• 35mm 861.6mm2
  • 24.6 megapixels
  • ISO 200 - 3200
  • 1/2.33 inch 28.2mm2
  • 12.1 megapixels
  • 26.00mm - 624.00mm (35mm eq.)
  • Detailed specifications
  • Sony Alpha DSLR-A900
  • Nikon Coolpix P90
Links
Prices:    
Manufacturer URL: Manufacturer website Manufacturer website
Predecessor:    
Successor:    
General
Model Number: A900 P90
Alternate Model Number(s):    
Camera Format: Pro SLR EVF
Currently Manufactured: No No
Retail Price: $2999.99 $399.95
Street Price:    
Date Available: 2008-11-15 2009-03-15
Tripod Mount: Yes Yes
Weight: 33.1 oz (939 g)
includes batteries
17.5 oz (495 g)
includes batteries
Size: 6.2 x 4.6 x 3.2 in.
(156 x 117 x 82 mm)
4.5 x 3.3 x 3.9 in.
(114 x 83 x 99 mm)
Waterproof: No No
Waterproof Depth: n/a n/a
Image Sensor
Sensor Type: CMOS CCD
Sensor Manufacturer: Sony  
Effective Megapixels: 24.6 12.1
Sensor Format: 35mm 1/2.33 inch
Sensor size: 861.6mm2 (35.90mm x 24.00mm) 28.198mm2 (6.13mm x 4.6mm)
Approximate Pixel Pitch: 5.94 microns 1.53 microns
Focal Length Multiplier: 1.0x n/a
Aspect Ratio: 3:2, 16:9 4:3, 16:9
Color Filter Type: RGBG RGBG
Anti Aliasing Filter: Fixed  
Self-Cleaning: Yes No
Sensor shift image stabilization: Yes No
On-Sensor Phase Detect: No No
DxO Sensor Score: 79  
DxO Color Depth Score (bits): 23.7  
DxO Dynamic Range Score (evs): 12.3  
DxO Maximum Effective ISO Score (iso): 1,431  
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)
4000 x 3000 (12.0 MP, 4:3),
3984 x 2656 (10.6 MP, 3:2),
2992 x 2992 (9.0 MP, 1:1),
3968 x 2232 (8.9 MP, 16:9),
3264 x 2448 (8.0 MP, 4:3),
2592 x 1944 (5.0 MP, 4:3),
2048 x 1536 (3.1 MP, 4:3),
1600 x 1200 (1.9 MP, 4:3),
1280 x 960 (1.2 MP, 4:3),
1024 x 768 (0.8 MP, 4:3),
640 x 480 (0.3 MP, 4:3)
Image File Format: JPEG (EXIF 2.21), RAW, cRAW, RAW+JPEG; (ARW 2.0) JPEG (EXIF 2.2)
Continuous-mode frames/second: 5.0 1.4
Video Capture
Can take movies: No Yes
Movie Resolution: 640x480 (30/​15)
320x240 (15)
Movie File Format:   AVI (Motion JPEG)
Composite Video Out: Yes Yes
NTSC/PAL Switchable Video: Yes Yes
Video Usable as Viewfinder: No
HD Video Out: Yes
HD Video Connection: HDMI
Lens & Optics
Lens Mount: Sony Alpha (Minolta A) n/a
Lens: n/a Nikkor ED lens
Focal Length (35mm equivalent):   26 - 624mm
Focal Length (actual):   4.6 - 110.4mm
Zoom Ratio:   24.00x
Aperture Range:   f/2.8 (Wide) - f/5.0 (Tele)
Integrated ND Filter: No No
Normal Focus Range:   50 cm to Infinity
19.7 in to Infinity
Macro Focus Range:   1 cm to Infinity
0.4 in to Infinity
Filter Thread: n/a n/a
Thread Type: n/a n/a
Optical Image Stabilization: No Yes
Digital Zoom: No Yes
Digital Zoom Values: n/a Up to 4x
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 detect with Face-priority AF; 9-area Auto, 99-area manual select, center
Auto Focus Assist Light? Yes Yes
Manual Focus: Yes No
Viewfinder
Viewfinder: Optical / LCD (playback only) EVF / LCD
Viewfinder Type: SLR type; eye-level pentaprism with 100% coverage, 0.74x mag., 20mm eyepoint, -3 to +1 diopter EVF type; 0.24", 230K pixel color LCD
Focus Peaking: No No
EVF Resolution: n/a  
Viewfinder Magnification (35mm equivalent): 0.74x  
Viewfinder Magnification (nominal/claimed): 0.74x  
Display
Eye-level Viewfinder: Yes Yes
Rear Display: Yes Yes
Rear Display Size (inches): 3.0 3.0
Rear Display Resolution: 921,600 dots 230,000 dots
Touchscreen: No No
Articulating Screen: No Yes
Tilt Swivel Screen: No
Selfie Screen: No
Max Playback Zoom: 19.0x 10.0x
Top Deck Display: Yes
Exposure
Maximum ISO (native): 3200  
Minimum ISO (native): 200  
ISO Settings: Auto, 200-3200, Extensions to 100 and 6400 Auto (64 - 800), 64, 100, 200, 400, 800, 1600, 2000, 3200*, 6400* (* at 3MP or less)
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, Cloudy, Fluorescent, Incandescent, Preset
Shutter Speed Range: 1/8000 - 30 sec 1/2000 - 8 sec
Bulb Mode: Yes No
Exposure Compensation: +/- 3.0EV in 0.3EV steps +/- 2.0EV in 0.3EV steps
Metering Modes: 40-segment Honeycomb Pattern, Center-weighted, Spot 256-segment matrix, Center-weighted, Spot, Spot AF area
Program Auto Exposure: Yes Yes
Aperture Priority: Yes Yes
Shutter Priority: Yes Yes
Full Manual Exposure: Yes Yes
Creative Exposure Modes:    
Self Timer: 2 or 10 seconds 10 or 3 seconds
Time Lapse (intervalometer):    
High Resolution Composite: No No
Flash
Built-in Flash: No Yes
Flash Modes: n/a Auto, Auto with red-eye reduction, Anytime flash, Flash cancel, Slow sync., Rear-curtain sync
Flash Guide Number (ISO 100): n/a n/a
Flash Range Description: n/a Auto ISO: [Wide Angle]: Approx. 0.5 to 8.0m; [Tele]: Approx. 1.7 to 5.0m
Max Flash Sync: 1/250  
Flash Exposure Compensation: +/- 3.0 EV in 0.3EV steps  
External Flash Connection: Hot shoe, PC-sync n/a
Built-In Wireless Flash Control:    
Image Storage
Usable Memory Types: CF1 / CF2 / MS Duo / MS PRO Duo / Microdrive SD / SDHC
UHS Support:    
Other Memory:    
Dual Card Slots: Yes No
RAW Capture Support: Yes No
Uncompressed Format: RAW, cRAW, RAW+JPEG; (ARW 2.0)  
Movie File Format:   AVI (Motion JPEG)
Included Memory:   47.0 MB
Included Memory Type:   Internal
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 High Speed USB 2.0 High Speed
PictBridge Compliant: Yes Yes
DPOF Compliant: Yes Yes
Remote Control: Yes No
Remote Control Type: Wired or wireless  
Connections (extended): DC input, Multi-connector, Sync termimal, Remote terminal, HDMI Type-C minijack  
Performance Timing
Cycle time for JPEG shooting in single shot mode (seconds per frame, max resolution): 0.40 2.02
Cycle time for RAW shooting in single shot mode (seconds per frame): 0.41  
Buffer size for RAW shooting in single shot mode (frames): 15  
Cycle time for RAW+JPEG shooting in single shot mode (seconds per shot):    
Camera penalizes early shutter press? No No
JPEG shooting speed in burst mode (fps, max resolution): 5.0 1.4
Buffer size for JPEG shooting in burst mode (frames, max resolution): 11 13
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 0.53 seconds
Shutter lag (full AF, tele):   0.48 seconds
Shutter lag (full AF, live view - DSLR):    
Shutter lag (prefocused, live view - DSLR):    
Shutter Lag (manual focus): 0.153 seconds  
Shutter lag (full AF, with flash):   0.84 seconds
Shutter Lag (prefocused): 0.072 seconds 0.015 seconds
Shutter Lag (notes):    
Startup Time: 0.5 seconds 2.8 seconds
Play -> Record Time: 0.3 seconds  
Flash cycle time, full power:   6.6 seconds
Power
Battery Life, Stills (CIPA Rating Monitor/Live View):   200 shots
Battery Life, Still (CIPA Rating OVF/EVF): 880 shots  
Battery Life, Video:    
Battery Form Factor: Proprietary 1 x Proprietary EN-EL5
Usable Battery Types: NP-FM500H Lithium-ion rechargeable Lithium Ion rechargeable
Batteries Included: 1 x Proprietary NP-FM500H Lithium-ion rechargeable 1 x Proprietary EN-EL5 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). Nikon Software Suite CD-ROM
OS Compatibility: Windows 2000Pro/XP/Vista; Mac OS X (v 10.1.3+) Windows Vista (32bit), XP; Mac OS X 10.3.9, 10.4.
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. Optical VR image stabilization, Motion Detection, Best Shot Selector (BSS), In-Camera Red-Eye Fix, Enhanced Face-Priority AF, Smile Mode, Blink Proof.