• APS-C 369.7mm2
  • 14.2 megapixels
  • ISO 200 - 12,800
  • APS-C 369.0mm2
  • 20.9 megapixels
  • ISO 100 - 51,200
  • Detailed specifications
  • Sony Alpha DSLR-A550
  • Nikon Z50
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Manufacturer URL: Manufacturer website Manufacturer website
Predecessor:    
Successor:    
General
Model Number: DSLR-A550 Z50
Alternate Model Number(s):    
Camera Format: SLR Compact System Camera
Currently Manufactured: No Yes
Retail Price: $1049.99 $999.95
Street Price: $859.40 $806.95
Date Available: 2009-10-08 2019-11-15
Tripod Mount: Yes Yes
Weight: 32.2 oz (912 g)
includes batteries, kit lens
18.8 oz (533 g)
includes batteries, kit lens
Size: 5.4 x 4.1 x 3.3 in.
(137 x 104 x 84 mm)
5.0 x 3.7 x 2.4 in.
(127 x 94 x 60 mm)
Waterproof: No No
Waterproof Depth: n/a n/a
Image Sensor
Sensor Type: CMOS CMOS
Sensor Manufacturer: Sony  
Effective Megapixels: 14.2 20.9
Sensor Format: APS-C APS-C
Sensor size: 369.72mm2 (23.7mm x 15.6mm) 368.95mm2 (23.50mm x 15.70mm)
Approximate Pixel Pitch: 5.16 microns 4.22 microns
Focal Length Multiplier: 1.5x 1.5x
Aspect Ratio: 3:2, 16:9 3:2
Color Filter Type: RGBG RGBG
Anti Aliasing Filter: Fixed None
Self-Cleaning: Yes No
Sensor shift image stabilization: Yes No
On-Sensor Phase Detect: No Yes
DxO Sensor Score: 66  
DxO Color Depth Score (bits): 21.9  
DxO Dynamic Range Score (evs): 11.8  
DxO Maximum Effective ISO Score (iso): 807  
Image Capture
Image Resolution: 4592 x 3056 (14.0 MP, 3:2),
4592 x 2576 (11.8 MP, 16:9),
3344 x 2224 (7.4 MP, 3:2),
3344 x 1872 (6.3 MP, Other),
2288 x 1520 (3.5 MP, Other),
2288 x 1280 (2.9 MP, Other)
5568 x 3712 (20.7 MP, 3:2),
4176 x 2784 (11.6 MP, 3:2),
2784 x 1856 (5.2 MP, 3:2),
5568 x 3128 (17.4 MP, 16:9),
4176 x 2344 (9.8 MP, 16:9),
2784 x 1560 (4.3 MP, 16:9),
3712 x 3712 (13.8 MP, 1:1),
2784 x 2784 (7.8 MP, 1:1),
1856 x 1856 (3.4 MP, 1:1)
Image File Format: JPEG, RAW JPEG (EXIF 2.31), .NEF (RAW), 12 or 14 bit; RAW+JPEG
Continuous-mode frames/second: 6.7 11.0
Video Capture
Can take movies: No Yes
Movie Resolution: 3840x2160 (30p/​25p/​24p)
1920x1080 (120p/​100p/​60p/​50p/​30p/​25p/​24p)
Movie File Format:   MOV, MP4 (Video: H.264/MPEG-4 AVC; Audio: Stereo Linear PCM, AAC)
Composite Video Out: No No
NTSC/PAL Switchable Video: n/a n/a
Video Usable as Viewfinder: n/a n/a
HD Video Out: Yes Yes
HD Video Connection: HDMI HDMI
Lens & Optics
Lens Mount: Sony Alpha (Minolta A) Nikon Z
Lens: Sony 18-55mm f/3.5-5.6 DT SAM Nikon Z DX 16-50mm f/3.5-6.3 VR
Focal Length (35mm equivalent): 27 - 83mm 24 - 75mm
Focal Length (actual): 18 - 55mm 16 - 50mm
Zoom Ratio: 3.00x 3.10x
Aperture Range: f/3.5 - 22 (W), f/5.6 - ?? (T) f/3.5 (wide) / f/6.3 (tele) - f/16
Integrated ND Filter: No
Normal Focus Range:   20 cm to Infinity
7.9 in to Infinity
Macro Focus Range:    
Filter Thread: 55.0mm 46.0mm
Thread Type: n/a n/a
Optical Image Stabilization: No Yes
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 (one cross-type sensor) with eye-start AF; Wide, Spot, Local modes Hybrid Phase/Contrast Detect AF with 209 PDAF points; Pinpoint, Single-Point, Dynamic-area AF, Wide-area AF (S/L), Auto-area AF; Face and Eye-detect AF
Auto Focus Assist Light? Yes Yes
Manual Focus: Yes Yes
Viewfinder
Viewfinder: Optical / LCD EVF / LCD
Viewfinder Type: SLR type; eye-level pentamirror, 95% coverage, 0.80x mag., 19mm eyepoint, -2.5 to +1.0 diopter EVF: 2.36M-dot XGA OLED, 100% coverage, 1.02x magnification, 20mm eyepoint, -3 to +3 diopter, eye sensor
Focus Peaking: No Yes
EVF Resolution: n/a 2,360,000 dots
Viewfinder Magnification (35mm equivalent): 0.53x 0.68x
Viewfinder Magnification (nominal/claimed): 0.80x 1.02x
Display
Eye-level Viewfinder: Yes Yes
Rear Display: Yes Yes
Rear Display Size (inches): 3.0 3.2
Rear Display Resolution: 921,600 dots 1,036,800 dots (345,600 px)
Touchscreen: No Yes
Articulating Screen: Yes Yes
Tilt Swivel Screen: No
Selfie Screen: Yes
Max Playback Zoom: 14.0x  
Top Deck Display: No No
Exposure
Maximum ISO (native): 12800 51200
Minimum ISO (native): 200 100
ISO Settings: Auto (200-1600), 200, 400, 800, 1600, 3200, 6400, 12800 Auto, ISO 100 - 51200, expandable to 204,800
Auto ISO Mode: Yes Yes
White Balance Settings: Auto, Daylight, Shade, Cloudy, Incandescent, Fluorescent, Flash, Custom Auto (2 types), Cloudy, Shade, Direct Sunlight, Flash, Fluorescent (7 types), Incandescent, Kelvin Color Temperature (2,500K-10,000K), Preset manual; Fine tuning available.
Shutter Speed Range: 1/4000 - 30 sec 1/4000 - 30 sec
Bulb Mode: Yes Yes
Exposure Compensation: +/- 2.0EV in 0.3EV steps +/- 5.0EV in 0.3EV steps
Metering Modes: 40-segment Multi Segment, Center-weighted, Spot; (1200 zone evaluative metering in Live View) Matrix metering; Center-weighted (weight of approximately 75% given to 8mm circle in center of frame or weighting can be based on average of entire frame; Spot: meters circle with diameter of about 3.5mm (about 2.5% of frame) centered on selected focus point; Highlight-weighted
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 Custom: U1, U2; Scene Modes: Autumn Colors, Beach / Snow, Blossom, Candlelight, Child, Close-up, Dusk / Dawn, Food, Landscape, Night Landscape, Night Portrait, Party / Indoor, Pet Portrait, Portrait, Sports, Sunset; Special Effects: Night Vision, Super Vivid, Pop, Photo Illustration, Toy Camera Effect, Miniature Effect, Selective Color, Silhouette, High Key, Low Key
Self Timer: 2 or 10 seconds 2/5/10/20s; 1-9 exposures at intervals of 0.5, 1, 2, or 3 seconds
Time Lapse (intervalometer):    
High Resolution Composite: No No
Flash
Built-in Flash: Yes Yes
Flash Modes: Auto, Fill-flash, Rear sync, Wireless, High-Speed sync, Slow sync, Red-eye reduction: On/Off Fill flash, Red-eye reduction, Slow sync, Red-eye reduction with slow sync, Rear-curtain sync, Auto, Auto with red-eye reduction, Auto slow sync, Auto slow sync with red-eye reduction, Flash off; Auto FP High-Speed sync supported
Flash Guide Number (ISO 100): 12.0 m / 39.4 ft. 7.0 m / 23.0 ft.
Flash Range Description: Lens dependent GN=7m/22ft at ISO 100; range depends on lens aperture
Max Flash Sync: 1/160 1/200
Flash Exposure Compensation: +/- 2.0 EV in 0.3EV steps -3 to +1 EV in 0.3EV steps
External Flash Connection: Hot shoe Hot Shoe
Built-In Wireless Flash Control: Full TTL exposure No
Image Storage
Usable Memory Types: MS Duo / MS PRO Duo / SD / SDHC SD / SDHC / SDXC
UHS Support:   UHS-I
Other Memory:    
Dual Card Slots: No No
RAW Capture Support: Yes Yes
Uncompressed Format: RAW .NEF (RAW), 12 or 14 bit; RAW+JPEG
Movie File Format:   MOV, MP4 (Video: H.264/MPEG-4 AVC; Audio: Stereo Linear PCM, AAC)
Included Memory:   No memory included
Included Memory Type:    
Connectivity
Built-In Wi-Fi: No Yes
NFC: No
Bluetooth: No Yes
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,Bluetooth,WiFi
PictBridge Compliant: Yes Yes
DPOF Compliant: Yes Yes
Remote Control: Yes Yes
Remote Control Type: Optional Wireless or Wired Wi-Fi/Bluetooth
Connections (extended): DC input, mini-HDMI, Wired Remote Micro (Type-D) HDMI, Micro-B USB 2.0, 3.5mm Stereo Microphone Jack (plug-in power supported)
Performance Timing
Cycle time for JPEG shooting in single shot mode (seconds per frame, max resolution): 0.41  
Cycle time for RAW shooting in single shot mode (seconds per frame): 0.41  
Buffer size for RAW shooting in single shot mode (frames): 19  
Cycle time for RAW+JPEG shooting in single shot mode (seconds per shot):    
Camera penalizes early shutter press? No
JPEG shooting speed in burst mode (fps, max resolution): 6.7 11.0
Buffer size for JPEG shooting in burst mode (frames, max resolution): 15  
RAW shooting speed in burst mode (fps):   11.0
Buffer size for RAW shooting in burst mode (frames):    
RAW+JPEG shooting speed in burst mode (fps):   11.0
Buffer Size for RAW+JPEG shooting in burst mode (frames):    
Shutter lag (full AF, wide/mid): 0.18 seconds  
Shutter lag (full AF, tele):    
Shutter lag (full AF, live view - DSLR):    
Shutter lag (prefocused, live view - DSLR):    
Shutter Lag (manual focus): 0.178 seconds  
Shutter lag (full AF, with flash): 0.22 seconds  
Shutter Lag (prefocused): 0.074 seconds  
Shutter Lag (notes): Quick AF Live View shutter lag: 0.188s  
Startup Time: 0.5 seconds  
Play -> Record Time: 0.4 seconds  
Flash cycle time, full power: 3.5 seconds  
Power
Battery Life, Stills (CIPA Rating Monitor/Live View):   320 shots
Battery Life, Still (CIPA Rating OVF/EVF): 950 shots 280 shots
Battery Life, Video:   75 minutes
Battery Form Factor: Proprietary NP-FM500H Proprietary EN-EL25
Usable Battery Types: Lithium-ion rechargeable Lithium-ion rechargeable
Batteries Included: 1 x Proprietary NP-FM500H 1 x Proprietary EN-EL25 Lithium-ion rechargeable
Battery Charger Included (dedicated charger or AC/USB adapter): Yes Yes
Dedicated Battery Charger Included: Yes
Internal Charging Supported: Yes
Software
Included Software: Software/USB Driver CD-ROM  
OS Compatibility: Windows 2000/XP/Vista, Mac OS X (v. 10.13+)  
Miscellaneous
Notes & Features: Exmore CMOS Sensor, Variable-angle LCD, SteadyShot In-body Sensor-shift Image Stabilization, Live View, Auto HDR, D-Range Optimizer (Auto, Level 1-5), HDMI Output, 7 fps (AF/AE Locked).