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By admin, on October 24th, 2016
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
By admin, on May 13th, 2016
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.
source
By admin, on June 17th, 2015
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
By admin, on November 19th, 2014
A new patent surfaced over the web that shows Sigma 17-55mm lens having a constant aperture range of F2.8 and built-in optical image stabilization, According to the website egami the built of the lens and its specification look more video oriented, the to be announced 17-55mm F2.8 lens may become a standard lens for upcoming Canon and Nikon 4K / 8K DSLRs.
By admin, on May 22nd, 2014
Latest patent literature suggest that the Sigma is working on high quality ART Series zoom lenses for APS-C format DSLR, take a look at the list below
List of Upcoming ART Lenses from Sigma for APS-C DSLRs
- 15-30 mm F1.8
- 17-35mm F1.8
- 16-50 mM F2.8
- 12-24mm F2.8
Sigma is 18-35mm F1.8 is already announced by Sigma and available for Canon, Nikon and Sony Mount – Available for purchase at Amazon and B&H Store
src – egami
By admin, on April 21st, 2014
The 35mm F1.4 OS Lens patent surfaced over the web, the lens is made for fullframe camera and features built-in image stabilization, patent details below
Description and self-interpretation of the patent literature
- Patent Publication No. 2014-48488
- Publication date 2014.3.17
- Filing date 2012.8.31
- Example 6
- Focal length f = 35.58mm
- Fno. 1.45-1.68
- Angles of view 2ω = 63.08-58.94 °
- Image height Y = 21.60mm
- The overall length of the lens 135.98mm
- Mod. 300mm
- 13 pieces of 11-group lens configuration
- Two two-sided aspherical
- One FLD
- Rear focus
- Example 9
- Focal length f = 33.53mm
- Fno. 1.45-1.67
- Angles of view 2ω = 66.32-59.89 °
- Image height Y = 21.63mm
- The overall length of the lens 135.98mm
- Mod. 300mm
- 13 pieces of 11-group lens configuration
- Two two-sided aspherical
- Three ELD
- Rear focus
- Anti-vibration (Group 3)
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src-egami
By admin, on February 17th, 2014
The big problem that Sigma was facing with its Foveon Sensor technology was noise, the previous generation of Foveon sensor show excellent color output at base ISO but significant amount of visible noise starts at ISO 1600 and image become unusable at ISO 3200.
Now Sigma patent a new type of sensor technology that composed of normal and highlight pixels to capture more light and create less noise at High ISO range.
For more details take a look below (machine translated)
- Patent Publication No. 2013-81154
- Publication date 2013.5.2
- Filing date 2011.7.26
- Applicant Fobeon, Inc.
- U.S. Provisional Patent Application No. 61/511, 661 No.
- Foveon patent
- With pixels having different sensitivities imaging device
- First pixel usually pixel
- Second pixel highlight pixels
- Opening is narrow, (saturation is slow) sensitivity is low highlight pixel
- To correct overexposure by referring to the second pixel of the peripheral pixel overexposure
- And the average value of the pixels which are not overexposed, the ratio of the pixel overexposure and weighted average
Also see more details about recently announced sigma dp series camera with optimized high performance APS-C sensor – Sigma DP2 Quattro – Price and Press Release
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