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Sigma sd Quattro Mirrorless Camera

BH #SISDQ • MFR #C40900
Sigma sd Quattro Mirrorless Camera
Key Features
  • 29MP APS-C Foveon X3 Quattro CMOS Sensor
  • Dual TRUE III Imaging Processing Engine
  • Sigma SA Lens Mount
  • 2.36m-Dot Electronic Viewfinder
Sigma is turning camera development on its head by developing a camera specifically to take full advantage of the Global Vision lens series with the release of the sd Quattro Mirrorless Camera with a Sigma SA lens mount. This camera offers the utmost in resolution with a 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. By using a 1:1:4 RGB pixel ratio with a layered design, this eliminates the need for an optical low-pass filter, the sd Quattro can create 19.6MP lossless compressed raw images with a spatial resolution equivalent to, and with richer colors, than that of a 39MP Bayer sensor. These vast quantities of image data are handled quickly and efficiently thanks to a Dual TRUE III image processing engine. Additionally, the APS-C size provides a 1.5x crop factor when compared to a full-frame 35mm sensor.
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Sigma sd Quattro Overview

  • 1Description
  • 229MP APS-C Foveon X3 Quattro CMOS Sensor & Dual TRUE III Processing Engine
  • 3Sigma SA Lens System
  • 4Dual LCD Monitors & Electronic Viewfinder
  • 5Hybrid AF System
  • 6Super-Fine Detail Exposure Mode
  • 7Body Design
  • 8Other Features

Sigma is turning camera development on its head by developing a camera specifically to take full advantage of the Global Vision lens series with the release of the sd Quattro Mirrorless Camera with a Sigma SA lens mount. This camera offers the utmost in resolution with a 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. By using a 1:1:4 RGB pixel ratio with a layered design, this eliminates the need for an optical low-pass filter, the sd Quattro can create 19.6MP lossless compressed raw images with a spatial resolution equivalent to, and with richer colors, than that of a 39MP Bayer sensor. These vast quantities of image data are handled quickly and efficiently thanks to a Dual TRUE III image processing engine. Additionally, the APS-C size provides a 1.5x crop factor when compared to a full-frame 35mm sensor.

Image quality is the key advantage of the Foveon sensor, with the processing and available feature set allowing photographers to benefit as much as possible from the technology. Ensuring sharp imagery, this newly designed sensor has a hybrid phase- and contrast-detect autofocus system with nine selectable points. There is even focus peaking for shooters who prefer the precision of manual focus. Users will also be able to shoot at up to 3.6 fps in High quality and with a sensitivity reaching up to ISO 6400. Also, a Super-Fine Detail exposure mode is available which will take seven exposures and blend them into one exceptionally clean raw image file with a wide dynamic range.

Although optimized for lenses, the sd Quattro still caters to the needs of photographers by offering a plethora of physical controls along with an integrated 2.36m-dot electronic viewfinder for precise eye-level monitoring. Moving down the back of the camera, Sigma has also introduced a dual monitor system comprised of a 3.0" 1.62m-dot main LCD and a sub LCD screen that displays your basic exposure information and more for constant access to your critical settings. Other controls include a dedicated Quick Set button for bringing up the Quick Set Menu at a moment's notice and a lock switch to prevent accidental changes.

29MP APS-C Foveon X3 Quattro CMOS Sensor & Dual TRUE III Processing Engine
At the heart of Sigma's digital imaging system there has always been a Foveon sensor. This 29MP APS-C format Foveon X3 Quattro CMOS sensor represents the latest in this technology, offering outstanding resolution and rich color with smooth gradations and a wide dynamic range by using a layered pixel array. This system stacks the red, green, and blue pixels vertically with a 1:1:4 pixel ratio, allowing full color information to be collected at every photosite and a resolution equivalent to that of a 39MP Bayer array. Additionally, the top layer of blue pixels has a 19.6MP array, resulting in natural raw image data of 5424 x 3616 pixels.

Ensuring the vast amount of image data is handled efficiently and quickly, the sd Quattro utilizes a Dual TRUE III image processing engine. This allows for continuous shooting rates of up to 3.6 fps in High quality for 14 frames as well as working sensitivities up to ISO 6400. It also enables features like the Super-Fine Detail mode, which takes seven unique exposures and blends them into one clean and detailed raw image with a wide dynamic range.
Sigma SA Lens System
Featuring Sigma's SA interchangeable lens mount, nearly every single one of their respected Global Vision series of lenses will be available for use with the sd Quattro. This model features an APS-C size sensor which has a crop factor of approximately 1.5x, meaning that a 50mm lens will have the equivalent field of view of a 75mm lens on a full-frame sensor. Additionally, the lens mount has complete electronic communication, ensuring all functions and features, including autofocus, optical stabilization, and more work correctly.

Current owners of Sigma Global Vision lenses can take advantage of the company's Mount Conversion Service to have lenses converted for use on different mounts. This ensures that a large library of glass will never become obsolete in the event a user invests in a new camera system.
Dual LCD Monitors & Electronic Viewfinder
For composing images and reviewing settings, a bright 3.0" 1.62m-dot LCD is available on the back of the camera. Unique to the sd Quattro series is a sub monitor adjacent to the main LCD which provides constant access to your most critical settings, including aperture, shutter speed, and more. These screens are covered by the same sheet of protective glass for a seamless appearance. For users looking for a more natural eye-level shooting stance, the sd Quattro is also equipped with a 2.36m-dot electronic viewfinder with a 1.09x magnification. A dedicated switch is available for quickly changing between the monitor, viewfinder, or an automatic switching setting.
Hybrid AF System
Equipped with both phase-detect and contrast-detect points, the sd Quattro can capture moving subjects with ease and lock on in no time at all. The system has up to 9 selectable points as well as free move and face detection. Additionally, it has been optimized to function in a range of shooting conditions with an operating range of -1 to 18 EV.
Super-Fine Detail Exposure Mode
Maximizing the performance of the stellar Foveon sensor technology is the Super-Fine Detail exposure mode. This creates seven different exposures of the scene which are then blended into one raw file in X3I format. Combined with processing form the Sigma Photo Pro software, a photographer can work with image data that is super clean and with a wide dynamic range. This can greatly benefit studio and tripod-based work.
Body Design
Known for distinctive camera designs, Sigma's sd Quattro series sports a very unique design with a comfortable grip and physical controls designed for intuitive control. This includes a Quick Set button near the shutter that instantly brings up the Quick Set Menu for access to your most commonly used settings while continuing to look through the viewfinder. On the top of the body, in addition to two command dials, is a Lock switch that prevents accidental changing of settings. This can be further customized to lock only select buttons for ideal functionality. On the rear of the camera are several additional buttons all easily reachable by the right thumb, including the menu button, focus frame button, and AEL/AF button with lever.
Other Features
  • Low size continuous shooting can boost performance to 5.1 fps for up to 28 images.
  • With a 39MP equivalent resolution, the dp Quattro has a setting which can produce Super-High size JPEG images of 7680 x 5120 pixels.
  • Focus peaking function puts a colored outline of white, black, red, or yellow around the in-focus subject matter for confirmation during manual focus.
  • Selectable aspect ratios of 21:9, 16:9, 3:2, 4:3, 7:6, 1:1.
  • Supports the optional PG-41 Power Grip.
  • Auto exposure bracketing of 3 or 5 shots in 1/3 EV steps up to ±3 EV.
  • Remote terminal for using dedicated shutter releases.
  • Micro-USB 3.0 terminal for fast data transfer.
  • PC sync terminal for connecting to external flash or strobe units.
  • Accepts SD, SDHC, and SDXC memory cards and is compatible with Eye-Fi technology.
  • Supported Languages: English, Japanese, German, French, Spanish, Italian, Simplified Chinese, Traditional Chinese, Korean, Russian, Dutch, Polish, Portuguese, Danish, Swedish, Norwegian, and Finnish.

Sigma sd Quattro Specs

Lens Mount
Sigma SA
Sensor Resolution
Actual: 33 Megapixel
Effective: 29 Megapixel (5424 x 3616)
Sensor Type
23.5 x 15.5 mm (APS-C) CMOS
Crop Factor
Image Stabilization
Built-In ND Filter
Capture Type
Still Only
Exposure Control
Shutter Type
Electronic Rolling Shutter 
Shutter Speed
Electronic Front Curtain Shutter
1/4000 to 30 Seconds
Bulb/Time Mode
Bulb Mode
ISO Sensitivity Range
100 to 6400 in Auto Mode
Metering Method
Center-Weighted Average, Evaluative, Spot
Exposure Modes
Aperture Priority, Manual, Program, Shutter Priority
Exposure Compensation
-5 to +5 EV (1/3 EV Steps)
Metering Range
0 to 17 EV
White Balance
Presets: Auto, Color Temperature, Custom, Daylight, Flash, Fluorescent, Incandescent, Overcast, Shade
Continuous Shooting
Up to 3.6 fps at 19.6 MP for up to 14 Frames (Raw)
Up to 5.1 fps at 4.9 MP for up to 28 Frames (Raw)
Still Image Capture
Image Sizes
3:2 Raw / DNG
5424 x 3616
2704 x 1808
16:9 JPEG
7680 x 4320
5424 x 3048
2704 x 1520
1920 x 1080
3:2 JPEG
7680 x 5120
5424 x 3616
2704 x 1808
1920 x 1280
4:3 JPEG
6816 x 5120
4816 x 3616
2400 x 1808
1696 x 1280
1:1 JPEG
5120 x 5120
3616 x 3616
1808 x 1808
1280 x 1280
Aspect Ratio
Image File Format
Bit Depth
IP Streaming
Media/Memory Card Slot
Single Slot: SD/SDHC/SDXC
Video I/O
1x Mini-HDMI Output
Audio I/O
Power I/O
Other I/O
1x Micro-USB (USB 3.2 / 3.1 Gen 1) Output
1x Sigma Proprietary Remote Input
1x PC Sync Socket Output
Global Positioning (GPS, GLONASS, etc.)
Display Size
1,620,000 Dot
Display Type
Fixed LCD
Built-In Electronic
2,360,000 Dot
Eye Point
21 mm
Approx. 1.09x
Diopter Adjustment
-4 to +2
Focus Type
Auto and Manual Focus
Focus Mode
Automatic, Continuous-Servo AF, Single-Servo AF
Autofocus Points
Phase Detection: 9
Autofocus Sensitivity
-1 to +18 EV
Built-In Flash/Light
Maximum Sync Speed
1/180 Second
Dedicated Flash System
External Flash Connection
PC Terminal
Operating Temperature
32 to 104°F / 0 to 40°C
Battery Type
1x BP-61 Rechargeable Lithium-Ion
Tripod Mounting Thread
1x 1/4"-20 Female (Bottom)
Accessory Mounting Thread
Material of Construction
Magnesium Alloy
Dimensions (W x H x D)
5.8 x 3.7 x 3.6" / 147 x 95.1 x 90.8 mm
22.05 oz / 625 g (Body Only)
Packaging Info
Package Weight
3.475 lb
Box Dimensions (LxWxH)
8.5 x 7.8 x 5.4"

Sigma sd Quattro Reviews

Not For The Faint of Heart

By Michael
Rated 5 out of 5
Date: 2023-01-21

Echoing some of what others have said... This is a specific solution/tool for specific problems. If any of the following jabber bits are a deal-breaker, skip this rig and move on: / You are buying a camera with a Foveon chip because you are interested in a more accurate color output than what a Bayer Filter chipped camera (ie, just about everything else made) can do; / You want a camera for taking stills, not something that doubles for video; / You don't want GPS, Bluetooth, or any other kind of getting ratted out by you tech nonsense; / You are not looking for a high-speed shooter. Process wise, this camera is relatively slow. You are some kind of set piece / portrait / act-like-you-have-one-roll-of-film-to-your-name kind of shooter; / You are much more of a manual shooter than automatic; / Set the ISO at 100 and forget about moving of it. You will be disappointed if you do; / Get a couple extra batteries. This camera is a pig w/r/t power consumption; In closing, I haven't had this much fun since the 1980s, when I was doing B&W work using 35mm Medical Recording film.

Am hooked on Foveon

By Robert B.
Rated 5 out of 5
Date: 2022-08-14

It seems some of us can't get enough of the Foveon sensor-- and that is true for me. Photos tend to have a clarity and integrity that is distinctive and almost ineffable. I have been very unhappy watching the dp Quattro line disappear, and I bought this sd camera because I was afraid it might disappear too. I wish someone could tell me what dp and sd stand for. Sigma's nomenclature is very odd and confusing for the uninitiated! Sigma's product designs are all pure genius-- this camera is no exception. One must admire the quality and attention to detail. They are far more capable than detractors know. No, it does not take video, have image stabilization, or easily talk to the Googleverse. That said, I believe the merits and weaknesses of this camera and other Foveon sensor cameras have been analyzed and discussed (mostly superficially) ad nauseum. Be forewarned: accessories for this camera are getting harder to find. The external battery pack appears to no longer be available which nullifies the ingenious body design. Also lenses with the SA Mount are becoming dearer. I hope Sigma will try to maintain its Foveon lines. My camera was rather hard to obtain. I waited almost a month to have it delivered. The worst part was waiting on FedEx which was extraordinarily frustrating and seemed intent on losing my purchase. Increasingly, I want to deal with real people, not bots or (in the case of FedEx) friendly but unempowered service people in far-flung call centers. I would love to see B&H open a branch or outlet in San Francisco! There is a market here. The larger battery on the sd Quattro appears to last much better than I expected. It generally gets me through a morning or afternoon of less than feverish shooting. Despite Sigma's phenomenal attention to detail, I was disappointed that the camera lacked a simple slide cover for the flash mount. Seems like such a simple thing would have made the camera more complete. I often wonder if Sigma was forced to cut costs to the bone to provide the quality the rest of the camera has. Also instructions could be better. I was eager to explore the camera's infrared capabilities-- be careful. It is easy to remove the sensor protector, but not so easy to replace it without a bit of practice! Sigma has excellent websites which seem to (oddly!) steer people increasingly away from Foveon. I wish they could provide more info about best practices-- or more in-depth tutorials. The best info I have seen originate from Rino Giardiello's Nadir Magazine in Italy. I have to credit him most for getting initially excited about this camera.

The Unicorn

By Mark
Rated 5 out of 5
Date: 2022-06-20

There are rare times when you find something that is so unique, and outstandingly unique, that it deserves to be compared to the most iconic example of uniqueness ever spoken of or written about. The Unicorn. The Sigma SD Quattro is a perfect example of something that is worthy of the metaphor. It is not only unique, but ironically it is completely off base for an era of cameras that do everything and anything for you without you ever thinking about it. This camera requires you to think about being a photographer so it can focus on doing what it does best, being a camera that captures amazing images. BUILD: To say it is merely solid is an understatement. If a camera could be a tank this is the tank of cameras. Take the 1976 Canon AE-1 for comparison. The one I own got rolled over by the back wheel of a 2004 Ford Taurus (don't worry about how this happened) and after a quick lens replacement it was back in action and still works in 2022. The SD Quattro is made out of metal, it's square, and it's heavy. It's weather sealed, and it is not light in any sense of the word. It's conspicuous, obtrusive, and something that stands out. It's not retro nor is it futuristic. It just exists, clad in black with plain white markings. Keeping a Sigma Contemporary or Art lens on it will only enhance the scientific like effect. The grip is firmly comfortable and explains the odd indentation in the shape of the camera body. The two click wheels align perfectly with my fingers and are programmable. If Batman needed a camera, this would be the one for him. OPERATION: Possessing the knowledge of taking a picture with a camera that has film in it will the best way to approach this camera. It's most effective mode is Manual and in Program mode (the closest you have to full auto) it will almost get you there almost all of the time. The viewfinder is not particularly great but if you know what you're looking at you'll see all you need to see. It could be compared to a fly by wire setup. For example, if you know what peaking is then it works just as good as a split image for focus. I also love the built in level. It's cool looking. The SD Quattro doesn't even take video so there's no need to comment on that. It does take forever to save and preview pics but what's forever if you're counting in milliseconds to start? Good things take time and with the 39 Megapixel Foveon 3 sensor inside this beast of a camera it's going to take time to get pics saved. PICTURE QUALITY: According to the Sigma Specs " offers 39-megapixel-equivalent resolution". Not only that but some of the most beautiful images that remind of Kodak Ektachrome film from days past but in a digital format. I just can't believe it. The images that this camera produces just blows me away. Do a quick google search about the Foveon3 sensor and you'll understand why. Is it fast? No. Your best pics will come at a cost of 100 ISO but there's an interesting catch. Like film, moving up the ISO numbers will affect your picture quality with noise (grain) as with film speeds (ASA). As I see it, who said that's bad? The grainy weird look of really fast film is what I like. It also takes some of the best black and white pics I've ever seen in a digital format. It's very reminiscent of Kodak T-Max film in this respect. OVERVIEW: Knowing your environment, f-stop, shutter speed, focus, and limitations of your ISO (ASA) will get you the pic you want and you will have to explicitly explain that to the camera. I love this. It's how I learned to shoot and how I will always shoot. It pretty much functions like a film camera and not a digital one. It's the thing I like most. Yes, there are cameras that do more, and I've owned them. Is there a camera that focuses faster? Yes, many. Is there a camera that shoots video (it does not shoot video) and takes pics faster? Yes. Is there a camera that takes beautiful filmic pics at 39 Megapixels that costs under 2k? Absolutely not. Is there another camera that serves it's purpose as well as a self defense apparatus? Definitively no. The SD Quattro is a joy and a delight that really makes me want to be a better photographer than I already am. Purchasing the kit will also get you the 30mm f:1.4 Art lens for $100 bucks (it's $399.99 on it's own). Kinda priceless. Bonus: There's a readily available M42 Screw Mount adapter on Amazon that will allow you to attach some cheap vintage glass to really get a great film look. It's fun but with an APSC sensor remember to multiply your focal length by 1.5. A 50mm is equivalent to a 75mm so be careful what you buy. I got a 50mm Ricoh 1.8 and it's a great macro lens at 75mm equivalent. The advantage is when I'm doing street photography it gives me a good distance to not be obtrusive or disturbing to what I'm shooting without having a giant zoom lens attached. I have a few great lenses that I was able to find for this setup and it's going to be with me a long time.

Not for everyone. Great images.

By Eric
Rated 5 out of 5
Date: 2022-05-15

With its slow operations and less than stellar operational specs, this is not a camera meant to compete with other contemporary digital cameras. But it is still a well-built camera that, with patience and care, will create images that I really like.

A full spectrum camera.

By Daniel
Rated 4 out of 5
Date: 2022-04-12

The ergonomics on this device are great (if you are right-handed) and the construction feels very sturdy. The autofocus may be a bit on the slow side and the battery does feel like like it runs out fairly quickly. Finding used lenses with Sigma AS mounts is a bit more difficult, unless you're in South Korea or Japan (at least according to some popular online marketplaces) but Sigma are still making new lenses fitting this mount, even of they have announced it to be phased out for their newer camera models in favor of the L-mount. However, all these perceived shortcomings are immaterial for me. If it hadn't been mentioned as a passing remark in some promotional material and in select reviews, you wouldn't know it (the manual makes no mention of this either) but with a few seconds of time and a pair of tweezers you can remove the hot mirror IR-blocker (a.k.a. sensor dust protector) and convert the sd quattro into a full-spectrum camera. Your choice of lens filter then determines the wavelengths of light you want to keep. The foveon x3 sensor ensures that your IR or UV photo will actually have measurements on each pixel. This makes this camera's effective resolution for specific wavelength 4 times larger than another converted digital camera, with a single-layer Bayer filter. If you accept that you won't be swapping the lenses out in the field, to avoid damaging the naked CMOS sensor array inside the heart of this device you will have an incredibly fun camera with incredible image quality for your desired application, at a bargain.

Captures more of the visible spectrum

Rated 5 out of 5
Date: 2021-10-05

I've had the Sigma SD Quattro about 6 months and after owning a Sony, Canon, Fujifilm and Nikon Z50 (which I still own), the Sigma has been a revelation of how much COLOR you can actually capture but are prone to miss with the standard Bayer filter array sensor. (Fujifilm is the exception with their slightly different X-Trans sensor.) What sets the Sigma apart is the Foveon sensor that captures MORE of the visible spectrum. Typical cameras using the Bayer filter array try to make up for the elusive colors by tweaking the color science of their software. I have shot comparisons with the Nikon and there is always a noticeable difference in the hues captured by the Sigma (Foveon). Sigma will surprise you with its capture of lilacs, variety of yellows, the subtlety of pastel colors, and intense blues. The SD Quattro is the highest perfection to date (Oct. 2021) of the Foveon sensor. Where the Nikon will capture the green in a plant, shaded with a consistent light to dark green, the Sigma (Foveon) might capture a light avocado green in the highlights, some forest green in the midtones, and a cooler lime green in the shadows because of more blue in the shade. More color within the hue is typical of the Foveon and is noticeable as visibly dynamic color. It is much more than a gradation from light to dark. The SD Quattro does have its limitations such as being optimized for Base ISO of 100, no tilt of the rear LCD, shooting at one-frame-per-second, no Face AF, etc., but it is built like a tank, solid, and handles great. If you prize accurate EXCELLENT color rendition above all else, this camera is an amazing tool.

Exceptional image quality with a lot of quirks

By Mingzhe
Rated 4 out of 5
Date: 2022-10-23

This is very different from the swath of bayer sensor cameras out there. So if you are deciding if you should buy this, you are at the right post, cause I'm gonna lay out all the quirks of this camera, and what you will get if you can workaround those quirks. To start off, exposure. If you can get exposure right the image quality out of this camera is exceptional. To achieve the same level of image quality from a bayer sensor, it will need to have a much higher resolution, then gets downsampled. The difficulty however, is exactly getting the exposure right. I normally do exposure to the right (ETTR) with a bayer sensor camera. This means I make sure the brightest highlight that I want to preserve details is at the right end of the histogram without being clipped, then in post I reduce exposure and/or pull up shadow. That does not work with this camera with high contrast scenes. You will find out that a lot of scenes you deem moderate or even low contrast become high contrast for this camera due to its limited dynamic range. Shadow can only be pulled up 1 stop before there is noticeable uneven noises and color patches, while there are only two stops above middle grey before the highlight is clipped. This camera makes me really question hard what exactly is the brightest highlight that I want to preserve. Knowing this limitation, the camera provides a mode call Super Fine Detail. But it's a workaround that either works extremely well or not at all. (More on that in a bit.) This camera is really a slow pace camera in the sense that it works really slowly and you will also have to slow down to think a lot. A graduated ND filter is probably needed for this camera. But I want to talk more on the SFD mode I mentioned above. This camera has a very limited buffer that doesn't allow many photos to be continuously taken before it has to pause. This has a bad implication on its SFD mode, which takes 7 photos with different exposures and then combines them into a single raw file. I wish it had a lite mode which takes only 5 photos, because with 7 photos and the small buffer, there is a large delay between the second last and the last photo. This means, while SFD mode creates extraordinary fine detailed images, it requires an absolute stationary scene (and of course a tripod). Water surfaces, people, vegetation in a breeze, all of these are problematic. I also need to talk about the file format. Its raw format is not accepted even by macOS. Affinity Photo is able to open its raw files, but you can see the interpretation is a little different from Sigma's own software. If you use SFD mode then even Affinity Photo calls it quits. DxO PureRaw doesn't understand the raw file whatsoever. Even Adobe DNG converter crashes right away when being fed with its raw files. The camera does offer DNG format recording, but they are 2-3 times as big as the native format for the same photo, and color depth is reduced from 14-bit to 12-bit. It's still more than enough I think. But if you use SFD mode DNG is out of the picture. My workflow with SFD is that I do some initial adjustment with Sigma Photo Pro then export the file to 16-bit tiff, then from there I use Pixelmator Pro (Affinity Photo works terribly with non raw files). Being a mirrorless camera this thing is big, with a protrude chamber to accept Sigma SA mount lenses because they are designed for SLRs. The camera itself is not heavy, but the SA mount lenses are (with the bundled lens the only exception, ironically). So you probably don't want to tote this thing around especially if you wanna do substantial amount of hiking, which is a shame cause this camera is otherwise ideal for landscape photography. Some minor complains about the LCD screen. It's fixed, and it's not a touch screen. They are not dealbreakers but I really wish it had them to speed up just a bit an already very slow workflow. Now let's talk about the sensor. I'm not gonna spend too much time on what Foveon is, you can look it up. What I want to talk more about is the Foveon Quattro sensor that powers this camera. Right, not all Foveon sensors are the same. The Quattro sensor has its green and red layers only 1/4 of the resolution of the blue/luminance layer. So some guess work will need to be done to work out the green and red components of a pixel. Some say this contradicts with the promise of Foveon, but this guess work is simply not the same as the bayer guess work. The image quality from a similar pixel density bayer sensor is no comparison with the Quattro sensor. That said, is it worse than Sigma SD1, of which all 3 layers have the same resolution? I have no idea cause I do not own an SD1. But image details out of this camera outperforms all the bayer sensor cameras that I own. That's for sure. After all the quirks I still give 4 stars to the camera because the camera does well for what it promises and if you want to pick it up you need to keep all these quirks that I mentioned in mind. You can capture phenomenal images if you know how to deal with its quirks.

Excellent Camera with Limits

By Steven
Rated 5 out of 5
Date: 2022-08-23

This camera will take incredible pictures of your take your time. The sensor needs a lot of light, and high iso will result in loss of detail and poorer image quality. And focusing is a little tricky sometimes. Nevertheless, in my opinion, it's worth the sacrifice. Color and detail are exceptional, especially considering the modest price of the body. I have several Sigma SA lenses, and I am quite pleased with them. I also use one sd quattro body as a full spectrum camera. However, choose a different body if you want to capture action or fire off multiple shots in quickly.

See any errors on this page? Let us know

What parameters are displayed in the viewfinder? ...

What parameters are displayed in the viewfinder? Can the viewfinder be used for manual focusing?
Asked by: FP
Shutter Speed, Aperture, Shooting Mode, ISO, and others are displayed in viewfinder, and it can be used for manual focusing.
Answered by: Kevin
Date published: 2021-06-21


Dose it have a duel card slots or just a single card recording?
Asked by: Wei D.
This camera has one card slot.
Answered by: Heather S.
Date published: 2018-08-26

how would this camera react to adverse weather ...

how would this camera react to adverse weather conditions for landscape photography? Dew, rain, etc.
Asked by: Ray
The camera is dust and splash proof. Make sure what ever lens is used is also is dust and splash proof.
Answered by: Reuben
Date published: 2021-06-21


There are 9 AF points and free form focus points called out. Does this camera have the live view focus capabilities of the DP Merrill series cameras *and* the fixed AF system of the SD1M DSLR?
Asked by: Anonymous
Yes, this camera does offer live view focus capability and the same AF system as the Sigma SD1M.
Answered by: Kirk
Date published: 2020-12-23


What resolution is the HDMI output, and can it be used continuously?
Asked by: Jeremy M.
The Sigma sd Quattro and the Sigma sd Quattro H do not shoot video only still photos.
Answered by: Robert K.
Date published: 2018-08-26


Does this camera have the IR filter like the Quattro H?
Asked by: Craig
Per Sigma's website, this body includes "Removable IR filter for additional B&W effects"
Answered by: Mark
Date published: 2022-07-14

All the other APS-C lens from sigma comptible ...

All the other APS-C lens from sigma comptible with this model or the sigma fp ?
Asked by: Thomas
The Sigma sd Quattro takes SA-mount lenses and the Sigma fp takes L-mount lenses. The sd Quattro will take APS-C and Full-frame lenses as long as they are SA-mount. The Sigma fp is a full-frame L-mount camera and needs the Sigma MC-21 SA-to-L mount adapter ( You can use APS-C lenses on the Sigma fp if you use the camera in Super35 crop mode.
Answered by: Jeremy
Date published: 2021-06-21


In the specifications, it says: Continuous ShootingUp to 3.6 fps at 19.6 MP for up to 14 frames in raw formatUp to 5.1 fps at 4.9 MP for up to 28 frames in raw format. What are the specs when shooting in JPG only?
Asked by: Chuck L.
The buffer for JPG continuous shooting is 12 frames per second.
Answered by: Heather S.
Date published: 2018-08-26
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