Sigma SD1 Merrill Digital SLR Camera

Model #C26900

USA Version
Sigma c26900 1
Sigma c26900 1
Sigma c26900 3
Sigma c26900 2
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Diopter adjustment - 3 to +1.5 m
Screen coverage 100%
Display screen 3" Rear Screen LCD (460000)
Viewfinder type Pentaprism
Viewfinder coverage 98%
Viewfinder magnification Approx. 0.95x


Ac power adapter SAC-4 (Optional)
Battery 1x BP-21 Rechargeable Lithium-Ion Battery Pack


Dimensions (wxhxd) 5.7 x 4.4 x 3.1" / 14.48 x 11.18 x 7.87 cm
Weight 24.7 oz / 700 g Without batteries and memory card


Connectivity AV Output, USB 2.0


Aspect ratio 4:3
File formats Still Images: JPEG, RAW
Max resolution 46MP: 4800 x 3200 @ 3:2
Memory card type CompactFlash
Other resolutions 44.4MP: 4704 x 3136 @ 3:2
21.3MP: 3264 x 2176 @ 3:2
11.1MP: 2336 x 1568 @ 3:2
Pixels 46 Megapixel
Lens mount Sigma SA
Bit depth 12-bit
Sensor type / size CMOS, 23.5 x 15.7 mm
Camera format APS-C / (1.5x Crop Factor)
Camera type Digital SLR with Interchangeable lenses

Focus control

Focus mode Single-servo AF (S), Continuous-servo AF (C), Manual Focus (M)
Focus type Auto


External flash connection Hot Shoe
Built-in flash Yes
Flash modes Flash On
Max sync speed 1 / 180 sec
Continuous shooting Up to 5 fps

Exposure control

Exposure modes Modes: Aperture Priority, Manual, Program, Shutter Priority
Compensation: -3 EV to +3 EV (in 0.33 EV steps)
White balance modes Auto, Flash, Fluorescent, Incandescent, Manual, Overcast, Shade
Shutter 30 - 1/8000 sec
Iso sensitivity 100-6400
Metering method Center-weighted average metering, Multi-zone metering, Spot metering
Expert Reviews
Pc magazine.32817846
18 July 2012

The Sigma SD1 Merrill is built around the uniquely designed image sensor, but a high price, sluggish performance and a time-intensive Raw workflow make it a difficult sell to all but the most devoted Foveon disciples.

  • +

    Excellent build quality. High-quality viewfinder. Good control layout. Unique sensor design. Infrared shooting capability.

  • -

    Expensive. Sluggish performance. Subpar LCD. Substandard JPG output. Difficult Raw workflow. No video support.

Digital camera review.32822754
8 February 2013

The Sigma SD1 Merrill is a DSLR produced by Sigma Corporation, a well-known Japanese firm that specializes in creating lenses for other camera manufacturers. However, Sigma also produces digital cameras, such as the DP2 Merrill that was recently reviewed on our site.

  • +

    Excellent build quality, Useful quick-set menu, Excellent image quality

  • -

    AF problems in low light, Frequent writing to the memory card, Lacks video, live view, top LCD

13 August 2012

Alternatively, the camera can automatically take a picture either two or 10 seconds after the mirror's been moved.

  • +

    Excellent IQ at low ISOs, Images contain bags of detail, Robust build

  • -

    Frustratingly slow write times, Noise at high ISO, No live view or video, Sigma raw software slow

Dp review.32823956
10 April 2012

The SD1 is a no-frills SLR with a very basic feature set that offers exceptional image quality at low ISOs (100-400). However, it's let down by slow file write times and erratic control behaviour during this process.

  • +

    Exceptional image quality at low ISO, especially in Raw mode, Very good build quality (including weatherproofing), Straightforward operation, with external controls for all key functions, Large, clear viewfinder, Excellent grip, extremely comfortable to shoot for extended sessions, Near-perfect...

  • -

    Extremely slow file write speeds, with erratic control behaviour while writing, Poor image quality at high ISO, with green and purple colour blotching in shadows, Evaluative metering somewhat prone to highlight clipping, Overly-conservative highlight clipping warning (can encourage underexposure),...

12 July 2012

The latest DSLR camera from Sigma Corporation is the SD1 Merrill, named for Richard “Dick” Merrill, inventor of the X3F CMOS chip, which uses a type of layering that splits light into red, green, and blue at every one of the 4,800×3,200 photo sites on the sensor.

  • +

    Medium-format color and resolution at a DSLR price

  • -

    Doesn’t offer live view or video capture capabilities

30 September 2011

The SD1 is Sigma’s new flagship SLR system. It uses a brand new sensor with Foveon technology and a nominal resolution of 14.8 MP. This means that the camera is able to record RGB information for every single pixel.

The luminous landscape.32833859
18 July 2011

By Michael Reichmann, with the assistance of Nick Devlinand the participation of Laurence Matson TheSigma SD1is that company's long-awaited APS-C sized camera using a Foveon X3 sensor. The camera was first shown at Photokina in late 2010 and started to ship in June, 2011.

User Reviews
11 July 2015

This is an excellent camera. Can I order an English instruction manual? Also I did not get the Sigma pro 5 software disk in the box as described in the order. After I get the software I can put the camera through its paces. I have followed the FOVEON X3 imaging chip since it was introduced.

22 January 2015

I tested sigma camera SD1 for one day and battery lasted for only 90 shots first charge 72 shots the second charge.(about 73 degrees outdoors) has interesting buffer design 2 or 3 buffers. Indoor portrait photos were below expectations in color and b and w I give it no star (that bad (quality).

Dp review.33575663
25 May 2013

In a first time excuse me for my bad english wrtitten... i'm a french old professionnal photographer and i used more than half of my career the argentic system... When i used for the first time the numeric sensors i had to see that the colors are not really precise when you compare them to the...

Product Highlights
  • 46MP Foveon X3 CMOS Direct Image Sensor
  • 3.0" TFT Color LCD Monitor
  • Lightweight, Solid Magnesium Alloy Body
  • 24 x 16mm APS-C Image Sensor
  • Weather Resistant
  • True II Image Processing Engine
  • 11-Point Twin Cross Sensor Focus System
  • JPEG and RAW Files
  • Up to 6400 ISO Sensitivity
  • Shutter Speeds to 1/8000s
Average Expert Score
Average User Score
In The Box
  • Sigma SD1 Merrill DSLR Camera (Body Only)
  • BP-21 Rechargeable Lithium-ion Battery
  • BC-21 Battery Charger
  • USB Cable
  • Video Cable
  • Neck Strap
  • Eye Cap
  • Body Cap
  • Eyepiece Cap
  • SIGMA Photo Pro Disc
  • SD1 Instruction Manual
  • Limited 1-Year North and South America Warranty Against Manufacturing and Workmanship Defects.
  • Limited 3-Year U.S.A. Extended Warranty Extension Against Manufacturing and Workmanship Defects.
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