Nikon D850 vs Pentax K-x

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      Specifications

      General Nikon D850 Pentax K-x
      BrandNikonPentax
      ModelD850K-x
      Predecessor ModelNikon D810 Pentax K-m
      MSRP$3299
      Camera TypeInterchangeable LensInterchangeable Lens
      Body TypeDSLRDSLR
      Video Capture
      Sensor Nikon D850 Pentax K-x
      Sensor TypeBSI-CMOSCMOS
      Sensor FormatFX
      Sensor SizeFull FrameAPS-C
      Sensor Dimensions35.9 x 23.9 mm23.4 x 15.6 mm
      Total Pixels46.89 Megapixel12.97 Megapixel
      Effective Pixels45.7 Megapixel12.6 Megapixel
      Low Pass Filter
      Native ISO Range64 - 25,600100 - 6,400
      Boosted ISO Range32 - 102,400100 - 12,800
      Photo Nikon D850 Pentax K-x
      ProcessorEXPEED 5PRIME
      Max Image Resolution8256 x 55044288 x 2848
      Other Resolutions3936 x 2684, 3072 x 2048, 1728 x 1152
      Image Aspect Ratios1:1, 5:4, 3:2, 16:93:2
      Image File FormatJPEG, RAW, TIFF
      JPEG Quality LevelsFine, normal, basicBest, Better, Good
      Bit Depth14-Bit12-Bit
      Timelapse Recording
      White BalancePresets: Auto, Cloudy, Color Temperature, Direct Sunlight, Fine, Flash, Fluorescent, Fluorescent (White), Incandescent, Neutral White, Preset Manual, ShadeAuto preset modes: Auto, Daylight, Shade, Cloudy, Fluorescent (D, N, W, L), Tungsten, Flash, CTE
      WB Bracketing2 to 9 exposures in increments of 1, 2 or 3 EV
      Active D-LightingCan be selected from:
      Auto
      Extra High
      High
      Normal
      Low
      Off
      Focus Nikon D850 Pentax K-x
      Autofocus ModesMulti-area
      Center
      Selective single-point
      Tracking
      Single
      Continuous
      Touch
      Face Detection
      Live View      		Multi-area
      Selective single-point
      Single
      Continuous
      Face Detection
      Live View
      Lens ServoAutomatic, Continuous-Servo AF, Manual Focus, Single-Servo AF
      AF Detection Range-4 to +20 EV
      Number of Focus Points15311
      Number of Cross-type Focus Points99
      Touch-to-Focus
      Live View Autofocus
      Animal Eye Detection
      Vehicle Tracking Mode
      Insect Tracking Mode
      Contrast Detection for Autofocus
      Phase Detection for Autofocus
      Focusing ScreenType B BriteView Clear Matte Mark VIII with AF Area Brackets (grid lines can be displayed)Natural-Bright-Matte III
      Optics Nikon D850 Pentax K-x
      Lens MountNikon FPentax KAF2
      Crop Factor1x1.5x
      Image StabilizationSensor Shift
      Digital Image Stabilization
      Reflex MirrorQuick-return type
      Screen Nikon D850 Pentax K-x
      Screen TypeTiltingFixed
      Screen TechnologyTFT LCDTFT LCD
      Touch Screen
      Screen Size3.2"2.7"
      Screen Resolution2,359k dot230k dot
      Top LCD Screen
      Live View
      Live Composition
      Viewfinder Nikon D850 Pentax K-x
      ViewfinderOptical (pentaprism)Optical (pentamirror)
      Viewfinder Coverage100%96%
      Viewfinder Magnification0.75x0.85x
      Viewfinder Magnification (35mm equivalent)0.75x0.57x
      Viewfinder Eyepoint17 mm
      Diopter Adjustment-3 to +1-2.5 to +1.5
      Shutter Nikon D850 Pentax K-x
      Shutter TypeElectronic, Mechanical Focal PlaneElectronically controlled Vertical Run Focal Plane
      Min Shutter Speed30 sec30 sec
      Max Shutter Speed (Mechanical or 1st Curtain)1/8000 sec1/6000 sec
      Max Continuous Shooting7.0 fps4.7 fps
      Mirror Lock Up
      Continuous Shooting Resolution/fps/bufferUp to 7 fps at 45.7 MP for up to 51 Frames (Raw)
      Flash Nikon D850 Pentax K-x
      Built-in Flash
      Flash ModesFront-curtain sync (normal)
      Rear-curtain sync
      Red-eye reduction
      Red-eye reduction with slow sync
      Slow sync      		Auto
      On
      Off
      Red-Eye
      Slow Sync
      Rear curtain
      Wireless
      Flash Range16.00 m
      Max Flash Sync Speed1/250 sec1/180 sec
      Flash Compensation-3 to +1 EV (1/3, 1/2, 1 EV Steps)
      Flash Bracketing2 to 9 frames in steps of 1/3, 1/2, 2/3, or 1 EV
      External Flash Connectivity
      External Flash SystemTTL: i-TTL flash control using RGB sensor with approximately 180K (180,000) pixels; i-TTL balanced fill-flash for digital SLR is used with matrix, center-weighted, and highlight-weighted metering, standard i-TTL fill-flash for digital SLR with spot meteringP-TTL, high speed sync, wireless w PENTAX dedicated flash
      External Flash ConnectionHot Shoe, PC TerminalHot shoe
      Exposure Nikon D850 Pentax K-x
      Exposure Metering ModesMulti
      Center-weighted
      Highlight-weighted
      Spot      		Multi
      Center-weighted
      Spot
      Exposure ModesAperture Priority, Manual, Program, Shutter PriorityProgram, Sensitivity Priority, Shutter Priority, Aperture Priority, Metered Manual, Bulb (available in Metered Manual)
      Metering Range-3 to +20 EV
      Exposure Compensation±5 EV (1/3 EV, 1/2 EV, 1 EV increments)±3 EV (1/3 EV, 1/2 EV increments)
      Exposure Bracketing ±5 EV (2, 3, 5, 7 shots at 1/3 EV, 1/2 EV, 2/3 EV, 1 EV increments) ±1.5 (3 shots at 1/3 EV, 1/2 EV increments)
      Exposure Lock (available via programmable AF/AE-L button)
      DXO Nikon D850 Pentax K-x
      DxO Low Light ISO2660811
      DxO Color Depth26.422.8
      DxO Dynamic Range14.812.5
      DxO Overall Score10072
      Video Nikon D850 Pentax K-x
      Movie File FormatMOV
      MP4
      Internal Recording ModesH.264/MOV/MP4
      4K UHD: 3840 x 2160 @ 23.98/25/29.97 fps
      Full HD: 1920 x 1080p @ 23.98/25/29.97/50/59.94 fps
      HD: 1280 x 720 @ 50/59.94 fps      		Yes
      Interval Recording
      Video FormatsMPEG-4Motion JPEG
      Max Video Resolution3840 x 21601280 x 720
      External Recording Modes4:2:2 8-Bit via HDMI
      UHD 4K (3840 x 2160) @ 24.00/25/29.97 fps
      1920 x 1080p @ 24.00/25/29.97/50/59.94 fps
      1280 x 720 @ 50/59.94 fps
      No crop on 4K Videos
      Unlimited Video Recording
      Recording Limit30 min - 60 fps or less
      3 min - 120/100 fps      		25 min
      Terminals Nikon D850 Pentax K-x
      Audio I/O1 x 1/8" / 3.5 mm TRS Stereo Headphone Output
      1 x 1/8" / 3.5 mm TRS Stereo Microphone Input
      Other I/O1 x Micro-USB (USB 3.2 / 3.1 Gen 1) Output
      1 x Nikon 10-Pin Input
      1 x PC Sync Socket Output
      USB SpeedUSB 3.2 Gen 1x1 (5 GBit/sec)USB 2.0 (480 Mbit/sec)
      HDMI Output Mini
      SpeakerMono
      Built-in MicrophoneStereoMono
      Microphone Input
      Headphone Output
      Flash Sync Port
      Connectivity Nikon D850 Pentax K-x
      Built-in GPS
      Built-In Wi-Fi
      Wi-Fi Version802.11b/g, 2.4 GHz
      Built-In Bluetooth
      Bluetooth Version4.1 LE
      NFC
      Mobile App Compatible *As of May, 2023: Check with manufacturer for the most up-to-date compatibility
      Remote Control wired, wireless, smartphone Optional, wired or wireless
      Environmental Nikon D850 Pentax K-x
      Environmental Sealing
      Operating Temperature32 to 104°F / 0 to 40°C32-104°F
      Operating Humidity0 to 85%
      Physical Nikon D850 Pentax K-x
      Dimensions146 x 124 x 79 mm (5.75 x 4.88 x 3.11")123 x 92 x 68 mm (4.84 x 3.62 x 2.68")
      Weight (inc. batteries)1005 g (2.22 lb / 35.45 oz)580 g (1.28 lb / 20.46 oz)
      Box Dimensions (LxWxH)10.2 x 6.4 x 5.7"
      Package Weight4.265 lb
      Power and Storage Nikon D850 Pentax K-x
      Battery PackEN-EL15a4 x AA
      Battery Life1840 shots1900 shots
      USB Charging
      Internal Storage
      External StorageSlot 1: SD/SDHC/SDXC (UHS-II)
      Slot 2: CFexpress Type B / XQD      		Single Slot: SD/SDHC
      Other Nikon D850 Pentax K-x
      Self Timer 2, 5, 10, 20 secs 2 or 12 sec
      Orientation Sensor
      Tripod Mounting Thread1 x 1/4"-20 Female (Bottom)
      Accessory Mount1 x Hot Shoe Mount
      Material of ConstructionMagnesium AlloyFiber reinforced plastic polymer covers around a rugged stainless steel chassis
      Illuminated Buttons
      Virtual Horizon Camera Indicator
      Also visible in LiveView Modes
      Also visible in Viewfinder
      Sensor Cleaning/Dust Reduction SystemImage sensor cleaning
      Image Dust Off reference data (optional Capture NX-D software required)


      For a full review please go to the review page:

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