• 1/2.35 inch 27.3mm2
  • 8.0 megapixels
  • 36.00mm - 180.00mm (35mm eq.)
  • 1/2.3 inch 28.1mm2
  • 8.3 megapixels
  • 15.00mm (35mm eq.)
  • Detailed specifications
  • Pentax Optio M50
  • Nikon KeyMission 170
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Manufacturer URL: Manufacturer website Manufacturer website
Predecessor:    
Successor:    
General
Model Number: M50 170
Alternate Model Number(s):    
Camera Format: Ultra Compact Action Camera
Currently Manufactured: No Yes
Retail Price: $229.95 $399.95
Street Price: $139.95 $179.00
Date Available: 2008-03-30 2016-10-15
Tripod Mount: Yes Yes
Weight: 4.1 oz (116 g) 4.7 oz (135 g)
includes batteries
Size: 3.7 x 2.2 x 0.9 in.
(94 x 56 x 23 mm)
2.6 x 1.8 x 1.7 in.
(66 x 47 x 43 mm)
Waterproof: No Yes
Waterproof Depth: n/a 98.00 feet (30 meters)
Image Sensor
Sensor Type: CCD CMOS
Sensor Manufacturer:    
Effective Megapixels: 8.0 8.3
Sensor Format: 1/2.35 inch 1/2.3 inch
Sensor size: 27.2556mm2 (6.03mm x 4.52mm) 28.0735mm2 (6.17mm x 4.55mm)
Approximate Pixel Pitch: 1.85 microns 1.61 microns
Focal Length Multiplier: n/a n/a
Aspect Ratio: 4:3 4:3
Color Filter Type:   RGBG
Anti Aliasing Filter:   None
Self-Cleaning: No No
Sensor shift image stabilization: No No
On-Sensor Phase Detect: No No
DxO Sensor Score:    
DxO Color Depth Score (bits):    
DxO Dynamic Range Score (evs):    
DxO Maximum Effective ISO Score (iso):    
Image Capture
Image Resolution: 3264 x 2448 (8.0 MP, 4:3),
2592 x 1944 (5.0 MP, 4:3),
2304 x 1728 (4.0 MP, 4:3),
2048 x 1536 (3.1 MP, 4:3),
1600 x 1200 (1.9 MP, 4:3),
1024 x 768 (0.8 MP, 4:3),
640 x 480 (0.3 MP, 4:3)
3840 x 2160 (8.3 MP, 16:9)
Image File Format: JPEG (EXIF 2.2) JPEG (EXIF 2.3)
Continuous-mode frames/second: n/a n/a
Video Capture
Can take movies: Yes Yes
Movie Resolution: 640x480 (30/​15)
320x240 (30/​15)
3840x2160 (30p/​25p)
1920x1080 (60p/​50p/​30p/​25p)
1920x1080 (120p)
1280x720 (240p)
Movie File Format: AVI (MotionJPEG) MOV (Video: H.264/MPEG-4 AVC, Audio: AAC Stereo)
Composite Video Out: Yes No
NTSC/PAL Switchable Video: Yes n/a
Video Usable as Viewfinder: n/a
HD Video Out: Yes
HD Video Connection: HDMI
Lens & Optics
Lens Mount: n/a n/a
Lens: Pentax zoom lens, 8 elements, 6 groups (4 aspherical elements) Single fixed focus, fixed aperture lens produces 170 degree angle of view
Focal Length (35mm equivalent): 36 - 180mm 15mm
Focal Length (actual): 6.3 - 31.5mm 2.4mm
Zoom Ratio: 5.00x 1.00x
Aperture Range: f/3.5 (wide) / f/5.6 (tele) - ??? f/2.8 (fixed)
Integrated ND Filter: No No
Normal Focus Range: 40 cm to Infinity
15.7 in to Infinity
40 cm to Infinity
15.7 in to Infinity
Macro Focus Range: 10 - 100 cm
3.9 - 39.4 in
 
Filter Thread: n/a n/a
Thread Type: n/a n/a
Optical Image Stabilization: No No
Digital Zoom: Yes
Digital Zoom Values: Up to 5.1x  
Auto Focus
Auto Focus: Yes No
Auto Focus Type: 9-point TTL contrast detection n/a
Auto Focus Assist Light? No n/a
Manual Focus: Yes No
Viewfinder
Viewfinder: LCD No / LCD
Viewfinder Type:    
Focus Peaking: No No
EVF Resolution: n/a n/a
Viewfinder Magnification (35mm equivalent):    
Viewfinder Magnification (nominal/claimed):    
Display
Eye-level Viewfinder: No No
Rear Display: Yes Yes
Rear Display Size (inches): 2.5 1.5
Rear Display Resolution: 230,000 dots 345,000 dots
Touchscreen: No No
Articulating Screen: No No
Tilt Swivel Screen: No No
Selfie Screen: No No
Max Playback Zoom: 8.0x  
Top Deck Display: No
Exposure
Maximum ISO (native):   1600
Minimum ISO (native):   100
ISO Settings: Auto (64 - 3200); 6400 only available in Digital SR mode Auto, 100-1600
Auto ISO Mode: No Yes
White Balance Settings: Auto, daylight, shade, tungsten, fluorescent, custom TBA
Shutter Speed Range: 1/2000 - 4 sec 1/16000 - 1/2 sec
Bulb Mode: No Yes
Exposure Compensation: +/- 2.0EV in 0.3EV steps +/- 2.0EV in 0.3EV steps
Metering Modes: TTL multi-segment, Center-weighted, Spot Matrix, center-weighted
Program Auto Exposure: Yes Yes
Aperture Priority: No No
Shutter Priority: No No
Full Manual Exposure: No No
Creative Exposure Modes: Night Scene, Landscape, Flower, Natural Skin Tone, Portrait, Surf & Snow, Sport, Digital SR (5M), Kids, Pet, Food, Panorama, Digital Wide Angle (5M) TBA
Self Timer: 2 or 10 seconds  
Time Lapse (intervalometer):    
High Resolution Composite: No No
Flash
Built-in Flash: Yes No
Flash Modes: Auto flash, flash on, flash off, red-eye reduction n/a
Flash Guide Number (ISO 100): n/a n/a
Flash Range Description: 14’ (wide, auto ISO), 9.2’ (tele, auto ISO) n/a
Max Flash Sync:    
Flash Exposure Compensation:    
External Flash Connection: n/a n/a
Built-In Wireless Flash Control:   No
Image Storage
Usable Memory Types: SD / SDHC microSD / microSDHC / microSDXC
UHS Support:    
Other Memory:    
Dual Card Slots: No No
RAW Capture Support: No No
Uncompressed Format:    
Movie File Format: AVI (MotionJPEG) MOV (Video: H.264/MPEG-4 AVC, Audio: AAC Stereo)
Included Memory: 51.1 MB 0.0 MB
Included Memory Type: Internal  
Connectivity
Built-In Wi-Fi: No Yes
NFC: No Yes
Bluetooth: No Yes
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,Bluetooth,WiFi
PictBridge Compliant: Yes No
DPOF Compliant: Yes Yes
Remote Control: No Yes
Remote Control Type:   Via Wi-Fi/Bluetooth or included remote control
Connections (extended): DC Input Micro USB 2.0, Micro HDMI (Type-D)
Performance Timing
Cycle time for JPEG shooting in single shot mode (seconds per frame, max resolution):    
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):    
Camera penalizes early shutter press?
JPEG shooting speed in burst mode (fps, max resolution):    
Buffer size for JPEG shooting in burst mode (frames, max resolution):    
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):    
Shutter lag (full AF, tele):    
Shutter lag (full AF, live view - DSLR):    
Shutter lag (prefocused, live view - DSLR):    
Shutter Lag (manual focus):    
Shutter lag (full AF, with flash):    
Shutter Lag (prefocused):    
Shutter Lag (notes):    
Startup Time:    
Play -> Record Time:    
Flash cycle time, full power:    
Power
Battery Life, Stills (CIPA Rating Monitor/Live View): 210 shots 250 shots
Battery Life, Still (CIPA Rating OVF/EVF):    
Battery Life, Video:   60 minutes
Battery Form Factor: Proprietary D-LI78 Proprietary EN-EL12
Usable Battery Types: Lithium-ion rechargeable Lithium-ion rechargeable
Batteries Included: 1 x Proprietary D-LI78 Lithium-ion rechargeable 1x Proprietary EN-EL12 lithium-ion rechargeable
Battery Charger Included (dedicated charger or AC/USB adapter): Yes Yes
Dedicated Battery Charger Included: No
Internal Charging Supported: Yes
Software
Included Software: TBA None; Free downloads: Nikon SnapBridge 360/170 app for iOS and Android devices, KeyMission 360/170 Utility program for PC and Mac
OS Compatibility: TBA  
Miscellaneous
Notes & Features: Captures 170 degree stills and video up to 4K UHD, electronic Vibration Reduction (4K not supported), Waterproof down to 10m/33ft for 60 mins, Shockproof to 2m/6.6ft, Dustproof, Freezeproof (-10C/14F), SnapBridge 360/170 compatible, integrated Wi-Fi, NFC and Bluetooth. The KeyMission 170 comes with a remote control accessory, useful for stopping and starting recording or creating tags while. Optional Waterproof Housing available to extend underwater performance to 40m/131 ft.