Sigma sd Quattro Mirrorless Digital Camera

Model #C40900

USA Version
Sigma c40900 1
Sigma c40900 1
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Sigma c40900 10
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Diopter Adjustment - 4 to +2 m
Screen Coverage 100%
Viewfinder Pixel Count 2,360,000
Viewfinder Eye Point 21.00 mm
Viewfinder Coverage 100%
Viewfinder Magnification Approx. 1.09x
Display Screen 3" Rear Screen LCD (1,620,000)
Viewfinder Type Electronic
Viewfinder Size Not Specified By Manufacturer


Operating/Storage Temperature Operating32 to 104°F (0 to 40°C)
AC Power Adapter SAC-7 (Optional)
Battery 1x BP-61 Rechargeable Lithium-ion Battery Pack


Weight 22.05 oz / 625 g without battery and card
Dimensions (WxHxD) 5.8 x 3.7 x 3.6" / 147.0 x 95.1 x 90.8 mm


Connectivity HDMI C (Mini), Micro-USB, Wired Remote Port
Internal Memory None


Image Stabilization None
Lens Mount Sigma SA
Camera Format APS-C (1.5x Crop Factor)
Pixels Actual: 33 MegapixelEffective: 29 Megapixel
Max Resolution 19.6 MP: 5424 x 3616
Aspect Ratio 3:2
Sensor Type / Size CMOS, 23.5 x 15.5 mm
File Formats Still Images: JPEG, RAW
Bit Depth 14-bit
Memory Card Type SDSDHCSDXC

Focus Control

Focus Mode Automatic (A), Continuous-servo AF (C), Single-servo AF (S)
Autofocus Points Phase Detection:9
Focus Type Auto & Manual


Max Sync Speed 1 / 180 seconds
Built-in Flash No
External Flash Connection Hot Shoe, PC Terminal
Dedicated Flash System TTL

Exposure Control

Shutter Type: Electronic & MechanicalSpeed: 1/4000 - 30 second, Bulb Mode
ISO Sensitivity Auto, 100-6400
Continuous Shooting Up 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
White Balance Modes Auto, Color Temperature, Custom, Daylight, Flash, Fluorescent, Incandescent, Overcast, Shade
Exposure Modes Modes: Aperture Priority, Manual, Program, Shutter PriorityMetering Range: EV 0.0 - EV 17.0Compensation: -5 EV to +5 EV (in 1/3 EV steps)
Metering Method Center-weighted average metering, Evaluative metering, Spot metering
Remote Control CR-31 Cable Release Switch (Optional)

AV Recording

Video Recording No
Expert Reviews
Amateur photographer.32822919
1 week ago

Foveon X3 Quattro APS-C sensor ISO 100-6,400 2.36-million-dot EVF £799 body only £999 with 30mm f/1.4 lens Sigma is best known as a leading third-party lens producer, but it also has a long history of selling cameras.

  • +

    Excellent image quality at low ISO, Clear and easy-to-use interface, Good level of customisability

  • -

    Poor high ISO performance, Slow autofocus, Low-resolution viewfinder feed

16 September 2016

Once again, Sigma has produces an interesting camera for fans of Foveon sensors (as we are), this time addressing the criticisms we raised when reviewing the two fixed-lens dp Quattro cameras. The dp3 Quattro won't suit everyday snapshooters and may not be ideal for some photo enthusiasts.

Photography blog.34420874
15 September 2016

The new Sigma sd Quattro mirrorless camera continues the three core Sigma camera traditions, namely superb image quality, idiosyncratic user interface, and slow performance. Once again, if you prefer a more leisurely approach to taking pictures, the sd Quattro will reward you with some amazing...

User Reviews
Dp review.33575663
5 August 2016

I keep it short: So far the best Sigma camera. The SD1 Merrill was a big step in terms of quality camera body for Sigma, the SD Quattro improves on this and brings us into the mirrorless era. An to be honest: It's fun to use: Mirrorless rocks!

Product Highlights
  • 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
In The Box
  • Sigma sd Quattro Mirrorless Digital Camera
  • BP-61 Rechargeable Li-Ion Battery Pack
  • BC-61 Battery Charger with AC Cable
  • USB Cable
  • Strap
  • Body Cap
  • Limited 1-Year Warranty
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