Sony Alpha 7R III vs Pentax MX-1

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      Specifications

      General Sony Alpha 7R III Pentax MX-1
      BrandSonyPentax
      ModelAlpha 7R IIIMX-1
      Predecessor ModelSony Alpha 7R II
      Successor ModelSony Alpha 7R IV
      MSRP$3199 (body only)$499
      Camera TypeInterchangeable LensPoint & Shoot
      Body TypeMirrorlessStandard Compact
      Video Capture
      Sensor Sony Alpha 7R III Pentax MX-1
      Sensor TypeBSI-CMOSCMOS
      Sensor SizeFull Frame1/1.7-inch
      Sensor Dimensions35.9 x 24 mm7.44 x 5.58 mm
      Total Pixels43.6 Megapixel12.76 Megapixel
      Effective Pixels42.4 Megapixel12 Megapixel
      Low Pass Filter
      Native ISO Range100 - 32,000100 - 12,800
      Boosted ISO Range50 - 102,400
      Photo Sony Alpha 7R III Pentax MX-1
      ProcessorBIONZ X
      Max Image Resolution7952 x 53044000 x 3000
      Other Resolutions3984 x 2656, 3968 x 2232, 3072 x 2304, 3072 x 2048, 3072 x 1728, 2592 x 1728, 2560 x 1440, 2048 x 1152
      Image Aspect Ratios3:2, 16:94:3, 3:2, 16:9
      Image File FormatJPEG, RAW
      JPEG Quality LevelsExtra fine, fine, standardFine, Normal
      Bit Depth14-Bit
      Timelapse Recording
      White BalancePresets: Auto, Cloudy, Color Temperature, Custom, Daylight, Flash, Fluorescent (Cool White), Fluorescent (Daylight), Fluorescent (Warm White), Incandescent, Shade, Underwater
      WB Bracketing
      Focus Sony Alpha 7R III Pentax MX-1
      Focusing SystemFast Hybrid AF (Phase-detection / Contrast-detection)
      Autofocus ModesMulti-area
      Center
      Selective single-point
      Tracking
      Single
      Continuous
      Touch
      Face Detection
      Live View      		Tracking
      Single
      Continuous
      Face Detection
      Live View
      Lens ServoAutomatic, Continuous-Servo AF, Direct Manual Focus, Manual Focus, Single-Servo AF
      AF Detection Range-2 to +20 EV
      Number of Focus Points42525
      Number of Cross-type Focus Points0
      Touch-to-Focus
      Live View Autofocus
      Animal Eye Detection
      Vehicle Tracking Mode
      Insect Tracking Mode
      Contrast Detection for Autofocus
      Phase Detection for Autofocus
      Optics Sony Alpha 7R III Pentax MX-1
      Lens MountSony E
      Crop Factor1x
      35mm Equivalent Focal Length Range28 - 112 mm
      Optical Zoom4x
      Maximum Aperturef/1.8 - 2.5
      Min Normal Focus Distance60 cm
      Min Macro Focus Distance1 cm
      Image Stabilization5-Axis Sensor Shift
      Image Stabilization Compensation5.5 stops
      Digital Image Stabilization
      Screen Sony Alpha 7R III Pentax MX-1
      Screen TypeTiltingTilting
      Screen TechnologyTFT LCDTFT LCD with AR coating
      Touch Screen
      Screen Size3.0"3.0"
      Screen Resolution1,440k dot920k dot
      Top LCD Screen
      Live View
      Live Composition
      Viewfinder Sony Alpha 7R III Pentax MX-1
      ViewfinderElectronic
      Viewfinder Size0.5"
      Viewfinder Coverage100%
      Viewfinder Magnification0.78x
      Viewfinder Magnification (35mm equivalent)0.78x
      Viewfinder Resolution3,686k dot
      Viewfinder Eyepoint23 mm
      Diopter Adjustment-4 to +3
      Shutter Sony Alpha 7R III Pentax MX-1
      Shutter TypeElectronic
      Min Shutter Speed30 sec30 sec
      Max Shutter Speed (Mechanical or 1st Curtain)1/8000 sec1/8000 sec
      Max Continuous Shooting10.0 fps1.0 fps
      Continuous Shooting Resolution/fps/bufferUp to 10 fps at 42.4 MP for up to 76 Frames (Raw) / 76 Frames (JPEG)
      Up to 8 fps at 42.4 MP for up to 76 Frames (Raw) / 76 Frames (JPEG)
      Up to 6 fps at 42.4 MP for up to 76 Frames (Raw) / 76 Frames (JPEG)
      Up to 3 fps at 42.4 MP for up to 76 Frames (Raw) / 76 Frames (JPEG)
      Flash Sony Alpha 7R III Pentax MX-1
      Built-in Flash
      Flash ModesOff
      Auto
      Fill-flash
      Slow Sync
      Rear Sync
      Red-eye reduction
      Wireless
      Hi-speed sync      		Auto
      On
      Off
      Red-Eye
      Fill-in
      Slow Speed sync
      Trailing Curtain sync
      Flash Range12.00 m
      Max Flash Sync Speed1/250 sec
      Flash Compensation-3 to +3 EV (1/3, 1/2 EV Steps)
      External Flash Connectivity
      External Flash SystemTTL
      External Flash ConnectionIntelligent Hot Shoe, PC Terminal
      Exposure Sony Alpha 7R III Pentax MX-1
      Exposure Metering ModesMulti
      Center-weighted
      Spot      		Multi
      Center-weighted
      Spot
      Exposure ModesAperture Priority, Auto, Manual, Program, Shutter Priority
      Metering Range-3 to +20 EV
      Exposure Compensation±5 EV (1/3 EV, 1/2 EV increments)±2 (at 1/3 EV increments)
      Exposure Bracketing ±5 EV (3, 5 shots at 1/3 EV, 1/2 EV, 2/3 EV, 1 EV, 2 EV increments) ±2 (3 frames at 1/3 EV increments)
      DXO Sony Alpha 7R III Pentax MX-1
      DxO Low Light ISO3523208
      DxO Color Depth26.020.4
      DxO Dynamic Range14.711.3
      DxO Overall Score10049
      Video Sony Alpha 7R III Pentax MX-1
      Internal Recording ModesXAVC S
      4K UHD: 3840 x 2160 @ 23.98/25/29.97 fps [60 to 100 Mbps]
      Full HD: 1920 x 1080p @ 23.98/25/29.97/50/59.94/100 fps [100 Mbps]
      HD: 1280 x 720 @ 100 fps [50 Mbps]
      AVCHD
      Full HD: 1920 x 1080p @ 23.98/25/50/59.94 fps [17 to 28 Mbps]
      Full HD: 1920 x 1080i @ 50/59.94 fps [17 to 24 Mbps]
      MP4
      Full HD: 1920 x 1080p @ 25/29.97/50/59.94 fps [16 to 28 Mbps]
      HD: 1280 x 720 @ 25/29.97 fps [6 Mbps]
      Video FormatsMPEG-4, AVCHD, XAVC SMPEG-4, H.264
      Max Video Resolution3840 x 21601920 x 1080
      External Recording Modes4:2:2 8-Bit via HDMI
      UHD 4K (3840 x 2160) @ 23.98/24.00/25/29.97 fps
      1920 x 1080p @ 23.98/24.00/50/59.94 fps
      1920 x 1080i @ 50/59.94 fps
      Webcam Functionality
      Gamma CurveHDR-HLG, Sony S-Log 2, Sony S-Log 3
      Unlimited Video Recording
      Recording Limit30 min
      Terminals Sony Alpha 7R III Pentax MX-1
      Audio I/O1 x 1/8" / 3.5 mm TRS Stereo Headphone Output
      1 x 1/8" / 3.5 mm TRS Stereo Microphone Input
      Power I/O1 x USB-C Input/Output
      Other I/O1 x Sony Multi/Micro-USB Input/Output (Shared with Remote Input)
      1 x USB-C (USB 3.2 / 3.1 Gen 1) Input/Output (Shared with Power Input)
      1 x PC Sync Socket Output
      USB SpeedUSB 3.2 Gen 1x1 (5 GBit/sec)USB 2.0 (480 Mbit/sec)
      HDMI Output Micro Type D Mini
      SpeakerMono
      Built-in MicrophoneStereo
      Microphone Input
      Headphone Output
      Flash Sync Port
      Connectivity Sony Alpha 7R III Pentax MX-1
      Built-in GPS
      Built-In Wi-Fi Eye-Fi Connection possible
      Wi-Fi Version802.11b/g/n, 2.4 GHz
      Built-In Bluetooth
      NFC
      Remote Control wired, wireless, smartphone
      Environmental Sony Alpha 7R III Pentax MX-1
      Environmental Sealing
      Operating Temperature32 to 104°F / 0 to 40°C
      Physical Sony Alpha 7R III Pentax MX-1
      Dimensions127 x 96 x 74 mm (5 x 3.78 x 2.91")122 x 61 x 51 mm (4.8 x 2.4 x 2.01")
      Weight (inc. batteries)657 g (1.45 lb / 23.17 oz)391 g (0.86 lb / 13.79 oz)
      Box Dimensions (LxWxH)9.6 x 6.1 x 5.7"7.1 x 5.7 x 4"
      Package Weight3.005 lb
      Power and Storage Sony Alpha 7R III Pentax MX-1
      Battery PackNP-FZ100D-Li-106
      Battery Life650 shots290 shots
      USB Charging
      Internal Storage75.3 MB
      External StorageSlot 1: SD/SDHC/SDXC (UHS-II)
      Slot 2: SD/SDHC/SDXC/Memory Stick Duo Hybrid (UHS-I)      		Single Slot: SD/SDHC/SDXC
      Other Sony Alpha 7R III Pentax MX-1
      Self Timer 2 or 10 sec; continuous 3 or 5 exposuresYes (2 or 12 sec)
      Orientation Sensor
      Tripod Mounting Thread1 x 1/4"-20 Female (Bottom)
      Accessory Mount1 x Hot Shoe Mount
      Material of ConstructionMagnesium Alloy
      Electronic Level Gauge
      Sensor Cleaning/Dust Reduction System


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