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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 March 28th, 2016
A new Sigma ART 24-70mm F2.8 lens patent surfaced over the web, The lens will arrive for Fullframe sensor based DSLRs. We may see some big announcements from Sigma on Photokina 2016 as we have told you earlier.
Patent Details Below
Patent Publication No. 2016-38502
Published 2016.3.22
Filing date 2014.8.8
Example
Zoom ratio 2.74
Wide-angle intermediate telephoto
Focal length 24.85 50.00 68.00
F-number 2.92 2.92 2.93
Full angle of view 2ω 83.71 45.71 34.33
The image height Y 21.63 21.63 21.63
The total lens length 150.73 167.12 178.30
source – bit.ly/22Gpbuh
By admin, on February 24th, 2016
 APS-H one is the equivalent of a 51-megapixel sensor. The compact DP series by Sigma was favored by very limited number of photographers due to the fixed lens issue. To make a big space among photographers Sigma finally jumped in thee mirrorless ship with its two new products SD Quattro and SD Quattro H. Both the camera uses Sigma SA lens mount, that allows shooters to select the Sigma’s lineup of Global Vision lenses.
 29MP APS-C Foveon X3 Quattro CMOS sensor that uses a unique stacked design to deliver full color information at every single pixel without interpolation. Sigma SD Quattro vs SD Quattro H
| Sigma sd Quattro |
Sigma sd Quattro H |
- 29MP APS-C Foveon X3 Quattro CMOS Sensor
- Dual TRUE III Imaging Processing Engine
- Sigma SA Lens Mount
- 2.36m-Dot Electronic Viewfinder
- 3.0″ 1.62m-Dot Main LCD & Sub Monitor
- Phase & Contrast-Detect Hybrid AF System
- Super-Fine Detail Exposure Mode
- ISO 6400 and 3.6 fps Continuous Shooting
- Quick Set Button; Lock Switch
- Focus Peaking; Lossless Compressed Raw
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- 45MP APS-H Foveon X3 Quattro CMOS Sensor
- Dual TRUE III Imaging Processing Engine
- Sigma SA Lens Mount
- 2.36m-Dot Electronic Viewfinder
- 3.0″ 1.62m-Dot Main LCD & Sub Monitor
- Phase & Contrast-Detect Hybrid AF System
- Super-Fine Detail Exposure Mode
- ISO 6400 and 3.8 fps Continuous Shooting
- Quick Set Button; Lock Switch
- Focus Peaking; Lossless Compressed Raw
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The bold word are the differences between the two models. As you can see from the table the the primary difference between the two camera models is the sensor size.
 Display is divided into two parts, one part will always show the camera settings and other will show additional features / live-view / menus. surprisingly the recently announced camera uses 9 points Phase AF system combined with contrast detect AF system for more accuracy.
on the back side of the camera we have 2.3 MP high resolution viewfinder and a 1.62 MP LCD display screen and a side screen on right side (shown in red box) that mainly display camera core settings, example shutter speed, ISO, aperture, etc.,
Pre-order or Buy Sigma SD Quattro & SD Quattro H Mirrorless from B&H Shop
By admin, on February 20th, 2016
 Sigma finally coming with a new ART lens that will cover a 20-150mm range by having a fixed F1.8 Aperture, the lens will arrive next week on CP+ show.
The leaked image of the lens shows its solid construction and yummy look. the lens is designed for APS-C sensor based camera so Canon EF, Nikon F and Sony SA mount.
Take a look at the rumored specification of the lens
- Lens construction: 21 elements in 15 groups
- Three FLD, one SLD elements, one high-refractive-index high-dispersion glass, three high refractive index SLD glass
- Filter size: 82mm
- Shortest focusing distance: 95cm
- Maximum magnification: 1: 6.7
- Total length: 170.7mm
- Maximum diameter: 93.5mm
- Weight: 1490g
- Aperture blades: 9 (circular aperture)
- New thinned ultrasonic motor
- Inner focus, inner zoom
- Suggested retail price in Japan: 167,400 yen (tax included) or around $1,400
- Release Date April 22
The lens is will cost you approx $1,500 and shpping will start from March April 2016.
Sigma 30mm f/1.4 DC DN Contemporary lens
 The Sigma 30mm f/1.4 DC DN Contemporary lens is also coming,
- Lens design: 9 elements in 7 groups (double-sided aspherical lens high refractive index and high dispersion glass)
- Aperture blades: 9 (circular aperture)
- Filter Size: 52mm
- AF motor: stepping motor
- Shortest focusing distance: 30cm
- Inner focus
- Total length: 73.3mm
- Maximum diameter: 64.8mm
- Weight: 265g
- Available in Sony E and Micro Four Thirds mounts
- Release Date: March 18, 2016
- Suggested retail price in Japan: 51,840 yen (tax included) or around $400
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By admin, on January 11th, 2016
Sigma new Lens patent surfaced over the web, the lens patent is of 120-600mm lens. This lens may add a new dimension in Sigma Sports series.
- Patent Publication No. 2015-203827
- Published 2015.11.16
- Filing date 2014.4.16
- Example
- Zoom ratio 4.66
- Focal length 125.15 250.18 583.80
- F number 4.86 5.84 6.50
- Total angle of view 2ω 19.47 9.76 4.18
- The image height Y 21.63
- Overall length of the lens 314.20 371.31 424.96
source – Egami
By admin, on December 15th, 2015
 Sigma latest patent surfaced over the web that shows a 11-22mm ART lens patent, but surprisingly the lens features variable aperture being a ART lens.
Description, self-interpretation of the patent literature
- Patent Publication No. 2015-203734
- Published 2015.11.16
- Filing date 2014.4.11
- Example 1
- Zoom ratio 1.88
- Wide-angle intermediate telephoto
- Focal length 11.33 15.33 21.30
- F-number 4.50 5.00 5.86
- Total angle of view 2ω 126.85 108.80 87.93
- Image height Y 21.63 21.63 21.63
- Overall length of the lens 163.42 156.24 156.59
See more Sigma Patents
By admin, on November 29th, 2015
Sigma 20mm ART lens is new and world first lens that supports MAX F1.4 aperture while having a ultra wide range of 20mm, sure its wide aperture will add more fuel to your creativity.
Recently roger cala of lens rentals .com published a very informative review of the same.
The bottom line here is pretty obvious. Despite being a wider field of view, the Sigma 20mm f/1.4 clearly has a higher resolution than either the Canon or Nikon 24mm f/1.4 lenses do in the center half of the image, and are at least the equal of the others in the outer half. That’s just flat amazing…
Click here to buy the Sigma 20mm F1.4 from Amazon | Sigma 20mm F1.4 for Canon | Nikon from B&H
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