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Nikon D850 vs PENTAX K-1 Mark II

Every spec side by side, from each maker's published figures.

Better figure, where one is clearly better

NikonD850PENTAXK-1 Mark II
Overview
ReleasedSeptember 2017April 2018
Image and sensor
Camera typeDSLRDSLR
Sensor formatFull frameFull frame
Sensor typeBackside-illuminated CMOSCMOS without an optical low-pass filter
Sensor dimensions35.9 × 23.9 mm35.9 × 24 mm
Effective resolution45.7 MP36.4 MP
Largest image8256 × 55047360 × 4912
RAW recordingYesYes
Standard ISO range64–25600100–819200
Sensor detail46.89 million total pixels; no optical low-pass filter; sensor cleaning and image-dust-off reference data. UK effective resolution rounded to 45.7 MP; Japan specifies 45.75 million, distinct from the 45.44-million-pixel largest file.36.4 effective megapixels, 36.77 total; no optical low-pass filter. Sensor-shift anti-aliasing simulator offers moiré reduction
Image formats12/14-bit NEF RAW with lossless compression, compression or no compression; medium/small RAW fixed at 12-bit lossless; JPEG, RGB TIFF and RAW plus JPEG14-bit PEF or DNG RAW, JPEG and simultaneous RAW/JPEG; full-frame and APS-C crop. Tripod pixel shift combines four sensor-shifted exposures; Dynamic handheld mode aligns four shots without eliminating Bayer interpolation
ISO detailExpandable to equivalent ISO 32–102400; Auto ISO availableMaker standard sensitivity ISO 100–819200; no separate expanded range listed
Image processorEXPEED 5PRIME IV with an accelerator unit
Lens and shooting
Lens mountNikon F mountPENTAX KAF2 bayonet mount
StabilisationOptical lens stabilisationSensor shift
Maximum continuous burst9 fps6.4 fps
Lens detailCompatible F-mount lenses include G/E/D, other supported AF, P and AI non-CPU lenses with restrictions; DX lenses use a cropped image area. Non-AI, IX and F3AF lenses unsupported.KAF4, KAF3, KAF2 including power zoom, KAF and KA lenses; native KAF2 bayonet with autofocus coupler, information and power contacts
AutofocusViewfinder Multi-CAM 20K phase detection with 153 points, 99 cross-type and 55 user-selectable; 15 support f/8. Live view uses contrast detection with face, wide, normal, pinpoint and tracking modes. Review references to a Multi-CAM 3500 module are incorrect.SAFOX 12 phase detection through viewfinder, 33 points including 25 central cross-type points, EV −3 to 18 at ISO 100; contrast detection in live view
Shutter1/8000 to 30 seconds, Bulb and Time; mechanical focal-plane and electronic front-curtain options; flash sync 1/250 second with compatible Auto FP support; electronic silent live-view modesMechanical focal-plane shutter 1/8000–30 seconds, Bulb and optional timed Bulb 10 seconds–20 minutes; electronic shutter available in live view and tripod pixel shift
Burst detailMain 9 fps requires optional MB-D18 grip, EN-EL18b battery and BL-5 cover; body with EN-EL15-series battery reaches 7 fps. Full-resolution silent Mode 1 reaches 6 fps. Brief silent Mode 2 reaches 30 fps for at most three seconds with fixed focus/exposure and 3600 × 2400 DX JPEG Normal files; this restricted mode is not the headline continuous rate.Maximum 4.4 fps at full-frame resolution with up to 70 JPEGs or 17 RAW files; 6.4 fps in 15-megapixel APS-C crop with up to 100 JPEGs or 50 RAW files, at ISO 100
Stabilisation detailNo sensor-shift stabilisation; optical VR depends on the attached lens. Electronic movie vibration reduction available with mode restrictions.Five-axis sensor-shift SR II; maker claims five shutter-speed steps. Built-in GPS supports Astrotracer; horizon and composition adjustment use the sensor-shift mechanism
FlashNo built-in flash; ISO 518 hot shoe, ISO 519 sync terminal and compatible external i-TTL SpeedlightsHot shoe and X-sync socket for external flash, sync 1/200 second
Exposure controlsP/S/A/M; ±5 EV compensation; 180K-pixel RGB metering sensor, unlike Photography Blog's erroneous 91K-pixel narrativePASM, sensitivity priority and combined shutter/aperture priority; ±5 EV exposure compensation and 86,000-pixel RGB metering sensor
Video
Highest video resolution3840 × 2160 at 29.97 fps1920 × 1080 at 30 fps
Video detailFull-width FX or DX UHD 3840 × 2160 at 29.97/25/23.976p; Full HD up to 59.94p and cropped silent slow-motion capture at 100/119.88 fps played at 25/29.97/23.976p. H.264 MOV/MP4; recording limit 29 minutes 59 seconds. In-camera 4K time-lapse; 8K time-lapse requires still-frame assembly in external software.Full HD 1920×1080 at 30/25/24 progressive frames or 60i/50i fields; 1280×720 at 60/50p. H.264 MOV, up to 25 minutes or 4 GB. 4K is interval-movie output only, not continuous video
AudioBuilt-in stereo microphones, external 3.5 mm microphone input and headphone monitoring; PCM or AAC depending on file format; slow motion has no audioBuilt-in stereo microphone, external stereo mic input and headphone monitoring; adjustable recording level and wind-noise reduction
Screen and viewfinder
ViewfinderOpticalOptical
Screen size3.2″3.2″
Screen dots2,359,0001,037,000
TouchscreenYesNo
Tilting screenYesYes
Display detailTilting TFT, approximately 100% coverage and 170° viewing angle; maker US announcement specifies 2359K dots, Japan rounds to approximately 2.36 million; dots count subpixels3.2-inch flexible-tilt LCD, approximately 1.037 million dots; outdoor-view and red night-vision settings. No touchscreen, as DPReview confirms
Viewfinder detailPentaprism, approximately 100% FX coverage, 0.75× magnification with 50mm f/1.4 at infinity, 17 mm eyepoint and −3 to +1 dioptre adjustmentOptical pentaprism, approximately 100% coverage and 0.70× magnification with FA 50mm F1.4 focused at infinity; eye relief 20.6 mm from view window
Connections and design
Wi-FiYesYes
BluetoothYes–
Battery life (maker's claim)1840 photographs670 photographs
Body weight915 g925 g
Release detailAnnounced on 24 August 2017 after a July development announcement; Nikon US states September availability and Nikon Japan specified 8 September. Main retains September because the exact first UK retail day is unconfirmed.Pentax Europe's current product table confirms April 2018 market launch; original Japanese launch notice stated late April. Earliest worldwide retail day unconfirmed, so month precision retained. Later Ricoh notice announces ending current K-series production; surviving range pages do not prove ongoing production
Recording mediaCurrent maker specification supports CFexpress Type B/XQD plus UHS-II SD/SDHC/SDXC; overflow, backup, RAW/JPEG separation and card copying. Launch specification had XQD plus SD.Two UHS-I SD/SDHC/SDXC slots; sequential, duplicate or separate RAW/JPEG recording
PortsUSB 3.0 Micro-B, mini HDMI Type C, 3.5 mm microphone and headphone sockets, 10-pin remote terminal and flash-sync socket; Ethernet requires the optional WT-7 transmitterMicro-B USB 2.0, Type D micro-HDMI, microphone and headphone sockets, external power, cable switch and X-sync terminals
Wireless connectionsWi-Fi IEEE 802.11b/g and Bluetooth 4.1; SnapBridgeIEEE 802.11b/g/n Wi-Fi at 2.4 GHz; built-in GPS, QZSS/SBAS reception and electronic compass
Battery life detailEN-EL15a/15b; maker CIPA claim approximately 1840 shots using the camera's own EN-EL15-series battery, not requiring the D5 battery as UK marketing prose could suggest. EN-EL15c may be supplied. Optional MB-D18 supports EN-EL18b, EN-EL15-series or eight AA cells.D-LI90P rechargeable lithium-ion battery; approximately 670 shots under CIPA conditions, or 340 minutes playback
ChargingExternal MH-25a charger; optional EH-5c/EH-5b AC adapter and EP-5B power connectorIncluded D-BC90 external battery charger; optional K-AC167 AC adapter kit
DimensionsApproximately 146 × 124 × 78.5 mmApproximately 136.5 × 110 × 85.5 mm, excluding protrusions
Weight detailApproximately 915 g body only or 1005 g including battery and XQD card, excluding body capApproximately 925 g body only; 1010 g including battery and SD card
MaterialsWeather-sealed construction; maker operating range 0–40°CMagnesium-alloy exterior and maker −10°C operating limit; weather resistance is not a waterproof rating
Colours–Standard black body; limited cosmetic editions not separate generations
In the boxEN-EL15-series battery, MH-25a charger, HDMI/USB cable clip, UC-E22 USB cable, AN-DC18 strap, BF-1B body cap and DK-17F eyepiece; battery revision may varyD-LI90P battery, D-BC90 charger and AC cord, strap, viewfinder cap, eyecup, body cap, hot-shoe and connector covers, strap rings and Digital Camera Utility 5 CD-ROM

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