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Nikon D810A vs Nikon D850

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

Better figure, where one is clearly better

NikonD810ANikonD850
Overview
ReleasedMay 2015September 2017
Image and sensor
Camera typeDSLRDSLR
Sensor formatFull frameFull frame
Sensor typeCMOSBackside-illuminated CMOS
Sensor dimensions35.9 × 24 mm35.9 × 23.9 mm
Effective resolution36.3 MP45.7 MP
Largest image7360 × 49128256 × 5504
RAW recordingYesYes
Standard ISO range200–1280064–25600
Sensor detailFX CMOS with 36.3 million effective pixels USA/global or 36.35 million Japan, 37.09 million total; no optical low-pass filter. Modified IR-cut filter transmits four times more H-alpha light than D810. Nikon warns of red casts under near-infrared-rich lighting or with reflective subjects and does not recommend general photography. Image Sensor Cleaning and Image Dust Off; FX 7360 × 4912, 1.2× crop 6144 × 4080, DX 4800 × 3200 and 5:4 crop 6144 × 491246.89 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.
Image formats12-bit or 14-bit NEF RAW, uncompressed, lossless-compressed or compressed; Small RAW fixed at 12-bit uncompressed. TIFF RGB, JPEG Fine/Normal/Basic with size-priority or optimal-quality compression, simultaneous RAW/JPEG; Flat and adjustable/custom Picture Controls12/14-bit NEF RAW with lossless compression, compression or no compression; medium/small RAW fixed at 12-bit lossless; JPEG, RGB TIFF and RAW plus JPEG
ISO detailStandard ISO 200–12800 in one-third, half or whole stops; Lo expansion to ISO 100 equivalent and Hi expansion to ISO 51200 equivalent; automatic sensitivity controlExpandable to equivalent ISO 32–102400; Auto ISO available
Image processorEXPEED 4EXPEED 5
Lens and shooting
Lens mountNikon F mountNikon F mount
StabilisationOptical lens stabilisationOptical lens stabilisation
Maximum continuous burst5 fps9 fps
Lens detailF mount with body AF coupling and contacts; G/E/D, other AF and AI-P lenses with restrictions; non-CPU AI lenses usable in A/M/M* with registered lens data, DX lenses use DX crop. Non-AI, IX and F3AF lenses excluded; USA G/H notation conflicts with Japan A/M/M*Compatible 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.
AutofocusAdvanced Multi-CAM3500FX phase detection with 51 points, 15 cross-type and 11 f/8-compatible points; -2 to +19 EV at ISO 100 equivalent, 20°C. AF-S/AF-C, fine-tuning, single-point, dynamic nine/21/51, 3D tracking, group-area and auto-area. Live view uses contrast AF-S/AF-F and face/wide/normal/tracking areas; current USA detection-range -1 EV entry conflicts with its own -2 EV sensitivity entry and Japan, while AF-A listings conflict with Japan modesViewfinder 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.
ShutterElectronically controlled vertical-travel focal-plane shutter, 1/8000 to 30 seconds, Bulb and Time; electronic front curtain in mirror-up mode. M* adds 4/5/8/10/15/20/30/60/120/180/240/300/600/900-second presets. X-sync 1/250 second, up to 1/320 with reduced flash range1/8000 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 modes
Burst detailApproximately 5 fps full FX or 5:4 and 6 fps DX or 1.2× crop on EN-EL15. DX reaches 7 fps with MB-D12 using batteries other than EN-EL15, or qualifying AC power; 1.2× remains 6 fps. Quiet continuous approximately 3 fps. M* continuous shooting at exposures of 4 seconds or longer removes the 100-shot limit, subject to battery/card capacityMain 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.
Stabilisation detailVR depends on attached lens; no sensor-shift stabilisationNo sensor-shift stabilisation; optical VR depends on the attached lens. Electronic movie vibration reduction available with mode restrictions.
FlashBuilt-in i-TTL pop-up flash, guide number approximately 12 m at ISO 100, 20°C; commander mode, hot shoe, PC sync terminal and compatible Auto FP SpeedlightsNo built-in flash; ISO 518 hot shoe, ISO 519 sync terminal and compatible external i-TTL Speedlights
Exposure controlsP/S/A/M and long-exposure M*; 91000-pixel RGB matrix, centre-weighted, spot and highlight-weighted metering; ±5 EV compensation and exposure/flash/white-balance bracketing; HDR, interval timer and virtual horizon. Japan centre-weighted default 12 mm and spot range 2–20 EV differ from USA 8 mm and 0–20 EVP/S/A/M; ±5 EV compensation; 180K-pixel RGB metering sensor, unlike Photography Blog's erroneous 91K-pixel narrative
Video
Highest video resolution1920 × 1080 at 60 fps3840 × 2160 at 29.97 fps
Video detailFX- or DX-based 1920 × 1080 at 60p/50p/30p/25p/24p and 1280 × 720 at 60p/50p; MOV H.264/MPEG-4 AVC with linear PCM. Full HD 60p/50p limit 10 minutes high quality or 20 normal; other modes 20 minutes high or 29 min 59 s normal. Time-lapse movies; current USA general 20-minute limit omits mode/quality differencesFull-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.
AudioBuilt-in stereo microphone; external 3.5 mm stereo input and headphone output, adjustable microphone sensitivityBuilt-in stereo microphones, external 3.5 mm microphone input and headphone monitoring; PCM or AAC depending on file format; slow motion has no audio
Screen and viewfinder
ViewfinderOpticalOptical
Screen size3.2″3.2″
Screen dots1,229,0002,359,000
TouchscreenNoYes
Tilting screenNoYes
Display detailFixed 3.2-inch TFT, approximately 1229000 dots, 170° viewing angle and approximately 100% coverage; brightness adjustment and top status LCD. Exposure preview simulates 30 seconds for longer exposures, with up to 23× live-view enlargement; viewfinder virtual horizon illuminated redTilting TFT, approximately 100% coverage and 170° viewing angle; maker US announcement specifies 2359K dots, Japan rounds to approximately 2.36 million; dots count subpixels
Viewfinder detailPentaprism; approximately 100% FX coverage, 97% DX/1.2× and 100% vertical/97% horizontal 5:4. Approximately 0.7× magnification with 50mm f/1.4 at infinity, 17 mm eyepoint, grid and depth-of-field previewPentaprism, approximately 100% FX coverage, 0.75× magnification with 50mm f/1.4 at infinity, 17 mm eyepoint and −3 to +1 dioptre adjustment
Connections and design
Wi-Fi–Yes
Bluetooth–Yes
Battery life (maker's claim)1200 photographs1840 photographs
Body weight880 g915 g
Release detailMay 2015 release month; Nikon Japan records actual sale on 28 May, with global announcement dated 10 February. The regional day does not establish earliest worldwide saleAnnounced 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.
Recording mediaOne Type I CompactFlash slot with UDMA and one SD/SDHC/SDXC slot with UHS-I; overflow, backup, RAW/JPEG split and copying between cardsCurrent 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.
PortsUSB 3.0 Micro-B, mini HDMI Type C, 3.5 mm microphone and headphone sockets, PC sync and 10-pin remote/GPS terminal; wired LAN requires optional UT-1USB 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 transmitter
Wireless connectionsNo built-in Wi-Fi or GPS; optional WT-5 with UT-1, GP-1/GP-1A GPS, WR-R10 with WR-A10 or WR-1. Japan marks WR-1 unsupported in M* modeWi-Fi IEEE 802.11b/g and Bluetooth 4.1; SnapBridge
Battery life detailEN-EL15, approximately 1200 CIPA shots. Original global announcement separately claims up to 3860 without built-in flash or immediate playback, and up to 10660 using body EN-EL15 plus grip EN-EL18a under those conditions; these are distinct from CIPA. Optional MB-D12 takes EN-EL15, EN-EL18/EN-EL18a with BL-5 or eight AA cellsEN-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.
ChargingExternal MH-25a charger; optional EH-5b AC adapter with EP-5B connectorExternal MH-25a charger; optional EH-5c/EH-5b AC adapter and EP-5B power connector
DimensionsApproximately 146 × 123 × 81.5 mmApproximately 146 × 124 × 78.5 mm
Weight detailApproximately 880 g body only; 980 g with battery and SD card, excluding body capApproximately 915 g body only or 1005 g including battery and XQD card, excluding body cap
MaterialsDust- and water-resistant sealing; magnesium-alloy body documented on Nikon USA refurbished product overviewWeather-sealed construction; maker operating range 0–40°C
ColoursBlack–
In the boxEN-EL15, MH-25a, UC-E22 USB cable, AN-DC16 strap, BF-1B body cap, DK-17 eyepiece, USB/HDMI cable clips and BM-12 monitor cover (Japan package)EN-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 vary

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