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Firmware Update

Sigma Patent - Nano Crystal Coating like Canon and Nikon

Sigma Working on advance lens Anti Reflection coating for lenses. For the lens coating, Sigma will going to use mesoporous silica material similar to “Nano Crystal Coat” of NIKON and “Air Sphere Coating” of CANON.

 

6 layer multilayer coating diagram shared by Sigam patent details

Patent Details of Sigma Anti Reflection Coating

PROBLEM TO BE SOLVED: To provide an antireflection film having low reflectance in a wide wavelength range of visible light to a substrate having various productivity and various refractive indices.

SOLUTION: This antireflection film is formed by laminating in order a first layer, a second layer, a third layer, a fourth layer, a fifth layer and a sixth layer from the side of the substrate in this order, A high refractive index material having an optical film thickness of one layer of 0.045λ or more and 0.971λ or less, the second layer has a low refractive index material with an optical thickness of 0.025λ or more and 0.166λ or less, The third layer has a high refractive index material with an optical thickness of 0.038λ or more and 0.375λ or less and the fourth layer has a low refractive index material with an optical thickness of 0.048λ or more and 0.152λ or less , The optical film thickness of the fifth layer is 0.045λ or more and 0.119λ or less, the optical film thickness of the sixth layer is 0.228λ or more and 0.331λ or less, and the refractive index is And is an ultra-low refractive index material having a refractive index of 1.10 or more and 1.30 or less.

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New Sigma 70-200mm F2.8 Lens Coming

Sigma 70-200mm lens image
According to latest rumors Sigma will soon announce a new 70-200mm lens F2.8 lens. The lens is expected to announce before Photokina 2018. The upcoming version will replace the existing 70-200mm lens. These lenses will initially arrive for Canon, Nikon and Sigma Native mount. We will update you soon as we get any new information.

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Sigma Patent - 18-50mm F2.8 Lens With Optical Image Stabilization

Sigma 18-50mm F2.8 Lens image

On Sep 26, 2006 Sigma announced the 18-50mm F2.8 (Amazon | B&H) lens for APS-C DSLRs.  After that they announce 17-50mm F2.8 lens (B&H | Amazon) on Feb 10, 2010 as a successor of 18-50mm F2.8 lens with IS and improved optics.

Now, a new patent surfaced over the web that shows new version of Sigma 18-50mm F2.8 Lens with IS.

Take a look at the patent details below

SIGMA filed patent of 18-50 mm F2.8 for APS-C sensor with very short back focus.
This patent may be for one of new dp/DPs.

【公開番号】特開2017-211496(P2017-211496A) click here
【公開日】平成29年11月30日(2017.11.30)
【発明の名称】大口径防振付きズームレンズ

Specification and lens arrangement of embodiment 1
Focal length: 17.55 – 48.47 mm
F No.: 2.92
2ω: 81.42 – 32.32
Image height: 13.49 – 14.20 mm
Back focus: 1.0000 – 22.4957 mm
Lens length: 126.29 – 166.99 mm

If a true successor of  18-50mm F2.8 is coming After 10 years of Gap we do expect a lot of improvement in optics, AF speed, IS and overall performance of the upcoming Sigma APS-C lens.

We will update you soon as we get any new information. Also see Sigma new Foveon image sensor patent.

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Sigma 16mm F1.4 DC DN Sample Images

Sigma 16mm F2.8 Lens

Well, yes we do have the samples captured by Sigma 16mm F1.4 DC DN (See development announcement here). The lens is specifically made for E-Mount and M4/3 camera. But, Sample image was captured by Sony A7R II Camera, Actually Sony A7R II camera is used here as a APS-C sensor camera @ 18 MP mode.

Take a look at the sample image and do share your thought with us

Download the full size samples from here

SIGMA 16mm F1.4 DC DN Lens Development Announcement

Sigma Lens

SIGMA announced development of world first 16mm F1.4 DC DN Lens for Sony APS-C Mirrorless cameras as well as M 4//3 mounts. This lens features high grade optics and STM motor for silent and fast AF.

Major Features:

  • Fast Hybrid AF
  • Dust- and splash-proof design
  • Designed to minimize flare and ghosting
  • Image quality rivaling that of our Art line lenses
  • Bright prime functionality to experience photography at its best
  • Accessories Included: Petal Type Lens Hood (LH716-01), Rear and Front Cap
  • “Made in Japan” with outstanding craftsmanship

Continue reading SIGMA 16mm F1.4 DC DN Lens Development Announcement

SIGMA Patent 12mm F1.4 MFT Lens

Sigma filed a patent of 12mm F1.4 for m4/3 lens.It’s a good news for M4/3 owners that Sigma is finally taking interest in M4/3 systems cameras. In Future we do expect ART series lenses dedicated for M4/3 system cameras.

Sigma MFT lens patent

Also take a look at the translated text from Sigma

FT san suggests that the embodiment 1 is same to “LEICA DG SUMMILUX 12mm / F1.4 ASPH” of Panasonic. That’s optical formula of both the lenses look exactly same.

Stay with us for LIVE camera rumors | See more Sigma Patents

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Sigma 135mm F1.8 Lens Shipping to Start from April 7, 2017

Sigma 135mm lens image

Pre-order of the lens will go live today and the shipping of the lens will start from April 7, 2017.

Take a look at the major specification of the lens

  • EF-Mount Lens/Full-Frame Format
  • Aperture Range: f/1.8 to f/16
  • Two FLD Elements, Two SLD Elements
  • Super Multi-Layer Coating
  • Hyper Sonic AF Motor, Manual Override
  • Rounded 9-Blade Diaphragm
  • TSC Material, Brass Bayonet Mount
  • Compatible with Sigma USB Dock

The 135mm lens is available for Canon  EF mount , Nikon F Mount and Sigma SA Mount

Pre-order / Buying option

Sigma 135mm f/1.8 DG HSM Art Lens for Canon EF – B&H, Nikon F B&H,  and for Sigma B&H Store.

The shipping information of other announced lenses aren’t not available right now.

  • Sigma 14mm f/1.8 Art
  • Sigma 24-70mm f/2.8 DG OS Art
  • Sigma 100-400 f/5-6.3 OS