Sigma SD1 Foveon X3 DSLR Camera
The Sigma SD1 is a 4800 x 3200 x 3 layers (46MP total) APS-C DSLR camera — known for its Foveon X3 APS-C Sensor and Dual TRUE II Processor. Check GearFocus for current availability, with buyer protection on every purchase.
Sigma SD1 Foveon X3 DSLR Camera
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Overview — Sigma SD1
Key Features — Sigma SD1
Foveon X3 APS-C Sensor: Captures full color data at every pixel across three stacked layers, totaling 46MP of image data at 4800 x 3200 per layer — unlike Bayer sensors that interpolate color.
Dual TRUE II Processor: Twin image processors handle the large data output of the three-layer Foveon sensor for efficient file processing.
11-Point All Cross-Type AF: Every one of the 11 phase-detection autofocus points is cross-type, improving subject acquisition accuracy across the frame.
Magnesium Alloy Construction: Rigid magnesium alloy body with weather sealing makes the camera suitable for use in dust and moisture-prone environments.
Optical Pentaprism Viewfinder: Provides a bright, accurate optical view of the scene for a traditional DSLR shooting experience.
6 fps Burst Shooting: Continuous shooting at up to 6 frames per second supports fast-moving and action subjects.
Specifications — Sigma SD1
| Spec | Detail |
|---|---|
| Use Cases | Studio |
| Type | DSLR |
| Sensor | APS-C |
| Resolution | 4800 x 3200 x 3 layers (46MP total) |
| Processor | Dual TRUE II |
| ISO Range | 100 – 6400 |
| AF System | Phase Detection |
| AF Points | 11-point (all cross-type) |
| Max Photo Resolution | 4800 x 3200 |
| Burst Rate | 6 fps |
| Image Stabilization | None |
| Display | 3.0 inch LCD |
Description — Sigma SD1
The Sigma SD1 is a DSLR camera centered on the Sigma SA lens mount and driven by a Dual TRUE II image processor. Its APS-C Foveon X3 sensor resolves at 4800 x 3200 pixels across three layers, amounting to 46MP of total captured information. The ISO range runs from 100 to 6400, and the camera supports burst shooting at up to 6 frames per second.
The autofocus system features 11-point phase detection, with all points being cross-type. An optical pentaprism viewfinder handles framing, while a 3.0-inch, 460,000-dot LCD serves for image review and menu navigation. The magnesium alloy body carries a weather-sealed rating.
A built-in pop-up flash and hot shoe are both included. Storage relies on CompactFlash media, and USB connectivity is available. Seven color profiles — Standard, Vivid, Neutral, Portrait, Landscape, Evening, and Night — allow for in-camera image customization.
No image stabilization is included.
Pros — Sigma SD1
- ✓46MP total capture from the APS-C Foveon X3 sensor (4800 x 3200 x 3 layers) delivers high pixel-count files
- ✓All 11 autofocus points are cross-type, offering broad and accurate phase detection coverage
- ✓Magnesium alloy body with weather sealing provides durability in demanding shooting environments
Cons — Sigma SD1
- ✗No video recording capability — maxResolution, frameRates, and bitDepth fields are all absent from videoSpecs
- ✗No image stabilization of any kind — inBodyIS and digitalIS are both false
- ✗No Wi-Fi, Bluetooth, HDMI output, or microphone/headphone jacks listed in connectivity
Reviews — Sigma SD1
Videos — Sigma SD1
Trying Sigma's Best Foveon Camera Yet — snappiness