Canon Patent: TS-E Macro Lens (might be the TS-E 90mm F2.8L Macro)

Canon Patent

A new Canon patent was spotted by asobinet.com. It’s for a tilt-shift lens and it might apply to an already released Canon lens.

Canon patent application 2021-167982 (Japan) discusses optical formulas for a tilt shift macro lens. The patent literature hints at an already released lens, the Canon TS-E 90mm f/2.8L Macro. From the patent literature:

PROBLEM TO BE SOLVED: To obtain an imaging optical system which has less aberration fluctuation during focusing from infinity to a short distance, has high optical performance over the entire focus range, and can easily secure a sufficient amount of peripheral light.

In recent years, an imaging optical system used in an imaging device such as an interchangeable lens still camera has a large aperture ratio, little aberration fluctuation during focusing from infinity to a short distance, and has high optical performance over the entire focus range. Is required.

The double-Gauss type imaging optical system is characterized in that it is easy to make a large-diameter ratio and the aberration fluctuation with respect to the fluctuation of the object distance is relatively small. However, in a double Gauss type imaging optical system, if the entire system is moved during focusing from infinity to a short distance, the amount of movement of the pupil increases. As a result, when trying to secure the peripheral illumination over the entire focus range, the effective diameter of the lens increases and the entire system becomes large.

In order to have a large aperture ratio, high optical performance when focusing from infinity to a short distance, and to obtain a sufficient amount of peripheral light, it is important to appropriately set the lens configuration, the material used for each lens, and the like. Will become.

Thepresent invention is an imaging optical system having little aberration fluctuation due to focusing from infinity to a short distance, having high optical performance over the entire focus range, and easily securing a sufficient amount of peripheral light, and an imaging apparatus having the same. The purpose is to provide.

  • Focal length: 90.00
  • F value: 2.91
  • Image height: 34.00
  • Overall length: 132.06
  • Shooting magnification: 0.5

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

Canon RF 100mm f/2.8L Macro IS – Better Than The EF Mount Version?

RF 100mm F/2.8L Macro Review

The Canon RF 100mm f/2.8L Macro IS gets some attention. It’s relatively affordable and has a rather good performance. Is it worth upgrading from the Canon EF 100mm f/2.8L Macro IS?

At a glance:

  • RF-Mount Lens/Full-Frame Format
  • 1.4x Magnification with Autofocus
  • Aperture Range: f/2.8 to f/32
  • Minimum Focusing Distance: 10.2″
  • Super Spectra Coating
  • Smooth and Quiet Auto Focus
  • Optical Image Stabilization; Hybrid IS
  • Control Ring for Direct Setting Changes
  • 9-Blade Diaphragm
  • Weather-Sealed Construction

If the upgrade is worth your money is what wedding photographer Katelyn James wanted to find out.

As a wedding photographer, a macro lens is a must have. I don’t use it very often but I use it at every single wedding for rings, earrings and other small details. I’ve never had an issue with my EF 100mm but when Canon announced the RF version I knew I had to give it a shot! So this video shares my thoughts and opinions on this new RF lens from Canon!

And here are her thoughts about the Canon RF 100mm f/2.8L Macro IS.

More coverage of this outstanding lens is listed here.

Preorders in USA are open at $1,399: B&H Photo | Adorama. If you are based in UK we recommend Park Cameras. More worldwide preorders:

America: B&H Photo, Adorama, Amazon USA, Amazon CA, KEH Camera, Canon CA, Canon USA
Europe & UK: Amazon DE, Amazon UK, Wex Photo Video, Park Cameras, Canon DE, Canon UK

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Canon Patent: RF 180mm f/3.5 Macro And RF 200mm f/4 Macro

Canon Patent

And here is a new Canon patent application and as most of them are, this one too is for RF-mount lenses.

asobinet.com spotted Canon patent application 2021-152568 (Japan). The patent application discusses optical formulas for both RF 180mm f/3.5 Macro and RF 200mm f/4 Macro lenses. The former lens might replace the EF 180mm F3.5L Macro USM, a lens that has already been discontinued.

PROBLEM TO BE SOLVED: To provide an optical system which is suitable for a macro lens and can suppress aberration fluctuation.

The optical system of each embodiment has an aperture aperture SP2 as a main focus aperture that determines (limits) the light beam of the open F number (Fno), and a positive refractive power arranged on the object side of the aperture aperture SP2. It has a front focus group LPF, a rear focus group LPR having a positive refractive power arranged on the image side of the aperture aperture SP2, and a negative refractive power arranged on the image side of the rear focus group LPR. It has a posterior group LN. The “group” as used herein means each group of lenses whose spacing changes during focusing.

Embodiment 1:

  • Focal length 171.00
  • F number 3.50
  • Half angle of view (°) 7.21
  • Image height 21.64
  • Overall length of optical system 194.49
  • BF 47.67
  • Magnification ∞ β = -1

Embodiment 2:

  • Focal length 174.43
  • F number 3.50
  • Half angle of view (°) 7.07
  • Image height 21.64
  • Overall length of optical system 189.49
  • BF 13.73
  • Magnification ∞ β = -1

Embodiment 3:

  • Focal length 140.00
  • F number 3.50
  • Half angle of view (°) 8.78
  • Image height 21.64
  • Overall length of optical system 177.49
  • BF 35.17
  • Magnification ∞ β = -1

Embodiment 4:

  • Focal length 194.00
  • F number 4.00
  • Half angle of view (°) 6.36
  • Image height 21.64
  • Overall length of optical system 202.49
  • BF 39.36
  • Magnification ∞ β = -1

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

Canon RF 100mm f/2.8L MACRO IS Review

RF 100mm F/2.8L Macro Review

Here is a review of one of the more interesting RF-mount lenses Canon released, the Canon RF 100mm f/2.8L MACRO IS.

At a glance:

  • RF-Mount Lens/Full-Frame Format
  • 1.4x Magnification with Autofocus
  • Aperture Range: f/2.8 to f/32
  • Minimum Focusing Distance: 10.2″
  • Super Spectra Coating
  • Smooth and Quiet Auto Focus
  • Optical Image Stabilization; Hybrid IS
  • Control Ring for Direct Setting Changes
  • 9-Blade Diaphragm
  • Weather-Sealed Construction

The video-review, courtesy of asobinet.com, is not spoken nor commented but rather self-explaining with short texts. Lots of tests and test charts.

More coverage of this outstanding lens is listed here.

Preorders in USA are open at $1,399: B&H Photo | Adorama. If you are based in UK we recommend Park Cameras. More worldwide preorders:

America: B&H Photo, Adorama, Amazon USA, Amazon CA, KEH Camera, Canon CA, Canon USA
Europe & UK: Amazon DE, Amazon UK, Wex Photo Video, Park Cameras, Canon DE, Canon UK

.

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Canon RF 100mm f/2.8L IS MACRO Real Life Review

RF 100mm F/2.8L Macro Review

Here is another Canon RF 100mm f/2.8L IS MACRO review. This lens is getting a lot of well deserved attention.

At a glance:

  • RF-Mount Lens/Full-Frame Format
  • 1.4x Magnification with Autofocus
  • Aperture Range: f/2.8 to f/32
  • Minimum Focusing Distance: 10.2″
  • Super Spectra Coating
  • Smooth and Quiet Auto Focus
  • Optical Image Stabilization; Hybrid IS
  • Control Ring for Direct Setting Changes
  • 9-Blade Diaphragm
  • Weather-Sealed Construction

This time the Canon RF 100mm f/2.8L IS MACRO review comes from Irene Rudnyk. It’s a rela life review not a lab-setting rebiew. The RF 100mm Macro lens is not just for macro photography. The lens is well regarded also among portrait and wedding photographers.

More coverage of this outstanding lens is listed here. Preorders in USA are open at $1,399: B&H Photo | Adorama. If you are based in UK we recommend Park Cameras. More worldwide preorders:

America: B&H Photo, Adorama, Amazon USA, Amazon CA, KEH Camera, Canon CA, Canon USA
Europe & UK: Amazon DE, Amazon UK, Wex Photo Video, Park Cameras, Canon DE, Canon UK

[via Fstoppers]

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Canon RF 100mm f/2.8L Macro IS Review – How Does It Hold Up?

Canon RF 100mm F/2.8L

A review of the Canon RF 100mm f/2.8L Macro IS lens. The Canon RF 100mm f/2.8L Macro IS was announced one month ago. It’s scheduled to ship in July 2021.

At a glance:

  • RF-Mount Lens/Full-Frame Format
  • 1.4x Magnification with Autofocus
  • Aperture Range: f/2.8 to f/32
  • Minimum Focusing Distance: 10.2″
  • Super Spectra Coating
  • Smooth and Quiet Auto Focus
  • Optical Image Stabilization; Hybrid IS
  • Control Ring for Direct Setting Changes
  • 9-Blade Diaphragm
  • Weather-Sealed Construction

TheCameraStoreTV posted their hands-on review of a pre-production version of the RF 100mm f/2.8L Macro.

Hands-on preview of a pre-production Canon RF 100mm f2.8L Macro IS USM. This lens is designed for close-up photography providing 1.4x magnification with autofocus. Watch to find out how this lens stacks up on Canon EOS Full-Frame Mirrorless Cameras.

Preorders in USA are open at $1,399: B&H Photo | Adorama. If you are based in UK we recommend Park Cameras. More worldwide preorders:

America: B&H Photo, Adorama, Amazon USA, Amazon CA, KEH Camera, Canon CA, Canon USA
Europe & UK: Amazon DE, Amazon UK, Wex Photo Video, Park Cameras, Canon DE, Canon UK

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