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 1-on-1 Comparison
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GENERAL
Model Pentax K-1 Nikon D850 Sony Alpha A99 II
Release Date 2016-02-17 2017-08-24 2016-09-19
Camera Type Mid-size SLR Mid-size SLR Mid-size SLR
Current Price $1,700.00 $3,296.95 $3,198.00
SENSOR COMPARISON
Sensor Resolution
36

Megapixel

46

Megapixel

42

Megapixel

Max Image Dimensions 7360 x 4912 8256 x 5504 7952 x 5304
Sensor Type CMOS BSI-CMOS BSI-CMOS
Sensor Size Full frame Full frame Full frame
Sensor Dimensions 35.9 x 24 mm 35.9 x 23.9 mm 35.9 x 24 mm
Sensor Area
861mm2
858mm2
861mm2
Max ISO

204800

25600

25600

Min ISO

100

64

100

RAW Support
SHOOTING FEATURES COMPARISON
Model Pentax K-1 Nikon D850 Sony Alpha A99 II
Max Shutter Speed 1/8000 sec 1/8000 sec 1/8000 sec
Min Shutter Speed 30 sec 30 sec 30 sec
Continuous Shooting 4.4 fps 7.0 fps 12.0 fps
Shutter Priority
Aperture Priority
Manual Exposure
Exposure Compensation ±5 (at 1/3 EV, 1/2 EV steps) 5 (at 1/3 EV, 1/2 EV, 1 EV steps) ±5 (at 1/3 EV, 1/2 EV steps)
Exposure Metering
  • MultiCenter-weightedSpot
  • MultiCenter-weightedHighlight-weightedSpot
  • MultiCenter-weightedHighlight-weightedSpot
Auto Exposure Bracketing ±5 (2, 3, 5 frames at 1/3 EV, 1/2 EV steps) 5 (2, 3, 5, 7 frames at 1/3 EV, 1/2 EV, 2/3 EV, 1 EV steps) ±5 (3, 5 frames at 1/3 EV, 1/2 EV, 2/3 EV, 1 EV, 2 EV steps)
Custom White Balance
Image Stabilizer Sensor-shift No Sensor-shift
Built-in Flash
Flash Range no built-in flash no built-in flash no built-in flash
Max Flash Sync no built-in flash no built-in flash 1/250s
Flash Modes Auto Flash Discharge, Auto Flash + Red-eye Reduction, Flash On, Flash On + Red-eye Reduction, Slow-speed Sync, Slow-speed Sync + Red-eye, P-TTL, Trailing Curtain Sync, Contrast-control-sync, High-speed sync, Wireless sync Front-curtain sync (normal), Rear-curtain sync, Red-eye reduction, Red-eye reduction with slow sync, Slow sync Off, auto, fill, slow sync, redeye reduction, rear sync, high-speed sync, wireless
External Flash
AE Bracketing
WB Bracketing
VIEWFINDER COMPARISON
Viewfinder Type Optical (pentaprism) Optical (pentaprism) Electronic
Viewfinder Resolution no electronic viewfinder no electronic viewfinder 2,359k dots
Viewfinder Coverage 100% 100% 100%
Viewfinder Magnification 0.7 0.75 0.78
LCD DISPLAY COMPARISON
Display Type Fully Articulated Tilting Fully articulated
Technology n/a n/a n/a
Screen Size
3.2″
3.2″
3″
Resolution 1,037k dots 2,359k dots 1,229k dots
Live View
Touch Screen
VIDEO COMPARISON
Model Pentax K-1 Nikon D850 Sony Alpha A99 II
Video Resolution 1920 x 1080 (60i, 50i, 30p, 25p, 24p), 1280 x 720 (60p, 50p) 3840 x 2160 @ 30p, MOV, H.264, Linear PCM n/a
Video File Format
  • MPEG-4
  • H.264
  • MPEG-4
  • MPEG-4
  • AVCHD
  • XAVC S
Microphone Type Stereo Yes Yes
Speaker Type Mono Mono Mono
External Microphone Port
External Headphone Port
PHYSICAL SPECS COMPARISON
Weight 1010 g 1015 g 849 g
Dimensions 137 x 110 x 86 mm 146 x 124 x 79 mm 143 x 104 x 76 mm
Body Sealing Yes Yes Yes
BATTERY and STORAGE
Battery Type Battery Pack Battery Pack NP-FM500H lithium-ion battery & charger
Battery Life

760 Shots

1840 Shots

490 Shots

Storage Media Dual SD/SDHC/SDXC (UHS-I) SD/SDHC/SDXC (UHS-II supported) + XQD Dual SD/SDHC/SDXC/MS Duo slots
CONNECTIVITY COMPARISON
Wireless Connectivity Built-In Built-In Built-In
HDMI
USB USB 2.0 (480 Mbit/sec) USB 3.0 (5 GBit/sec) USB 2.0 (480 Mbit/sec)
LENS COMPARISON
Model Pentax K-1 Nikon D850 Sony Alpha A99 II
Lens Mount Pentax KAF2 Nikon F Sony/Minolta Alpha
Focal Range(35mm) No Lens No Lens No Lens
Focal Length Multiplier 1x 1x
Optical Zoom No Lens No Lens No Lens
Max Aperture No Lens No Lens No Lens
Macro Focus Range No Lens No Lens No Lens
Manual Focus
AUTOFOCUS COMPARISON
Number of Focus Points 33 153 399
Contrast Detection
Phase Detection
AF Modes
  • AF Continuous
  • AF Single
  • AF Tracking
  • AF Selective
  • AF Center
  • AF Multi Area
  • AF Live View
  • Face Detection
  • AF Touch
  • AF Continuous
  • AF Single
  • AF Tracking
  • AF Selective
  • AF Center
  • AF Multi Area
  • AF Live View
  • Face Detection
  • AF Continuous
  • AF Single
  • AF Tracking
  • AF Selective
  • AF Center
  • AF Multi Area
  • AF Live View
  • Face Detection
Current Price $1,700.00 $3,296.95 $3,198.00