• 35mm 861.6mm2
  • 24.6 megapixels
  • ISO 200 - 3200
  • 4/3 224.9mm2
  • 12.3 megapixels
  •  
  • Detailed specifications
  • Sony Alpha DSLR-A900
  • Olympus PEN E-PM1
Links
Prices:    
Manufacturer URL: Manufacturer website Manufacturer website
Predecessor:    
Successor:    
General
Model Number: A900 E-PM1
Alternate Model Number(s):    
Camera Format: Pro SLR Compact System Camera
Currently Manufactured: No No
Retail Price: $2999.99 $499.99
Street Price:    
Date Available: 2008-11-15 2011-09-15
Tripod Mount: Yes Yes
Weight: 33.1 oz (939 g)
includes batteries
13.5 oz (382 g)
includes batteries, kit lens
Size: 6.2 x 4.6 x 3.2 in.
(156 x 117 x 82 mm)
4.3 x 2.5 x 1.3 in.
(110 x 64 x 34 mm)
Waterproof: No No
Waterproof Depth: n/a n/a
Image Sensor
Sensor Type: CMOS Live MOS
Sensor Manufacturer: Sony Panasonic
Effective Megapixels: 24.6 12.3
Sensor Format: 35mm 4/3
Sensor size: 861.6mm2 (35.90mm x 24.00mm) 224.9mm2 (17.30mm x 13.00mm)
Approximate Pixel Pitch: 5.94 microns 4.29 microns
Focal Length Multiplier: 1.0x 2.0x
Aspect Ratio: 3:2, 16:9 4:3
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 52
DxO Color Depth Score (bits): 23.7 21.0
DxO Dynamic Range Score (evs): 12.3 10.3
DxO Maximum Effective ISO Score (iso): 1,431 499
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)
4032 x 3024 (12.2 MP, 4:3),
3200 x 2400 (7.7 MP, 4:3),
2560 x 1920 (4.9 MP, 4:3),
1920 x 1440 (2.8 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), MPO (3D), 12-bit RAW (.ORF)
Continuous-mode frames/second: 5.0 5.3
Video Capture
Can take movies: No Yes
Movie Resolution: 1920x1080 (60i (20Mbps/​17Mbps))
1280x720 (60p (17Mbps/​13Mbps))
1280x720 (30p)
640x480 (30p)
Movie File Format:   AVCHD, Motion JPEG
Composite Video Out: Yes Yes
NTSC/PAL Switchable Video: Yes
Video Usable as Viewfinder: No
HD Video Out: Yes Yes
HD Video Connection: HDMI HDMI
Lens & Optics
Lens Mount: Sony Alpha (Minolta A) Micro Four Thirds
Lens: n/a Olympus 14-42mm f/3.5-5.6 II R MSC M.Zuiko Digital Zoom Lens
Focal Length (35mm equivalent):   28 - 84mm
Focal Length (actual):   14 - 42mm
Zoom Ratio:   3.00x
Aperture Range:   f/3.5 (wide) / f/5.6 (tele) - f/22
Integrated ND Filter: No No
Normal Focus Range:   25 cm to Infinity
9.8 in to Infinity
Macro Focus Range:    
Filter Thread: n/a 37.0mm
Thread Type: n/a n/a
Optical Image Stabilization: No No
Digital Zoom: No Yes
Digital Zoom Values: n/a 2x
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: High-speed, 35-point with Face Detection and Tracking. Auto from all 35 area, Single area from 35 area, Group Target area (9 area) from 35 area, Up to 8 Faces Detected
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 Optional EVF mounted in flash hotshoe
Focus Peaking: No No
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 460,000 dots
Touchscreen: No No
Articulating Screen: No No
Tilt Swivel Screen: No No
Selfie Screen: No No
Max Playback Zoom: 19.0x 14.0x
Top Deck Display: Yes No
Exposure
Maximum ISO (native): 3200  
Minimum ISO (native): 200  
ISO Settings: Auto, 200-3200, Extensions to 100 and 6400 Auto (customizable range), 200 - 12800 (1/3, 1 EV steps)
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, Lamp, Fluorescent, Daylight, Flash, Cloudy, Shade, Underwater, Custom WB, One-touch WB
Shutter Speed Range: 1/8000 - 30 sec 1/4000 - 60 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 324-zone Digital ESP, Center Weighted Average, Spot (~1%, with Highlight/Shadow modes)
Program Auto Exposure: Yes Yes
Aperture Priority: Yes Yes
Shutter Priority: Yes Yes
Full Manual Exposure: Yes Yes
Creative Exposure Modes:   Portrait, e-Portrait, Landscape, Landscape + Portrait, Macro, Sport, Night Scene, Night + Portrait, Children, High Key, Low Key, DIS mode, Nature Macro, Candle, Sunset, Document, Panorama, Fireworks, Beach & Snow, Fisheye Conv, Wide Conv, Macro Conv, 3D, Underwater wide, Underwater macro; Art Filters (Pop Art, Soft Focus, Grainy Film, Pin Hole, Diorama, Dramatic Tone)
Self Timer: 2 or 10 seconds 2 or 12 seconds
Time Lapse (intervalometer):    
High Resolution Composite: No No
Flash
Built-in Flash: No No
Flash Modes: n/a Auto, Red-eye reduction, Red-eye reduction slow sync., Slow sync at 1st curtain, Slow sync at 2nd curtain, Fill-in, Manual (Full, 1/2, 1/4, 1/8, 1/16, 1/32, 1/64), Off. Wireless flash control supported.
Flash Guide Number (ISO 100): n/a 7.0 m / 23.0 ft.
Flash Range Description: n/a Bundled external flash has GN of 7m (ISO 100) or 10m (ISO 200)
Max Flash Sync: 1/250 1/160
Flash Exposure Compensation: +/- 3.0 EV in 0.3EV steps +/- 3.0 EV in 0.3EV steps
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:    
Other Memory:    
Dual Card Slots: Yes No
RAW Capture Support: Yes Yes
Uncompressed Format: RAW, cRAW, RAW+JPEG; (ARW 2.0) 12-bit RAW (.ORF)
Movie File Format:   AVCHD, Motion JPEG
Included Memory:    
Included Memory Type:    
Connectivity
Built-In Wi-Fi: No No
NFC:
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 Yes
Remote Control Type: Wired or wireless Optional RM-UC1 wired remote
Connections (extended): DC input, Multi-connector, Sync termimal, Remote terminal, HDMI Type-C minijack Accessory Port 2, Multi Connector (USB/AV/Remote), Mini HDMI (Type C)
Performance Timing
Cycle time for JPEG shooting in single shot mode (seconds per frame, max resolution): 0.40 0.59
Cycle time for RAW shooting in single shot mode (seconds per frame): 0.41 0.57
Buffer size for RAW shooting in single shot mode (frames): 15 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 5.3
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 0.25 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 0.112 seconds
Shutter lag (full AF, with flash):    
Shutter Lag (prefocused): 0.072 seconds 0.075 seconds
Shutter Lag (notes):   Full Autofocus Lag, Multi-area AF mode = 0.289s
Startup Time: 0.5 seconds 1.8 seconds
Play -> Record Time: 0.3 seconds 0.5 seconds
Flash cycle time, full power:   4.7 seconds
Power
Battery Life, Stills (CIPA Rating Monitor/Live View):   330 shots
Battery Life, Still (CIPA Rating OVF/EVF): 880 shots  
Battery Life, Video:    
Battery Form Factor: Proprietary Proprietary BLS-1 or BLS-5
Usable Battery Types: NP-FM500H Lithium-ion rechargeable Lithium-ion rechargeable
Batteries Included: 1 x Proprietary NP-FM500H Lithium-ion rechargeable Proprietary BLS-1 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). OLYMPUS Viewer 2/[ib] CD-ROM
OS Compatibility: Windows 2000Pro/XP/Vista; Mac OS X (v 10.1.3+)  
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. Sensor-shift Image Stabilization, TruePic VI Image Processor, "FAST" AF System, Full HD movies, 6 Art Filters, Bundled External Flash. Available in Purple, Silver, Pink, White, Black and Brown.