• APS-C 369.0mm2
  • 28.2 megapixels
  • ISO 100 - 25,600
  • APS-C 366.6mm2
  • 20.1 megapixels
  • ISO 100 - 51,200
  • Detailed specifications
  • Samsung NX1
  • Pentax K-S2
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Manufacturer URL: Manufacturer website Manufacturer website
Predecessor:    
Successor:    
General
Model Number: NX1 K-S2
Alternate Model Number(s):    
Camera Format: Compact System Camera SLR
Currently Manufactured: No No
Retail Price: $2799.99 $799.95
Street Price: $1,797.00 $499.00
Date Available: 2014-11-28 2015-02-15
Tripod Mount: Yes Yes
Weight: 45.5 oz (1,290 g)
includes batteries, kit lens 		30.3 oz (859 g)
includes batteries, kit lens
Size: 5.5 x 4.0 x 2.6 in.
(139 x 102 x 66 mm) 		4.8 x 3.6 x 2.6 in.
(122 x 91 x 65 mm)
Waterproof: No No
Waterproof Depth: n/a n/a
Image Sensor
Sensor Type: CMOS CMOS
Sensor Manufacturer: Samsung  
Effective Megapixels: 28.2 20.1
Sensor Format: APS-C APS-C
Sensor size: 368.95mm2 (23.50mm x 15.70mm) 366.6mm2 (23.50mm x 15.60mm)
Approximate Pixel Pitch: 3.63 microns 4.29 microns
Focal Length Multiplier: 1.5x 1.5x
Aspect Ratio: 3:2 3:2
Color Filter Type: RGBG RGBG
Anti Aliasing Filter: None Optional
Self-Cleaning: Yes Yes
Sensor shift image stabilization: No Yes
On-Sensor Phase Detect: Yes No
DxO Sensor Score: 83  
DxO Color Depth Score (bits): 24.2  
DxO Dynamic Range Score (evs): 13.2  
DxO Maximum Effective ISO Score (iso): 1,363  
Image Capture
Image Resolution: 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) 		5472 x 3648 (20.0 MP, 3:2),
4224 x 2816 (11.9 MP, 3:2),
3072 x 2048 (6.3 MP, 3:2),
1920 x 1280 (2.5 MP, 3:2)
Image File Format: JPEG, MPO, RAW (.SRW), RAW+JPEG JPEG (EXIF 2.30), 12-bit RAW (.PEF, .DNG)
Continuous-mode frames/second: 15.2 5.2
Video Capture
Can take movies: Yes Yes
Movie Resolution: 4096x2160 (24p)
3840x2160 (30p/​24p)
1920x1080 (60p/​30p/​24p)
1280x720 (60p/​30p)
640x480 (60p/​30p)
1920x1080 (120p)
1280x720 (120p)
640x480 (120p) 		1920x1080 (30p/​25p/​24p)
1280x720 (60p/​50p)
Movie File Format: MP4 (Video: HEVC (H.265) / Sound: AAC) MPEG-4 AVC/H.264 (MOV)
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: Samsung NX Pentax K (KA/KAF/KAF2/3)
Lens: Samsung 16-50mm f/2-2.8 S ED OIS NX smc Pentax-D AL 18-50mm f/4-5.6 DC WR RE; 11 elements in 8 groups
Focal Length (35mm equivalent): 25 - 77mm 27 - 75mm
Focal Length (actual): 16 - 50mm 18 - 50mm
Zoom Ratio: 3.13x 2.78x
Aperture Range: f/2.0 - 22 (W), f/2.8 - 22 (T); 9-blade (rounded) aperture f/4 - f/22 (wide) / f/5.6 - f/32 (tele)
Integrated ND Filter: No No
Normal Focus Range: 30 cm to Infinity
11.8 in to Infinity 		30 cm to Infinity
11.8 in to Infinity
Macro Focus Range:    
Filter Thread: 72.0mm 58.0mm
Thread Type: n/a n/a
Optical Image Stabilization: Yes No
Digital Zoom: Yes No
Digital Zoom Values: Up to 2x Intelli-Zoom n/a
Auto Focus
Auto Focus: Yes Yes
Auto Focus Type: Hybrid contrast/phase-detect AF: 205-point PDAF (153 cross-point type) + 209-point CDAF SAFOX 11 TTL phase-matching: 11 points (9 cross type focus points in the center)
Auto Focus Assist Light? Yes Yes
Manual Focus: Yes Yes
Viewfinder
Viewfinder: EVF / OLED Optical / LCD
Viewfinder Type: 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 SLR type; eye-level pentaprism, ~100% coverage, 0.95x mag., 20.5mm eyepoint, -2.5 to +1.5 diopter
Focus Peaking: Yes Yes
EVF Resolution: 2,359,296 dots (786,432 pixels) n/a
Viewfinder Magnification (35mm equivalent): 0.69x 0.63x
Viewfinder Magnification (nominal/claimed): 1.04x 0.95x
Display
Eye-level Viewfinder: Yes Yes
Rear Display: Yes Yes
Rear Display Size (inches): 3.0 3.0
Rear Display Resolution: 1,036,800 dots (345,600 px) 921,600 dots (230,400 px)
Touchscreen: Yes No
Articulating Screen: Yes Yes
Tilt Swivel Screen: No Yes
Selfie Screen: No Yes
Max Playback Zoom:   16.0x
Top Deck Display: Yes No
Exposure
Maximum ISO (native): 25600 51200
Minimum ISO (native): 100 100
ISO Settings: Auto, 100 - 25600 (1 or 1/3EV steps); 51200 (extended) Auto, 100-51200 (1, 1/2 or 1/3 EV steps)
Auto ISO Mode: Yes Yes
White Balance Settings: 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 Auto, Multi Auto, Daylight, Shade, Cloudy, Fluorescent Light (D: Daylight Color, N: Daylight White, W: Cool White, L: Warm White), Tungsten Light, Flash, CTE, Manual, Color Temperature
Shutter Speed Range: 1/8000 - 30 sec 1/6000 - 30 sec
Bulb Mode: Yes Yes
Exposure Compensation: +/- 5.0EV in 0.3EV steps +/- 5.0EV in 0.3EV steps
Metering Modes: Multi (221 segments), Center-weighted, Spot TTL open-aperture: 77 segment Multi, Center-weighted, Spot
Program Auto Exposure: Yes Yes
Aperture Priority: Yes Yes
Shutter Priority: Yes Yes
Full Manual Exposure: Yes Yes
Creative Exposure Modes: 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) Shutter & Aperture Priority (TAv), Sensitivity Priority, Advanced HDR, Scene Mode (Portrait, Landscape, Macro, Moving Object, Night Scene Portrait, Sunset, Blue Sky, Forest, Night Scene, Night Scene HDR*, Night Snap, Food, Pet, Kids, Surf & Snow, Backlight Silhouette, Candlelight, Stage Lighting, Museum); Digital filters (capture): Extract Color, Replace Color, Toy Camera, Retro, High Contrast, Shading, Invert Color, Unicolor Bold, Bold Monochrome; Dynamic range adjustment: Highlight, shadow
Self Timer: 2-30 seconds 2 or 12 seconds
Time Lapse (intervalometer): Yes Yes
High Resolution Composite: No No
Flash
Built-in Flash: Yes Yes
Flash Modes: Smart Flash, Auto, Auto+Red-eye reduction, Fill-in, Fill-in+Red-eye reduction, 1st Curtain, 2nd Curtain, Off Auto Flash Discharge, Auto Flash + Red-eye Reduction (Auto Picture, Scene) Flash On, Flash On+ Red-eye Reduction, Slow-speed Sync, Trailing Curtain Sync, Manual Flash Discharge (Full-1/128)
Flash Guide Number (ISO 100): 11.0 m / 36.1 ft. 12.0 m / 39.4 ft.
Flash Range Description: Lens dependent; GN=11 (ISO 100, m) GN=12 (m, ISO 100); range depends on lens aperture
Max Flash Sync: 1/250 1/180
Flash Exposure Compensation: +/- 3.0 EV in 0.5EV steps -2 to +1 EV in 0.5EV steps
External Flash Connection: Hot shoe Hot Shoe
Built-In Wireless Flash Control: Full TTL exposure No
Image Storage
Usable Memory Types: SD / SDHC / SDXC SD / SDHC / SDXC
UHS Support: UHS-II UHS-I
Other Memory:    
Dual Card Slots: No No
RAW Capture Support: Yes Yes
Uncompressed Format: RAW (.SRW), RAW+JPEG 12-bit RAW (.PEF, .DNG)
Movie File Format: MP4 (Video: HEVC (H.265) / Sound: AAC) MPEG-4 AVC/H.264 (MOV)
Included Memory: No memory included No memory included
Included Memory Type:    
Connectivity
Built-In Wi-Fi: Yes Yes
NFC: Yes Yes
Bluetooth: Yes No
Built-In GPS: No No
Microphone Jack: Yes Yes
Headphone Jack: Yes No
External Connections: USB 2.0 High Speed,USB 3.0 Super Speed,Bluetooth,WiFi USB 2.0 High Speed,WiFi
PictBridge Compliant: No No
DPOF Compliant: No Yes
Remote Control: Yes Yes
Remote Control Type: Wi-Fi live view; optional wired Optional IR or Wi-Fi
Connections (extended): Wi-Fi (IEEE 802.11b/g/n/ac) with NFC; Bluetooth; Expansion port for grip; Mult-function USB port compatible with wired remote Micro (Type D) HMDI
Performance Timing
Cycle time for JPEG shooting in single shot mode (seconds per frame, max resolution): 0.41 0.35
Cycle time for RAW shooting in single shot mode (seconds per frame):    
Buffer size for RAW shooting in single shot mode (frames):    
Cycle time for RAW+JPEG shooting in single shot mode (seconds per shot): 0.42 0.35
Camera penalizes early shutter press? No No
JPEG shooting speed in burst mode (fps, max resolution): 15.2 5.2
Buffer size for JPEG shooting in burst mode (frames, max resolution): 53 28
RAW shooting speed in burst mode (fps): 15.1 5.2
Buffer size for RAW shooting in burst mode (frames): 22 9
RAW+JPEG shooting speed in burst mode (fps): 15.2 5.2
Buffer Size for RAW+JPEG shooting in burst mode (frames): 20 6
Shutter lag (full AF, wide/mid): 0.20 seconds 0.12 seconds
Shutter lag (full AF, tele):    
Shutter lag (full AF, live view - DSLR):   0.75 seconds
Shutter lag (prefocused, live view - DSLR):   0.214 seconds
Shutter Lag (manual focus): 0.079 seconds 0.098 seconds
Shutter lag (full AF, with flash): 0.29 seconds 0.15 seconds
Shutter Lag (prefocused): 0.055 seconds 0.077 seconds
Shutter Lag (notes): Full AF lag, Single-area AF mode, EFC shutter enabled = 0.202s  
Startup Time: 0.7 seconds 1.0 seconds
Play -> Record Time: 0.7 seconds 0.2 seconds
Flash cycle time, full power: 3.7 seconds 2.3 seconds
Power
Battery Life, Stills (CIPA Rating Monitor/Live View): 500 shots  
Battery Life, Still (CIPA Rating OVF/EVF): 500 shots 410 shots
Battery Life, Video:    
Battery Form Factor: Proprietary BP-1900 Proprietary D-LI109
Usable Battery Types: 1410mAh Lithium-ion rechargeable Lithium-ion rechargeable
Batteries Included: 2 x Proprietary BP-1900 Lithium-ion rechargeable 1 x Proprietary D-LI109 Lithium-ion rechargeable
Battery Charger Included (dedicated charger or AC/USB adapter): Yes Yes
Dedicated Battery Charger Included: Yes Yes
Internal Charging Supported: Yes No
Software
Included Software: i-Launcher (web version), Power Media Player, Samsung Movie Converter, Samsung Raw Converter, Samsung DNG Converter, Adobe Photoshop Lightroom 5 Digital Camera Utility 5 Software CD-ROM
OS Compatibility:    
Miscellaneous
Notes & Features: 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. 20 megapixel AA Filter-less CMOS sensor with Prime MII processor, built-in Wi-Fi with NFC, weather-resistant body, all-new retractable kit zoom lens. The K-S2 will be available in 3 standard colors: black, white, and graphite with an orange accent. RICOH IMAGING is also pleased to announce the color order service for the PENTAX K-S2. The PENTAX K-S2 offers a choice of seven color options in two outdoor-themed collections: three in the Nature Collection; Forest Green, Desert Beige, and Stone Gray as well as four in the Sports Collection: White and Lime, Black and Pink, White with a Racing Stripe, and Black with a Racing Stripe.