TTArtisan AF 35mm f/1.8 Announced


TTArtisan just announced the TTArtisan AF 35mm f/1.8  in Asia. We should get it here soon in the States most likely on Amazon first followed by B&H Photo.

Only 850! Mingjiang Optics officially released the new AF 35mm F1.8 autofocus lens. This is Mingjiang Optics’ third AF autofocus lens after the 32mm f/2.8 and 27mm f/2.8 lenses. It is approximately equivalent to a full-frame 52.5mm viewing angle. , with 3 mount versions including Sony E, Fuji X, and Nikon Z (the first Sony E and Fuji 0.6m, the lens is made of metal and weighs about 199 grams. It is light and compact, suitable for daily hang-up. It comes standard with a metal lens hood. It only sells for 890, and is priced at 850 for the first time

TTArtisan AF 35mm F1.8

  • Format: APS-C
  • Mount: E/X/Z
  • Focal length: 35mm
  • Aperture value: F1.8-F16
  • Aperture blades: 9 pieces
  • Lens configuration: 10 elements in 8 groups
  • Shortest shooting distance: 0.6m
  • Maximum imaging magnification: unknown
  • Filter diameter: 52m
  • Size: φ65×60mm
  • Weight: 199-210g
  • Dustproof and splashproof:-
  • AF: STM
  • Image stabilization:-
  • Other features:
    ・USB-C port
  • Pre-sale price: 850 yuan
  • Regular price: 890 yuan
  • Released on October 6th

via Fujiaddict, asobinet, Weibo, Weibo

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Development announcement of SIGMA 70-200mm F2.8 DG DN OS|Sports


Sigma 70-200mm f/2.8 DG DN OS Sports Coming Dec
B&H Photo / Amazon / Adorama

The SIGMA Corporation is pleased to announce the development of the SIGMA 70-200mm F2.8 DG DN OS | Sports.

The SIGMA 70-200mm F2.8 DG DN OS | Sports is a large-aperture zoom lens for full-frame mirrorless cameras. In addition to the expressive imaging capabilities owing to the latest optical design, the lens offers a high level of performance and features that meet the expectations of professionals in both still and video, including high-speed autofocus with HLA (High-response Linear Actuator), optical stabilizer with the latest algorithm “OS2”, and the superior weather resistance of SIGMA’s Sports line.

Combined with the SIGMA 14-24mm F2.8 DG DN | Art and the SIGMA 24-70mm F2.8 DG DN | Art, SIGMA’s three zoom lenses for full-frame mirrorless cameras with a bright F2.8 constant aperture cover a wide range of focal lengths.

Launch: December, 2023

Available mounts: L-Mount, Sony E-mount

*The appearance and specifications of the product are subject to change.

* This product is developed, manufactured and sold based on the specifications of E-mount which was disclosed by Sony Corporation under the license agreement with Sony Corporation.

* L-Mount is a registered trademark of Leica Camera AG

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SIGMA Announces 10-18mm F2.8 DC DN | Contemporary, The World’s Smallest And Lightest F2.8 Zoom Lens For APS-C Mirrorless Cameras


Sigma 10-18mm f/2.8 DC DN Contemporary:
B&H Photo / Amazon / Adorama

Ronkonkoma, NY – October 5, 2023 – SIGMA Corporation of America, the US subsidiary of SIGMA Corporation (CEO: Kazuto Yamaki. Headquarters: Asao-ku, Kawasaki-shi, Kanagawa, Japan) is pleased to announce the SIGMA 10-18mm F2.8 DC DN | Contemporary lens. This is the first SIGMA lens being announced and released concurrently for the L-Mount, Sony E-mount and Fujifilm X Mount. The lens will be available through authorized retail partners on October 26, 2023 for $599.


This is the world’s smallest and lightest F2.8 zoom lens designed for APS-C format mirrorless systems at just 2.8 x 2.4 inches (72.2 x 62mm) and 9.2 ounces (260g)*. The lens covers a 15-36mm (35mm equivalent) focal range, with a fast F2.8 constant aperture. Paired with the 18-50mm F2.8 DC DN | Contemporary, this duo of lenses covers a 15-75mm (35mm equivalent) range with the same bright F2.8 maximum aperture at a combined weight of under 19.5 ounces (550g). Read More »

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Sigma 10-18mm f/2.8 DC DN Contemporary and Sigma 70-200mm f/2.8 DG DN OS Sports Announced



Sigma 10-18mm f/2.8 DC DN Contemporary
B&H Photo / Amazon / Adorama
Sigma 70-200mm f/2.8 DG DN OS Sports Coming Dec
B&H Photo / Amazon / Adorama

Sigma announced the Sigma 10-18mm f/2.8 DC DN Contemporary and the development of the Sigma 70-200mm f/2.8 DG DN OS Sports. The Sigma 10-18mm f/2.8 can already be preordered from B&H Photo and the Sigma 70-200mm f/2.8 will be available in December.

Compact and powerful, the 10-18mm f/2.8 DC DN Contemporary Lens is perfect for travelers, vloggers, and family photographers looking for excellent image quality as well as mobility. With its f/2.8 maximum aperture and 7-blade diaphragm, pleasant bokeh and strong low-light performance is ensured.

  • Sigma’s newly developed push-on petal lens hood is not only conveniently designed but contributes to the lens’s overall compactness
  • Active image stabilizing system reduces camera shake and improves handheld image quality
  • Covers a 15-36mm (full-frame equivalent) focal range
  • 4.6″ minimum focusing distance
  • Maximum magnification ratio of 1:4 at the wide end
  • Mount with dust and splash-resistant structure
  • 7-blade rounded diaphragm for smooth bokeh
  • Compatible with Adobe lens correction profiles for correcting distortion and vignetting

Reviews/Hands-on/etc…

Videos

Sigma Videos

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Sigma 10-18mm f/2.8 DC DN Contemporary Photos and Specs Leaked In Advance The Launch Tomorrow

Sigma 10-18mm f/2.8 DC DN Contemporary Oct. 5th:
B&H Photo / Amazon / Adorama

  • Mounts: L-mount, Sony E, Fujifilm X
  • Lens Construction: 13 elements in 10 groups (3 FLD, 1 SLD and 4 ASPH elements)
  • Viewing Angle: 109.7°-76.5° (APS-C)
  • Aperture blades: 7 rounded
  • Aperture range: f/2.8-22
  • Minimum focusing distance: 11.6 (W) 19.1 (T) cm
  • Maximum magnification ratio: 1:4 (W) 1:6.9 (T)
  • Dimensions (maximum diameter x length): Ø72.2 mm × 62.0 mm
  • Filter diameter: Ø67 mm
  • Weight: 260 g

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via FujiAddict

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Tamron 90mm f/2.8 1:1 Macro and 135mm f/3.5 1:1 Macro Patents Found


Patents for a Tamron 90mm f/2.8 1:1 Macro and 135mm f/3.5 1:1 Macro were found by asobinet. They are translated and reproduced below:

overview

  • [Publication number] P2023134075
  • [Release date] 2023-09-27
  • [Name of the invention] Optical system and imaging device
  • [Application date] 2022-03-14
  • [Applicant]
    [Identification number] 000133227
    [Name] Tamron Co., Ltd.
  • An object of the present invention is to provide an optical system and an imaging device that are small and lightweight and capable of realizing rapid autofocus.
  • BACKGROUND ART
    Conventionally, imaging devices using various solid-state imaging devices, such as video cameras, digital still cameras, single-lens reflex cameras, and mirrorless single-lens cameras, have been widespread. As these imaging devices become more sophisticated and smaller, their imaging lenses (optical systems) are also required to have even higher performance and become smaller, and macro lenses are no exception. A macro lens generally refers to an imaging lens with a maximum imaging magnification of 0.5x to 1x. Macro lenses are particularly required to suppress aberration fluctuations during focusing, such as fluctuations in spherical aberration and field curvature, to achieve high optical performance over the entire focusing range.
  • [0004]
    Patent Document 1 adopts a positive, negative, positive, negative, and positive refractive power arrangement in order from the object side, and focuses by moving a second lens group and a fourth lens group having negative refractive power in the optical axis direction. An optical system has been proposed that does this. In this optical system, the negative refractive power of the second lens group is too strong, and it is necessary to provide a positive refractive power in the fifth lens group, which is the final lens group, in order to correct lateral chromatic aberration. Therefore, it has been difficult to reduce the diameter of the entire optical system, and it has been difficult to reduce the size and weight of the optical system.
  • [0006]
    Accordingly, an object of the present invention is to provide an optical system and an imaging device that are small and lightweight and capable of realizing rapid autofocus.


Example 1 (- The following are macro values)

  • Focal length: 92.7000-41.3760
  • F value: 2.9100-5.8200
  • Half angle of view: 12.6205-9.0852
  • Image height: 21.6330
  • Total length: 125.0000
  • Back focus: 55.4000-38.5640
  • Shooting magnification: 1.0


Example 2

  • Focal length: 87.7998-38.9769
  • F value: 2.9100-5.8200
  • Half angle of view: 13.7621-8.2081
  • Image height: 21.63330
  • Total length: 145.2807
  • Back focus: 22.8285
  • Shooting magnification: 1.0


Example 3

  • Focal length: 135.8005-47.1851
  • F value: 3.5181-7.0000
  • Half angle of view: 8.6054-5.6374
  • Image height: 21.63330
  • Total length: 124.0000
  • Back focus: 62.0716-43.4115
  • Shooting magnification: 1.0

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