• 0.98 inch 285.7mm2
  • 4.7 megapixels
  • ISO 100 - 1600
  • APS-C 369.7mm2
  • 10.2 megapixels
  • ISO 100 - 3200
  • Detailed specifications
  • Sigma SD15
  • Sony Alpha DSLR-A230
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Manufacturer URL: Manufacturer website Manufacturer website
Predecessor:    
Successor:    
General
Model Number: SD15 DSLR-A230
Alternate Model Number(s):    
Camera Format: SLR SLR
Currently Manufactured: No No
Retail Price:   $549.00
Street Price: $1,500.00  
Date Available: 2010-06-30 2009-06-15
Tripod Mount: Yes Yes
Weight: 24.0 oz (680 g) 25.6 oz (725 g)
includes batteries
Size: 5.7 x 4.2 x 3.2 in.
(144 x 107 x 81 mm)
5.0 x 3.8 x 2.7 in.
(128 x 97 x 68 mm)
Waterproof: No No
Waterproof Depth: n/a n/a
Image Sensor
Sensor Type: CMOS CCD
Sensor Manufacturer: Foveon X3 Sony
Effective Megapixels: 4.7 10.2
Sensor Format: 0.98 inch APS-C
Sensor size: 285.66mm2 (20.70mm x 13.80mm) 369.72mm2 (23.7mm x 15.6mm)
Approximate Pixel Pitch: 7.84 microns 6.12 microns
Focal Length Multiplier: 1.7x 1.5x
Aspect Ratio: 3:2 3:2
Color Filter Type: Full Color RGBG
Anti Aliasing Filter: Not needed Fixed
Self-Cleaning: No Yes
Sensor shift image stabilization: No Yes
On-Sensor Phase Detect: No No
DxO Sensor Score:   63
DxO Color Depth Score (bits):   22.3
DxO Dynamic Range Score (evs):   11.4
DxO Maximum Effective ISO Score (iso):   531
Image Capture
Image Resolution: 2640 x 1760 (4.6 MP, 3:2),
2640 x 1485 (3.9 MP, 16:9),
1872 x 1248 (2.3 MP, 3:2),
1312 x 880 (1.2 MP, Other)
3872 x 2592 (10.0 MP, Other),
2896 x 1936 (5.6 MP, 3:2),
1920 x 1280 (2.5 MP, 3:2),
3872 x 2176 (8.4 MP, 16:9),
2896 x 1632 (4.7 MP, Other),
1920 x 1088 (2.1 MP, Other)
Image File Format: JPEG (EXIF 2.21), 12-bit RAW (.X3F) JPEG, RAW
Continuous-mode frames/second: 3.0 2.4
Video Capture
Can take movies: No No
Movie Resolution:
Movie File Format:    
Composite Video Out: Yes No
NTSC/PAL Switchable Video: Yes n/a
Video Usable as Viewfinder: No n/a
HD Video Out: Yes
HD Video Connection: HDMI
Lens & Optics
Lens Mount: Sigma SA bayonet Sony Alpha (Minolta A)
Lens: n/a Sony 18-55mm f/3.5-5.6 DT SAM
Focal Length (35mm equivalent):   27 - 83mm
Focal Length (actual):   18 - 55mm
Zoom Ratio:   3.00x
Aperture Range:   f/3.5 - 22 (W), f/5.6 - ?? (T)
Integrated ND Filter: No No
Normal Focus Range:    
Macro Focus Range:    
Filter Thread: n/a 55.0mm
Thread Type: Varies with lens n/a
Optical Image Stabilization: No No
Digital Zoom: No No
Digital Zoom Values: n/a n/a
Auto Focus
Auto Focus: Yes Yes
Auto Focus Type: 5-point phase-difference detection 9-point TTL phase detection (one cross-type sensor) with eye-start AF
Auto Focus Assist Light? Yes Yes
Manual Focus: Yes Yes
Viewfinder
Viewfinder: Optical / LCD (playback only) Optical / LCD (playback only)
Viewfinder Type: SLR type; eye-level pentaprism, 98% coverage, 0.9x mag. SLR type; eye-level pentamirror, 95% coverage, 0.83x mag., 16.5mm eyepoint, -2.5 to +1.0 diopter
Focus Peaking: No No
EVF Resolution: n/a n/a
Viewfinder Magnification (35mm equivalent): 0.53x 0.55x
Viewfinder Magnification (nominal/claimed): 0.90x 0.83x
Display
Eye-level Viewfinder: Yes Yes
Rear Display: Yes Yes
Rear Display Size (inches): 3.0 2.7
Rear Display Resolution: 460,000 dots 230,400 dots
Touchscreen: No No
Articulating Screen: No No
Tilt Swivel Screen: No No
Selfie Screen: No No
Max Playback Zoom:   12.0x
Top Deck Display: Yes No
Exposure
Maximum ISO (native): 1600 3200
Minimum ISO (native): 100 100
ISO Settings: Auto (100-200), Auto with Flash (100-400), 50*, 100, 200, 400, 800,1600, 3200* (*Extended mode) Auto, 100, 200, 400, 800, 1600, 3200
Auto ISO Mode: Yes Yes
White Balance Settings: Auto, Sunlight, Shade, Overcast, Incandescent, Fluorescent, Flash, Custom Auto, Daylight, Shade, Cloudy, Tungsten, Fluorescent, Flash, Custom
Shutter Speed Range: 1/4000 - 30 sec 1/4000 - 30 sec
Bulb Mode: Yes Yes
Exposure Compensation: +/- 3.0EV in 0.3EV steps +/- 2.0EV in 0.3EV steps
Metering Modes: 77-segment Evaluative, Center Weighted Average, Center Area, Spot 40-segment honeycomb pattern, center-weighted, spot
Program Auto Exposure: Yes Yes
Aperture Priority: Yes Yes
Shutter Priority: Yes Yes
Full Manual Exposure: Yes Yes
Creative Exposure Modes:   Portrait, Landscape, Macro, Sports, Sunset, Night Portrait/Night View
Self Timer: 2 or 10 seconds 2 or 10 seconds
Time Lapse (intervalometer):    
High Resolution Composite: No No
Flash
Built-in Flash: Yes Yes
Flash Modes: S-TTL; Forced On, Red-eye Reduction, Slow Sync, Slow Sync/Red-eye Reduction Auto, Fill-flash, Rear sync, Wireless, High-Speed sync, Slow sync, Red-eye reduction: On/Off
Flash Guide Number (ISO 100): 11.0 m / 36.1 ft. 10.0 m / 32.8 ft.
Flash Range Description: n/a Lens dependent
Max Flash Sync: 1/180 1/160
Flash Exposure Compensation: +/- 3.0 EV in 0.3EV steps +/- 2.0 EV in 0.3EV steps
External Flash Connection: Hot Shoe Hot shoe
Built-In Wireless Flash Control:   Full TTL exposure
Image Storage
Usable Memory Types: Microdrive / SD / SDHC MS Duo / MS PRO Duo / SD / SDHC
UHS Support:    
Other Memory:    
Dual Card Slots: No No
RAW Capture Support: Yes Yes
Uncompressed Format: 12-bit RAW (.X3F) RAW
Movie File Format:    
Included Memory: No memory included  
Included Memory Type:    
Connectivity
Built-In Wi-Fi: No No
NFC: No
Bluetooth: No No
Built-In GPS: No No
Microphone Jack: No No
Headphone Jack: No No
External Connections: USB 2.0 Full (LOW) Speed,FireWire USB 2.0 High Speed
PictBridge Compliant: No Yes
DPOF Compliant: No Yes
Remote Control: Yes Yes
Remote Control Type: RS-31 Wireless, CR-21 Wired Optional wireless
Connections (extended): DC input DC input, min-HDMI
Performance Timing
Cycle time for JPEG shooting in single shot mode (seconds per frame, max resolution):   0.48
Cycle time for RAW shooting in single shot mode (seconds per frame):   0.78
Buffer size for RAW shooting in single shot mode (frames):   Unlimited
Cycle time for RAW+JPEG shooting in single shot mode (seconds per shot):    
Camera penalizes early shutter press? Yes
JPEG shooting speed in burst mode (fps, max resolution): 3.0 2.4
Buffer size for JPEG shooting in burst mode (frames, max resolution): 21 21
RAW shooting speed in burst mode (fps):    
Buffer size for RAW shooting in burst mode (frames):    
RAW+JPEG shooting speed in burst mode (fps):    
Buffer Size for RAW+JPEG shooting in burst mode (frames):    
Shutter lag (full AF, wide/mid):   0.19 seconds
Shutter lag (full AF, tele):    
Shutter lag (full AF, live view - DSLR):    
Shutter lag (prefocused, live view - DSLR):    
Shutter Lag (manual focus):   0.182 seconds
Shutter lag (full AF, with flash):   0.22 seconds
Shutter Lag (prefocused):   0.107 seconds
Shutter Lag (notes):   Full Autofocus Wide Area AF lag = 0.204s
Startup Time:   0.6 seconds
Play -> Record Time:   0.2 seconds
Flash cycle time, full power:   4.2 seconds
Power
Battery Life, Stills (CIPA Rating Monitor/Live View):    
Battery Life, Still (CIPA Rating OVF/EVF): 250 shots 510 shots
Battery Life, Video:    
Battery Form Factor: Proprietary BP-21 Proprietary NP-FH50
Usable Battery Types: Lithium-ion rechargeable Lithium-ion rechargeable
Batteries Included: 1 x Proprietary BP-21 Lithium-ion rechargeable 1 x Proprietary NP-FH50 Lithium-ion rechargeable
Battery Charger Included (dedicated charger or AC/USB adapter): Yes Yes
Dedicated Battery Charger Included:
Internal Charging Supported:
Software
Included Software: Sigma Photo Pro 4.0 Software/USB Driver CD-ROM
OS Compatibility: Windows, Mac OS Windows 2000/XP/Vista, Mac OS X (v. 10.13+)
Miscellaneous
Notes & Features: 14MP Foveon X3 Sensor, True II Processor. SteadyShot Sensor-Shift Image Stabilization.