• APS-C 369.7mm2
  • 16.2 megapixels
  • ISO 100 - 12,800
  • APS-C 369.0mm2
  • 28.2 megapixels
  • ISO 100 - 25,600
  • Detailed specifications
  • Sony Alpha SLT-A55V
  • Samsung NX1
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Manufacturer URL: Manufacturer website Manufacturer website
Predecessor:    
Successor:    
General
Model Number: A55 NX1
Alternate Model Number(s): SLT-A55 (w/o GPS)  
Camera Format: SLR Compact System Camera
Currently Manufactured: No No
Retail Price: $849.99 $2799.99
Street Price: $733.99 $1,797.00
Date Available: 2010-10-15 2014-11-28
Tripod Mount: Yes Yes
Weight: 25.6 oz (727 g)
includes batteries, kit lens
45.5 oz (1,290 g)
includes batteries, kit lens
Size: 4.9 x 3.6 x 3.3 in.
(124 x 92 x 85 mm)
5.5 x 4.0 x 2.6 in.
(139 x 102 x 66 mm)
Waterproof: No No
Waterproof Depth: n/a n/a
Image Sensor
Sensor Type: CMOS CMOS
Sensor Manufacturer: Sony Samsung
Effective Megapixels: 16.2 28.2
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: 4.82 microns 3.63 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 Yes
Sensor shift image stabilization: Yes No
On-Sensor Phase Detect: No Yes
DxO Sensor Score: 73 83
DxO Color Depth Score (bits): 23.0 24.2
DxO Dynamic Range Score (evs): 12.4 13.2
DxO Maximum Effective ISO Score (iso): 818 1,363
Image Capture
Image Resolution: 4912 x 3264 (16.0 MP, 3:2),
4912 x 2760 (13.6 MP, 16:9),
3568 x 2368 (8.4 MP, Other),
3568 x 2000 (7.1 MP, 16:9),
2448 x 1624 (4.0 MP, Other),
2448 x 1376 (3.4 MP, 16:9),
12416 x 1856 (23.0 MP, Other),
8192 x 1856 (15.2 MP, Other),
2160 x 5536 (12.0 MP, Other),
2160 x 3872 (8.4 MP, Other),
7152 x 1080 (7.7 MP, Other),
4912 x 1080 (5.3 MP, Other),
1920 x 1080 (2.1 MP, 16:9)
6480 x 4320 (28.0 MP, 3:2),
4560 x 3040 (13.9 MP, 3:2),
3264 x 2176 (7.1 MP, 3:2),
2112 x 1408 (3.0 MP, 3:2),
6480 x 3648 (23.6 MP, 16:9),
4608 x 2592 (11.9 MP, 16:9),
3328 x 1872 (6.2 MP, 16:9),
2048 x 1152 (2.4 MP, 16:9),
4320 x 4320 (18.7 MP, 1:1),
3088 x 3088 (9.5 MP, 1:1),
2160 x 2160 (4.7 MP, 1:1),
1408 x 1408 (2.0 MP, 1:1)
Image File Format: JPEG, RAW (ARW 2.2), RAW+JPEG JPEG, MPO, RAW (.SRW), RAW+JPEG
Continuous-mode frames/second: 9.0 15.2
Video Capture
Can take movies: Yes Yes
Movie Resolution: 1920x1080 (60i/​50i)
1440x1080 (30/​25)
640x480 (30/​25)
4096x2160 (24p)
3840x2160 (30p/​24p)
1920x1080 (60p/​30p/​24p)
1280x720 (60p/​30p)
640x480 (60p/​30p)
1920x1080 (120p)
1280x720 (120p)
640x480 (120p)
Movie File Format: AVCHD, MP4 MP4 (Video: HEVC (H.265) / Sound: 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) Samsung NX
Lens: Sony 18-55mm f/3.5-5.6 DT SAM Samsung 16-50mm f/2-2.8 S ED OIS NX
Focal Length (35mm equivalent): 27 - 83mm 25 - 77mm
Focal Length (actual): 18 - 55mm 16 - 50mm
Zoom Ratio: 3.00x 3.13x
Aperture Range: f/3.5 - 22 (W), f/5.6 - ?? (T) f/2.0 - 22 (W), f/2.8 - 22 (T); 9-blade (rounded) aperture
Integrated ND Filter: No No
Normal Focus Range:   30 cm to Infinity
11.8 in to Infinity
Macro Focus Range:    
Filter Thread: 55.0mm 72.0mm
Thread Type: n/a n/a
Optical Image Stabilization: No Yes
Digital Zoom: No Yes
Digital Zoom Values: n/a Up to 2x Intelli-Zoom
Auto Focus
Auto Focus: Yes Yes
Auto Focus Type: Phase Detection: 15 points (3 points cross type); Wide, Spot, Local. Hybrid contrast/phase-detect AF: 205-point PDAF (153 cross-point type) + 209-point CDAF
Auto Focus Assist Light? Yes Yes
Manual Focus: Yes Yes
Viewfinder
Viewfinder: EVF / LCD EVF / OLED
Viewfinder Type: EVF type; 1.1cm (0.43") 1,152Kdots, 100% coverage, 1.10x mag., 19mm eyepoint, -4 to +4 diopter OLED EVF with eye sensor; XGA (1024x768) 2,359K dots; 100% Field of view; 1.04x Magnification (50mm eq. lens); 21.0mm eyepoint; -4 to +2 diopter
Focus Peaking: No Yes
EVF Resolution:   2,359,296 dots (786,432 pixels)
Viewfinder Magnification (35mm equivalent): 0.73x 0.69x
Viewfinder Magnification (nominal/claimed): 1.10x 1.04x
Display
Eye-level Viewfinder: Yes Yes
Rear Display: Yes Yes
Rear Display Size (inches): 3.0 3.0
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: No
Max Playback Zoom: 11.8x  
Top Deck Display: No Yes
Exposure
Maximum ISO (native): 12800 25600
Minimum ISO (native): 100 100
ISO Settings: Auto (100-1600), 100, 200, 400, 800, 1600, 3200, 6400, 12800. (Multi-frame NR mode up to ISO 25600) Auto, 100 - 25600 (1 or 1/3EV steps); 51200 (extended)
Auto ISO Mode: Yes Yes
White Balance Settings: Auto, Daylight, Shade, Cloudy, Incandescent, Fluorescent, Flash, Custom, Color Temp./ Filter (2500 – 9900K with 19-step Magenta/Green compensation) Auto, Daylight, Cloudy, Fluorescent (W, N, D), Tungsten, Auto+Tungsten, Flash, Custom, K (Manual); Micro Adjustment each 7 steps in Amber/Blue and Green/Magenta axes
Shutter Speed Range: 1/4000 - 30 sec 1/8000 - 30 sec
Bulb Mode: Yes Yes
Exposure Compensation: +/- 2.0EV in 0.3EV steps +/- 5.0EV in 0.3EV steps
Metering Modes: 1200-zone Evaluative, Center-weighted, Spot Multi (221 segments), 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 action, Sunset, Night portrait, Night view, Hand-held Twilight, Sweep Panorama (2D/3D) Action Freeze, Beauty Face, Fireworks, Landscape, Light Trace, Multi-Exposure, Night, Panorama (Live), Rich Tone (HDR), Samsung Auto Shutter, Silhouette, Sunset, Waterfall; Smart Range+, HDR (Auto)
Self Timer: 2 or 10 seconds 2-30 seconds
Time Lapse (intervalometer):   Yes
High Resolution Composite: No No
Flash
Built-in Flash: Yes Yes
Flash Modes: Auto, Off, Fill-flash, Rear sync, Wireless, High-Speed sync, Slow sync, Red-eye reduction: On/Off Smart Flash, Auto, Auto+Red-eye reduction, Fill-in, Fill-in+Red-eye reduction, 1st Curtain, 2nd Curtain, Off
Flash Guide Number (ISO 100): 10.0 m / 32.8 ft. 11.0 m / 36.1 ft.
Flash Range Description: Lens dependent Lens dependent; GN=11 (ISO 100, m)
Max Flash Sync: 1/160 1/250
Flash Exposure Compensation: +/- 2.0 EV in 0.3EV steps +/- 3.0 EV in 0.5EV steps
External Flash Connection: Hot shoe Hot shoe
Built-In Wireless Flash Control: Full TTL exposure Full TTL exposure
Image Storage
Usable Memory Types: MS PRO Duo / SD / SDHC / SDXC SD / SDHC / SDXC
UHS Support:   UHS-II
Other Memory:    
Dual Card Slots: No No
RAW Capture Support: Yes Yes
Uncompressed Format: RAW (ARW 2.2), RAW+JPEG RAW (.SRW), RAW+JPEG
Movie File Format: AVCHD, MP4 MP4 (Video: HEVC (H.265) / Sound: AAC)
Included Memory:   No memory included
Included Memory Type:    
Connectivity
Built-In Wi-Fi: No Yes
NFC: Yes
Bluetooth: No Yes
Built-In GPS: Yes No
Microphone Jack: Yes Yes
Headphone Jack: No Yes
External Connections: USB 2.0 High Speed USB 2.0 High Speed,USB 3.0 Super Speed,Bluetooth,WiFi
PictBridge Compliant: Yes No
DPOF Compliant: Yes No
Remote Control: Yes Yes
Remote Control Type: Optional Wireless or Wired Wi-Fi live view; optional wired
Connections (extended): Type-C HDMI Mini Connector (BRAVIA Sync, PhotoTV HD); Wired Remote Terminal, 3.5mm External Stereo Micophone Jack Wi-Fi (IEEE 802.11b/g/n/ac) with NFC; Bluetooth; Expansion port for grip; Mult-function USB port compatible with wired remote
Performance Timing
Cycle time for JPEG shooting in single shot mode (seconds per frame, max resolution): 0.52 0.41
Cycle time for RAW shooting in single shot mode (seconds per frame): 0.52  
Buffer size for RAW shooting in single shot mode (frames): 28  
Cycle time for RAW+JPEG shooting in single shot mode (seconds per shot):   0.42
Camera penalizes early shutter press? No No
JPEG shooting speed in burst mode (fps, max resolution): 9.0 15.2
Buffer size for JPEG shooting in burst mode (frames, max resolution): 32 53
RAW shooting speed in burst mode (fps):   15.1
Buffer size for RAW shooting in burst mode (frames):   22
RAW+JPEG shooting speed in burst mode (fps):   15.2
Buffer Size for RAW+JPEG shooting in burst mode (frames):   20
Shutter lag (full AF, wide/mid): 0.22 seconds 0.20 seconds
Shutter lag (full AF, tele):    
Shutter lag (full AF, live view - DSLR):    
Shutter lag (prefocused, live view - DSLR):    
Shutter Lag (manual focus): 0.214 seconds 0.079 seconds
Shutter lag (full AF, with flash): 0.48 seconds 0.29 seconds
Shutter Lag (prefocused): 0.103 seconds 0.055 seconds
Shutter Lag (notes): Full AF, wide-area mode = 0.218s Full AF lag, Single-area AF mode, EFC shutter enabled = 0.202s
Startup Time: 0.9 seconds 0.7 seconds
Play -> Record Time: 0.6 seconds 0.7 seconds
Flash cycle time, full power: 3.7 seconds 3.7 seconds
Power
Battery Life, Stills (CIPA Rating Monitor/Live View):   500 shots
Battery Life, Still (CIPA Rating OVF/EVF): 330 shots 500 shots
Battery Life, Video:    
Battery Form Factor: Proprietary NP-FW50 Proprietary BP-1900
Usable Battery Types: Lithium-ion rechargeable 1410mAh Lithium-ion rechargeable
Batteries Included: 1 x Proprietary NP-FW50 Lithium-ion rechargeable 2 x Proprietary BP-1900 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 CD-ROM (includes Picture Motion Browser, Image Data Converter SR, Image Data Lightbox SR) i-Launcher (web version), Power Media Player, Samsung Movie Converter, Samsung Raw Converter, Samsung DNG Converter, Adobe Photoshop Lightroom 5
OS Compatibility: Windows XP SP3/Vista SP2/7, Mac OS X (v.10.3 +)  
Miscellaneous
Notes & Features: SteadyShot INSIDE Image Stabilization, Articulating LCD, 1080i HD Video, Multi-frame NR, Hand-held Twilight, Auto HDR, D-Range Optimizer, 2D/3D Sweep Panorama, Smile Shutter, DOF Preview, 10fps Burst Mode, Built-in GPS. SLT-A55 is identical but without GPS. Available body-only, bundled with 16-50 f/3.5-5.6 PZ OIS lens, or bundled with 16-50mm f/2-2.8 S OIS lens with battery grip, dedicated battery charger and second battery.