• 1/1.7 inch 43.3mm2
  • 12.0 megapixels
  • 37.00mm - 111.00mm (35mm eq.)
  • 1/2.3 inch 28.1mm2
  • 8.3 megapixels
  • 15.00mm (35mm eq.)
  • Detailed specifications
  • Pentax Optio A40
  • Nikon KeyMission 170
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Manufacturer URL: Manufacturer website Manufacturer website
Predecessor:    
Successor:    
General
Model Number: A40 170
Alternate Model Number(s):    
Camera Format: Ultra Compact Action Camera
Currently Manufactured: No Yes
Retail Price: $299.95 $399.95
Street Price:   $179.00
Date Available: 2008-02-15 2016-10-15
Tripod Mount: Yes Yes
Weight: 5.3 oz (150 g)
includes batteries 		4.7 oz (135 g)
includes batteries
Size: 3.6 x 2.2 x 0.9 in.
(91 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: 12.0 8.3
Sensor Format: 1/1.7 inch 1/2.3 inch
Sensor size: 43.32mm2 (7.6mm x 5.7mm) 28.0735mm2 (6.17mm x 4.55mm)
Approximate Pixel Pitch: 1.90 microns 1.61 microns
Focal Length Multiplier: n/a n/a
Aspect Ratio: 4:3 4:3
Color Filter Type: RGBG RGBG
Anti Aliasing Filter:   None
Self-Cleaning: No No
Sensor shift image stabilization: Yes 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: 4000 x 3000 (12.0 MP, 4:3),
3648 x 2736 (10.0 MP, 4:3),
3072 x 2304 (7.1 MP, 4:3),
2592 x 1944 (5.0 MP, 4:3),
2048 x 1536 (3.1 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)
320x240 (30) 		3840x2160 (30p/​25p)
1920x1080 (60p/​50p/​30p/​25p)
1920x1080 (120p)
1280x720 (240p)
Movie File Format: AVI (DivX MPEG-4) 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: SMC Pentax Zoom (7 elements in 5 groups, 3 aspherical) Single fixed focus, fixed aperture lens produces 170 degree angle of view
Focal Length (35mm equivalent): 37 - 111mm 15mm
Focal Length (actual): 7.9 - 23.7mm 2.4mm
Zoom Ratio: 3.00x 1.00x
Aperture Range: f/2.8 (wide) - f/5.4 (tele) - ??? f/2.8 (fixed)
Integrated ND Filter: No No
Normal Focus Range: 35 cm to Infinity
13.8 in to Infinity 		40 cm to Infinity
15.7 in to Infinity
Macro Focus Range: 6 - 40 cm
2.4 - 15.7 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 6x  
Auto Focus
Auto Focus: Yes No
Auto Focus Type: 5 point Contrast Detect AF; spot, tracking, and face recognition n/a
Auto Focus Assist Light? Yes 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: 232,000 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, 50, 100, 200, 400, 800, 1600, 3200 (auto up to 3200 in Digital SR mode) Auto, 100-1600
Auto ISO Mode: Yes Yes
White Balance Settings: Auto, Daylight, Shade, Tungsten, Fluorescent, Manual 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 metering: Multi-segment, Center-weighted, Spot Matrix, center-weighted
Program Auto Exposure: Yes Yes
Aperture Priority: No No
Shutter Priority: Yes No
Full Manual Exposure: Yes No
Creative Exposure Modes: Natural Skin Tone, Half-length Portrait (3MP), Night Scene, Landscape, Flower, Portrait, Kids, Digital SR (5MP), Surf & Snow, Sport, Pet, Text, Food, Frame Composite (3MP), Dynamic Range Adjustment TBA
Self Timer: 2 or 10 seconds  
Time Lapse (intervalometer):    
High Resolution Composite: No No
Flash
Built-in Flash: Yes No
Flash Modes: On, Off, Auto, Redeye, Soft Flash n/a
Flash Guide Number (ISO 100): n/a n/a
Flash Range Description: Auto ISO: Wide: 0.20 - 23 ft (0.06 – 7.1 m); Tele: Approx. 1.15 – 11 ft (0.35 – 3.5 m) 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 (DivX MPEG-4) MOV (Video: H.264/MPEG-4 AVC, Audio: AAC Stereo)
Included Memory: 21.0 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: Yes Yes
Remote Control Type: IR, optional 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): 240 shots 250 shots
Battery Life, Still (CIPA Rating OVF/EVF):    
Battery Life, Video:   60 minutes
Battery Form Factor: Proprietary D-LI68 Proprietary EN-EL12
Usable Battery Types: Lithium Ion rechargeable Lithium-ion rechargeable
Batteries Included: 1 x Proprietary D-LI68 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: Software (S-SW69) CD-ROM None; Free downloads: Nikon SnapBridge 360/170 app for iOS and Android devices, KeyMission 360/170 Utility program for PC and Mac
OS Compatibility: Windows, Mac OS  
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.