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Sigma Fullframe Sensor Based L-Mount Camera Coming in 2020

Sigma L-mount camera coming in 2020 with 60 Megapixel Multilayer Foveon sensor. CEO of Sigma Mr. Kazuto Yamaki  explained their future plans on slides during the CP+ event. Sigma will take help of TSI Semiconductors  for the development of next generation of Foveon sensors.

We will update you soon as we get any new information.

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source dpreviewforum

Dual Layer Foveon Sensor Patent by Sigma

Sigma Patent a Dual layer Foveon for the first time, in general Foveon sensors are made up of three layers. According to patent documents the new sensor will improve the readout speed of the sensor.

Sigma Foveon sensor Details Patent Details

  • [Publication number] Japanese Unexamined Patent Application Publication No. 2018-195961 (P2018-195961A) click here
  • [Publication date] December 6, Heisei 20 (2018.12.6)
  • Image processing signal method, image signal processing apparatus, imaging apparatus

Each pixel has two layers of “B and G” or “G and R” as shown in a figure of embodiment.

We will sure see some improvements in low -light performance and readout speed of Sigma sensor, as we all know Foveon sensor are too good at base ISO but when you reach ISO 400 you can notice noise in your image and even ISO 1600 is bit unacceptable from a Foveon sensor. To solve this issue Sigma removed a layer from sensor and rearranged entire pixel structure. Hope to see some good cameras from Sigma in near future.

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Sigma Patent - New Foveon Sensor

Sigma new sensor patent

One of the biggest news coming from Sigma, Sigma is working on a new Foveon image sensor dedicated for Video purpose. For more details you can look at description below.

Foveon sensor image

Take a look at the patent details below (Translated)
PROBLEM TO BE SOLVED: To provide a high resolution still picture and moving picture using a multi-layer sensor in which all pixels have three or more color photoelectric conversion layers and which do not generate false color in principle, while reducing the data amount And performs high-speed readout.
An image pickup device having color separation in a thickness direction of an element and having photoelectric conversion layers of three or more colors, and control means for controlling reading of the image pickup element. In the image pickup device 200, the pixel information is read out by predetermined resolution for each layer separated in the thickness direction in the thickness direction, and at least one layer out of the color-separated layers of the image pickup element has the pixel information Is read out, and at least one layer is read out pixel information with a resolution lower than the highest resolution. The control unit 130 acquires luminance information from the pixel information of the layer read out with the highest resolution out of the layers separated from the color and outputs the pixel information of the layer other than the layer read out with the highest resolution Color information is acquired from pixel information of each layer so as to have the same resolution.

Patent Details
[Issuing country】 Japan Patent Office (JP)
[Publication type] Published patent publication (A)
[Publication number] Japanese Patent Application Laid-open No. 2017-208651 (P2017-208651A)
[Publication date] November 24, 2017
Title of the Invention Imaging device


Confirmed: Sigma SD2 will have 29MP Foveon X3 Quattro CMOS Image Sensor

image-Next-Sigma-DSLR-to-feWe already published this news  July 30th, 2014 that Sigma CEO said they will use DP2 Quattro camera in upcoming Sigma SD2 camera..

Now today Sigma CEO Kazuto Yamaki again said that Sigma is planning to use the Foveon X3 Quattro Direct sensor of the DP2 Quattro camera in upcoming SD series camera..

First, we started with the sensor development. We had already been discussing what kind of sensor we make with the Foveon, Inc. and we as SIGMA wanted to improve image quality (resolution) by increasing the number of pixels. The Quattro image sensor was born to deal with the increased data. As the first camera to have the new sensor, we chose the dp because of the shockless body and the dedicated lens optimized for the ultra high-resolution capturing. Of course, we’re planning to use the sensor for the SLR SD body.

The first sigma SD1 DSLR was announced on 2012 and it was using the the same sensor of Sigma ‘Merrill’ camera, Sigma SD1 was announced at Photokina 2010.

I was actually hoping for something more better from Sigma for the upcoming SD2 series camera, share your thoughts with us in the comment box…

via –


Sigma Fullframe Sensor Coming


Sigma finally changed its mood , since on December 27th, 2013 sigma representatives told to that (see the full article here), Sigma have no plans to Introduce FullFrame Camera

At Sigma we truly do not see the point of a 24x36mm sensor unless you absolutely must have the 2×3 aspect ratio. The Foveon sensor of both the SD1Merrill and the DP Merrill lines of cameras is superior to the 24x36mm sensors of our competitors.

Now according to a interview published on, Kazuto Yamaki CEO of Sigma said

We receive many request to make a Full Frame Foveon. And we are aware the tendency now is to make larger sensors and with even more Megapixels.

other important points of the interview

– He believes time will come when Mirrorless will outsell DSLR. But DSLR will always exist as a niche product.
– We aim to achieve medium and large format quality with our foveon sensor tech
– Sigma has no plan to make an interchangeable mirrorless system camera yet.
– There is no plan yet to make a DP camera with zoom lens

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Sigma DP2 Quattro HIGH ISO TEST


The Sigma DP2 Quattro high ISO test published, the camera features 29MP Foveon X3 Quattro Direct CMOS Image Sensor & TRUE III Image Processing Engine, but does the multilayer sensor technology really helping Sigma… let’s take a look

Image quality RAW (source at the end)

DP2-Quattro-vs-Nikon-coolpiThe Sigma DP2 Quattro vs Nikon coolpix A – The coolpix old 16.2MP DX-format CMOS sensor producing better images than the Sigma DP2 Quattro…

Nikon Coolpix A from Amazon | B&H |

Continue reading Sigma DP2 Quattro HIGH ISO TEST

New Foveon Sensor Patent By Sigma

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