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Firmware Update

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

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.


Sigma Patent - 14mm F1.2 and 35mm F1.2

Latest patent surfaced over the, that shows sigma is working on 14mm F1.2 and 35mm F1.2 Lens.

Patent Details
Specification and lens arrangement of embodiment 6
Focal length: 13.92 mm
F No.: 1.28
2ω: 81.14
Image height: 10.82 mm
Lens length; 105.02 mm



Specification and lens arrangement of embodiment 7
Focal length: 34.98 mm
F No.: 1.28
2ω: 33.12
Image height: 10.82 mm
Lens length; 110.14 mm

We have already published that Sigma is working on 12mm F1.4 MFT Lens and 8mm F1.8 lens for MFT


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


Sigma 12mm M4/3 Lens Patent

Sigma patent 12mm F1.4 M4/3 lens patent surfaced over the web. From its focal length and aperture its look like they are planning to announce a new ART series for M4/3 mount. Take a look at the patent details below.

Patent details (Translated)
Subject distance: INF 40 times 200 mm
Focal length: 12.35 12.35 12.32
F number (F number): 1.47 1.48 1.50
full angle of view 2ω (Angle of view): 88.12 88.02 87.77
image height Y (image height): 10.82 10.82 10.82
total lens length (lens length): 86.00 86.00 86.00 eXAMPLE 1 embodiment 1] [ Aberrations at INF] [ Aberration chart at close range Aberrations at 200 mm]

We have also published Sigma Patent – 8mm F1.8 Fisheye For MFT System.

However, earlier Sigma have denied the rumors that Sigma is entering in M4/3 lens mount. But, its look like they have changed their mind.

Sigma Patent - 8mm F1.8 Fisheye For MFT System

Sigma new 8mm F1.8 Fisheye lens patent surfaced over web for M4/3 system cameras. Take a look at the details below


Self-interpretation translated via gogle

Patent Publication No. 2016-184136
Published 2016.10.20
Filing date 2015.3.27
Example 7
INF 120mm
Focal length 7.90 7.60
F-number 1.82 1.83
Full angle of view 2ω 197.08 197.08
The image height Y 11.60 11.71

Sigma More Lens Patents

Patent - Sigma 70-200mm F2.8 Lens

Sigma 70-200mm lens image

Latest patent surfaced over the web suggest that Sigma is now working on a70-200mm F2.8 F2.8 Sports lens.

70-200mm Lens patent details

  • Published 2016.5.12
  • Filing date 2014.10.8
  • Zoom ratio 2.67
  • Focal length 72.41 118.50 193.38
  • F-number 2.92 2.92 2.92
  • Full angle of view 2ω 33.58 20.51 12.56
  • The image height Y 21.63 21.63 21.63
  • The total lens length 250.00 250.00 250.00

The filed on Nov 2014 so can now expect the announcement of the lens end if the year or may be on beginning of 2017. If Sigma announces such lens under a reasonable price tag with better quality Canon and Nikon 70-200mm sales graph will go down for sure.


Sigma Patent - 35mm F2 ART Lens for 4/3 System

According to the latest patent surfaced over the web, Sigma is working on 4/3 system based ART series prime lens, the lens will have 35mm focal length and F2 aperture.. the lens will also feature built in optical image stabilization.

Sigma already have 60mm f/2.8 DN Lens for Micro Four Thirds Mount Cameras , available at B&H and Amazon