• 35mm 861.6mm2
  • 24.6 megapixels
  • ISO 200 - 3200
  • APS-C 369.7mm2
  • 16.3 megapixels
  • ISO 100 - 12,800
  • Detailed specifications
  • Sony Alpha DSLR-A900
  • Pentax K-01
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Manufacturer URL: Manufacturer website Manufacturer website
Predecessor:    
Successor:    
General
Model Number: A900 K-01
Alternate Model Number(s):    
Camera Format: Pro SLR Compact System Camera
Currently Manufactured: No No
Retail Price: $2999.99 $899.95
Street Price:   $358.95
Date Available: 2008-11-15 2012-03-15
Tripod Mount: Yes Yes
Weight: 33.1 oz (939 g)
includes batteries
21.6 oz (611 g)
includes batteries, kit lens
Size: 6.2 x 4.6 x 3.2 in.
(156 x 117 x 82 mm)
4.8 x 3.1 x 2.3 in.
(122 x 79 x 58 mm)
Waterproof: No No
Waterproof Depth: n/a n/a
Image Sensor
Sensor Type: CMOS CMOS
Sensor Manufacturer: Sony  
Effective Megapixels: 24.6 16.3
Sensor Format: 35mm APS-C
Sensor size: 861.6mm2 (35.90mm x 24.00mm) 369.72mm2 (23.7mm x 15.6mm)
Approximate Pixel Pitch: 5.94 microns 4.81 microns
Focal Length Multiplier: 1.0x 1.5x
Aspect Ratio: 3:2, 16:9 3:2
Color Filter Type: RGBG RGBG
Anti Aliasing Filter: Fixed Fixed
Self-Cleaning: Yes Yes
Sensor shift image stabilization: Yes Yes
On-Sensor Phase Detect: No No
DxO Sensor Score: 79 79
DxO Color Depth Score (bits): 23.7 23.7
DxO Dynamic Range Score (evs): 12.3 12.9
DxO Maximum Effective ISO Score (iso): 1,431 1,135
Image Capture
Image Resolution: 6048 x 4032 (24.4 MP, 3:2),
6048 x 3408 (20.6 MP, Other),
4400 x 2936 (12.9 MP, 3:2),
4400 x 2472 (10.9 MP, 16:9),
3984 x 2656 (10.6 MP, 3:2),
3024 x 2016 (6.1 MP, 3:2),
2896 x 1928 (5.6 MP, 3:2),
3024 x 1704 (5.2 MP, Other),
1984 x 1320 (2.6 MP, 3:2)
4928 x 3264 (16.1 MP, Other),
4224 x 2816 (11.9 MP, 3:2),
3456 x 2304 (8.0 MP, 3:2),
2688 x 1792 (4.8 MP, 3:2),
4352 x 3264 (14.2 MP, 4:3),
3840 x 2880 (11.1 MP, 4:3),
3072 x 2304 (7.1 MP, 4:3),
2304 x 1728 (4.0 MP, 4:3),
4928 x 2776 (13.7 MP, 16:9),
4224 x 2376 (10.0 MP, 16:9),
3456 x 1944 (6.7 MP, 16:9),
2688 x 1512 (4.1 MP, 16:9),
3264 x 3264 (10.7 MP, 1:1),
2880 x 2880 (8.3 MP, 1:1),
2304 x 2304 (5.3 MP, 1:1),
1728 x 1728 (3.0 MP, 1:1)
Image File Format: JPEG (EXIF 2.21), RAW, cRAW, RAW+JPEG; (ARW 2.0) JPEG, 12-bit DNG RAW
Continuous-mode frames/second: 5.0 5.9
Video Capture
Can take movies: No Yes
Movie Resolution: 1920x1080 (30p/​25p/​24p)
1280x720 (60p/​50p/​30p/​25p/​24p)
640x480 (30p/​25p/​24p)
Movie File Format:   MP4 (AVC H.264), AVI/MJPEG for Interval Movie
Composite Video Out: Yes Yes
NTSC/PAL Switchable Video: Yes Yes
Video Usable as Viewfinder: No
HD Video Out: Yes Yes
HD Video Connection: HDMI HDMI
Lens & Optics
Lens Mount: Sony Alpha (Minolta A) Pentax K (KA/KAF/KAF2/3)
Lens: n/a smc PENTAX-DA 40mm F2.8 XS, 5 elements in 4 groups
Focal Length (35mm equivalent):   61mm
Focal Length (actual):   40mm
Zoom Ratio:   1.00x
Aperture Range:   f/2.8 (wide) / f/22 (tele)
Integrated ND Filter: No No
Normal Focus Range:   40 cm to Infinity
15.7 in to Infinity
Macro Focus Range:    
Filter Thread: n/a 27.0mm
Thread Type: n/a 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: 9-point TTL phase detection with 10 assist points, center dual-cross at f/2.8. Contrast Detection: Auto 81 Point, User-Selectable, Center; AF Single (w focus lock, focus/release priority selectable), Face Detection AF, Tracking AF, Manual
Auto Focus Assist Light? Yes Yes
Manual Focus: Yes Yes
Viewfinder
Viewfinder: Optical / LCD (playback only) No / LCD
Viewfinder Type: SLR type; eye-level pentaprism with 100% coverage, 0.74x mag., 20mm eyepoint, -3 to +1 diopter  
Focus Peaking: No Yes
EVF Resolution: n/a n/a
Viewfinder Magnification (35mm equivalent): 0.74x  
Viewfinder Magnification (nominal/claimed): 0.74x  
Display
Eye-level Viewfinder: Yes No
Rear Display: Yes Yes
Rear Display Size (inches): 3.0 3.0
Rear Display Resolution: 921,600 dots 921,000 dots
Touchscreen: No No
Articulating Screen: No No
Tilt Swivel Screen: No No
Selfie Screen: No No
Max Playback Zoom: 19.0x 16.0x
Top Deck Display: Yes No
Exposure
Maximum ISO (native): 3200 12800
Minimum ISO (native): 200 100
ISO Settings: Auto, 200-3200, Extensions to 100 and 6400 Auto: ISO 100-12800 (1, 1/2, 1/3 steps), expandable to ISO 100-25600, Auto ISO range selectable; Manual: ISO 100-12800 (1, 1/2, 1/3 steps), expandable to ISO 100-25600
Auto ISO Mode: Yes Yes
White Balance Settings: Auto, Daylight, Shade, Cloudy, Tungsten, Fluorescent, Flash, Color Temperature from 2,500K to 9,900K, Custom (3) Auto, Daylight, Shade, Cloudy, Fluorescent (D, N, W, L), Tungsten, Flash, CTE
Shutter Speed Range: 1/8000 - 30 sec 1/4000 - 30 sec
Bulb Mode: Yes Yes
Exposure Compensation: +/- 3.0EV in 0.3EV steps +/- 3.0EV in 0.3EV steps
Metering Modes: 40-segment Honeycomb Pattern, Center-weighted, Spot 1024-segment Multi, Center-weighted and Spot
Program Auto Exposure: Yes Yes
Aperture Priority: Yes Yes
Shutter Priority: Yes Yes
Full Manual Exposure: Yes Yes
Creative Exposure Modes:   Scene modes: Portrait, Landscape, Macro, Moving Object, Night Scene Portrait, Sunset, Blue Sky, Forest, Night Scene, Night Scene HDR (JPG only), Night Snap, Food, Pet, Kids, Surf & Snow, Backlight Silhouette, Candlelight, Stage Lighting, Museum; Custom Image modes: Bright, Natural, Portrait, Landscape, Vibrant, Radiant, Muted, Bleach Bypass, Reversal Film, Monochrome (including film filters, infrared, sepia toning), Cross Processing; Digital filters (capture): Extract Color, Toy Camera, Retro, High Contrast, Shading, Invert Color...
Self Timer: 2 or 10 seconds 2, 12 seconds
Time Lapse (intervalometer):   Yes
High Resolution Composite: No No
Flash
Built-in Flash: No Yes
Flash Modes: n/a Auto, Auto + Redeye, On, On + Redeye, Slow Sync, Slow Sync + Redeye, Trailing Curtain Sync, Off
Flash Guide Number (ISO 100): n/a 12.0 m / 39.4 ft.
Flash Range Description: n/a Lens aperture dependent
Max Flash Sync: 1/250 1/180
Flash Exposure Compensation: +/- 3.0 EV in 0.3EV steps -2 to +1 EV
External Flash Connection: Hot shoe, PC-sync Hot Shoe
Built-In Wireless Flash Control:    
Image Storage
Usable Memory Types: CF1 / CF2 / MS Duo / MS PRO Duo / Microdrive SD / SDHC / SDXC
UHS Support:   UHS-I
Other Memory:   UHS-1 compliant
Dual Card Slots: Yes No
RAW Capture Support: Yes Yes
Uncompressed Format: RAW, cRAW, RAW+JPEG; (ARW 2.0) 12-bit DNG RAW
Movie File Format:   MP4 (AVC H.264), AVI/MJPEG for Interval Movie
Included Memory:   0.0 MB
Included Memory Type:    
Connectivity
Built-In Wi-Fi: No No
NFC: No
Bluetooth: No No
Built-In GPS: No No
Microphone Jack: No Yes
Headphone Jack: No No
External Connections: USB 2.0 High Speed USB 2.0 High Speed
PictBridge Compliant: Yes No
DPOF Compliant: Yes Yes
Remote Control: Yes Yes
Remote Control Type: Wired or wireless Optional Infrared
Connections (extended): DC input, Multi-connector, Sync termimal, Remote terminal, HDMI Type-C minijack Mini HMDI (Type-C), 3.5mm stereo microphone input
Performance Timing
Cycle time for JPEG shooting in single shot mode (seconds per frame, max resolution): 0.40 1.91
Cycle time for RAW shooting in single shot mode (seconds per frame): 0.41 2.24
Buffer size for RAW shooting in single shot mode (frames): 15 Unlimited
Cycle time for RAW+JPEG shooting in single shot mode (seconds per shot):    
Camera penalizes early shutter press? No Yes
JPEG shooting speed in burst mode (fps, max resolution): 5.0 5.9
Buffer size for JPEG shooting in burst mode (frames, max resolution): 11 9
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): 0.18 seconds 0.80 seconds
Shutter lag (full AF, tele):    
Shutter lag (full AF, live view - DSLR):    
Shutter lag (prefocused, live view - DSLR):    
Shutter Lag (manual focus): 0.153 seconds 0.105 seconds
Shutter lag (full AF, with flash):   0.85 seconds
Shutter Lag (prefocused): 0.072 seconds 0.120 seconds
Shutter Lag (notes):   Full Autofocus, Multi-area AF mode = 0.768 second
Startup Time: 0.5 seconds 2.4 seconds
Play -> Record Time: 0.3 seconds 1.3 seconds
Flash cycle time, full power:   4.0 seconds
Power
Battery Life, Stills (CIPA Rating Monitor/Live View):   500 shots
Battery Life, Still (CIPA Rating OVF/EVF): 880 shots  
Battery Life, Video:    
Battery Form Factor: Proprietary Proprietary D-LI90
Usable Battery Types: NP-FM500H Lithium-ion rechargeable Lithium-ion rechargeable
Batteries Included: 1 x Proprietary NP-FM500H Lithium-ion rechargeable 1 x Proprietary D-LI90 Lithium-ion rechargeable
Battery Charger Included (dedicated charger or AC/USB adapter): Yes Yes
Dedicated Battery Charger Included:
Internal Charging Supported:
Software
Included Software: Image Data Converter SR, Image Data Lightbox SR, Remote Camera Control (all Windows & Macintosh), Picture Motion Browser (Windows only). Software CD-ROM S-SW120
OS Compatibility: Windows 2000Pro/XP/Vista; Mac OS X (v 10.1.3+) Windows, Mac OS
Miscellaneous
Notes & Features: 24.6MP Full-frame CMOS sensor, In-body SteadyShot Image Stabilization, Intelligent Preview, Enhanced DRO, Magnesium-alloy Body, Dust/Moisture Resistance, 100K Shutter, 3 User Programmable Memory Modes, AF Micro-adjustment, Top Mounted LCD, Quick Navigation system, Custom button, PhotoTV HD output via HDMI optimized for Sony Bravia TVs. Machined aluminum frame under black, white or yellow exterior, 16MP APS-C sensor, Pentax K-Mount, Sensor-shift Shake and Dust Reduction (4-stops), 6fps Burst Mode, Full HD 1080p Movies, HDR mode, Focus peaking in manual focus mode.