For EOS R System

Canon Patent
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And here we have another Canon patent published today.

Canon patent application 2023099385 (Japan, published 7/13/2023) discusses optical formulas for a RF 200mm f/2 IS lens.

From the patent literature:

To provide an optical system having a plurality of focusing groups and anti-vibration groups that can be made compact and lightweight in addition to excellent optical performance.

Description of the Related Art

In a telephoto lens equipped with a plurality of focusing groups that move during focusing from infinity to the closest object and a vibration reduction group for correcting image blur, in addition to good optical performance, There is a demand for miniaturization and weight reduction of the entire lens system.
The present invention provides an optical system having a plurality of focusing groups and anti-vibration groups, which can be reduced in size and weight in addition to excellent optical performance.

Example 1

  • Focal length: 195.00
  • F-value: 2.05
  • Half angle of view: 6.33
  • Image height: 21.64
  • Overall length: 184.49
  • Back focus: 22.35

More Canon patents are listed here.

[via asobinet]

Canon Patent: RF 20-60mm f/4.5-6.3 Lens For EOS R System

Canon Patent
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And here we have another Canon patent application published today.

Canon patent application 2023099391 (Japan, published 7/13/2023) discusses optical formulas and methods for an RF 20-60mm f/4.5-6.3 lens for the EOS R system. Is this a possible new kit lens?

From the patent literature:

A zoom lens and an imaging device having the same

A compact, lightweight zoom lens with high optical performance and an imaging device and an imaging system having the zoom lens are provided.

Description of the Related Art

A zoom lens used in an imaging apparatus is required to have a wide angle of view, a small size, and a light weight. As a wide-angle zoom lens, a so-called negative lead type zoom lens is known, in which a lens group having a negative refractive power is arranged closest to the object side.
However, in the zoom lens disclosed in Patent Document 1, although the size and weight of the zoom lens have been reduced, various aberrations have not been satisfactorily corrected, resulting in insufficient optical performance. [0007]The present invention provides a zoom lens that is compact and lightweight and has high optical performance, and an imaging apparatus and an imaging system having the zoom lens.

Example 1

  • Focal Length: 24.71-48.53
  • F-value: 4.63-6.48
  • Half angle of view: 36.23-2308
  • Image height: 18.10-20.68
  • Overall length: 105.60-99.03
  • Back focus: 16.94-37.19

Example 2

  • Focal Length: 20.91-48.50
  • F-value: 4.63-6.49
  • Half angle of view: 41.17-23.03
  • Image height: 18.02-20.61
  • Total length: 120.00-100.66
  • Back focus: 10.49-31.34

Example 3

  • Focal Length: 20.61-58.50
  • F-value: 4.64-6.49
  • Half angle of view: 41.17-19.41
  • Image height: 18.02-20.61
  • Overall length: 135.00-125.50
  • Back focus: 10.49-11.70

More Canon patents are listed here.

[via asobinet]