Sony Alpha 7R IIIA vs Sony Alpha 5100

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      Specifications

      General Sony Alpha 7R IIIA Sony Alpha 5100
      BrandSonySony
      ModelAlpha 7R IIIAAlpha 5100
      Predecessor ModelSony Alpha 7R II Sony Alpha 5000
      Successor ModelSony Alpha 7R IV
      MSRP$3199 (body only)$549 (body only), $699 (with 16-50 PZ lens)
      Camera TypeInterchangeable LensInterchangeable Lens
      Body TypeMirrorlessMirrorless
      Video Capture
      Sensor Sony Alpha 7R IIIA Sony Alpha 5100
      Sensor TypeBSI-CMOSCMOS
      Sensor SizeFull FrameAPS-C
      Sensor Dimensions35.9 x 24 mm23.5 x 15.6 mm
      Total Pixels43.6 Megapixel24.7 Megapixel
      Effective Pixels42.4 Megapixel24.3 Megapixel
      Low Pass Filter
      Native ISO Range100 - 32,000100 - 25,600
      Boosted ISO Range50 - 102,400
      Photo Sony Alpha 7R IIIA Sony Alpha 5100
      ProcessorBIONZ XBIONZ X
      Max Image Resolution7952 x 53046000 x 4000
      Other Resolutions6000 x 3376, 4240 x 2832, 4240 x 2400, 3008 x 2000, 3008 x 1688
      Image Aspect Ratios3:2, 16:93:2, 16:9
      Image File FormatJPEG, RAWJPEG, RAW
      JPEG Quality LevelsExtra fine, fine, standardExtra fine, fine, normal
      Bit Depth14-Bit14-Bit
      Color SpacesRGB (with sYCC gamut), Adobe RGB compatible with TRILUMINOSTM Color
      Timelapse RecordingWith downloadable app
      White BalancePresets: Auto, Cloudy, Color Temperature, Custom, Daylight, Flash, Fluorescent (Cool White), Fluorescent (Daylight), Fluorescent (Warm White), Incandescent, Shade, Underwater
      WB Bracketing3 frames, high/low settings
      Focus Sony Alpha 7R IIIA Sony Alpha 5100
      Focusing SystemFast Hybrid AF (Phase-detection / Contrast-detection)Fast Hybrid AF (Phase-detection / Contrast-detection)
      Autofocus ModesMulti-area
      Center
      Selective single-point
      Tracking
      Single
      Continuous
      Touch
      Face Detection
      Live View      		Multi-area
      Center
      Selective single-point
      Tracking
      Single
      Continuous
      Touch
      Face Detection
      Live View
      Lens ServoAutomatic, Continuous-Servo AF, Direct Manual Focus, Manual Focus, Single-Servo AFAutomatic, Continuous-Servo AF, Direct Manual Focus, Manual Focus, Single-Servo AF
      AF Detection Range-2 to +20 EV-1 to +20 EV
      Number of Focus Points425179
      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 IIIA Sony Alpha 5100
      Lens MountSony ESony E
      Crop Factor1x1.5x
      Image Stabilization5-Axis Sensor Shift
      Image Stabilization Compensation5.5 stops
      Digital Image Stabilization
      Screen Sony Alpha 7R IIIA Sony Alpha 5100
      Screen TypeTiltingTilting
      Screen TechnologyTFT LCDTFT LCD
      Touch Screen
      Screen Size3.0"3.0"
      Screen Resolution2,360k dot922k dot
      Top LCD Screen
      Live View
      Live Composition
      Viewfinder Sony Alpha 7R IIIA Sony Alpha 5100
      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 IIIA Sony Alpha 5100
      Shutter TypeElectronicElectronically controlled Vertical-traverse Focal-plane
      Min Shutter Speed30 sec30 sec
      Max Shutter Speed (Mechanical or 1st Curtain)1/8000 sec1/4000 sec
      Max Continuous Shooting10.0 fps6.0 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 IIIA Sony Alpha 5100
      Built-in Flash
      Flash ModesOff
      Auto
      Fill-flash
      Slow Sync
      Rear Sync
      Red-eye reduction
      Wireless
      Hi-speed sync      		Flash off
      auto
      fill-flaw
      slow sync
      redeye reduction
      Flash Range4.00 m at ISO 100
      Max Flash Sync Speed1/250 sec1/160 sec
      Flash Compensation-3 to +3 EV (1/3, 1/2 EV Steps)-2 to +2 EV (1/3 EV Steps)
      Flash Bracketing1/3, 1/2, 2/3, 1.0, 2.0, 3.0 EV steps, 3/5 frames (1.0/2.0/3.0 EV : only 3 frames) selectable
      External Flash Connectivity
      External Flash SystemTTLTTL
      External Flash ConnectionIntelligent Hot Shoe, PC Terminal
      Exposure Sony Alpha 7R IIIA Sony Alpha 5100
      Exposure Metering ModesMulti
      Center-weighted
      Spot      		Multi
      Center-weighted
      Spot
      Exposure ModesAperture Priority, Auto, Manual, Program, Shutter PriorityAperture Priority, Manual, Program, Shutter Priority
      Metering Range-3 to +20 EV-1 to +20 EV
      Exposure Compensation±5 EV (1/3 EV, 1/2 EV increments)±3 EV (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) ±3 EV (3, 5 shots at 1/3 EV, 1/2 EV, 2/3 EV, 1 EV, 2 EV increments)
      DXO Sony Alpha 7R IIIA Sony Alpha 5100
      DxO Low Light ISO35231347
      DxO Color Depth26.023.8
      DxO Dynamic Range14.712.7
      DxO Overall Score10080
      Video Sony Alpha 7R IIIA Sony Alpha 5100
      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, AVCHD, XAVC S
      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 min30 min
      Terminals Sony Alpha 7R IIIA Sony Alpha 5100
      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 Micro
      SpeakerMonoMono
      Built-in MicrophoneStereoStereo
      Microphone Input
      Headphone Output
      Flash Sync Port
      Connectivity Sony Alpha 7R IIIA Sony Alpha 5100
      Built-in GPS
      Built-In Wi-Fi
      Wi-Fi Version802.11b/g/n, 2.4 GHz802.11b/g/n, 2.4 GHz
      Built-In Bluetooth
      NFC
      Remote Control wired, wireless, smartphone wired or PC
      Environmental Sony Alpha 7R IIIA Sony Alpha 5100
      Environmental Sealing
      Operating Temperature32 to 104°F / 0 to 40°C
      Physical Sony Alpha 7R IIIA Sony Alpha 5100
      Dimensions127 x 96 x 74 mm (5 x 3.78 x 2.91")110 x 63 x 36 mm (4.33 x 2.48 x 1.42")
      Weight (inc. batteries)657 g (1.45 lb / 23.17 oz)283 g (0.62 lb / 9.98 oz)
      Box Dimensions (LxWxH)9.6 x 6.1 x 5.7"6.5 x 5.5 x 5.25"
      Package Weight3.005 lb1.315 lb
      Power and Storage Sony Alpha 7R IIIA Sony Alpha 5100
      Battery PackNP-FZ100NP-FW50
      Battery Life650 shots400 shots
      USB Charging
      Internal Storage
      External StorageSlot 1: SD/SDHC/SDXC (UHS-II)
      Slot 2: SD/SDHC/SDXC/Memory Stick Duo Hybrid (UHS-I)      		Single Slot: SD/SDHC/SDXC/Memory Stick Duo Hybrid (UHS-I)
      Other Sony Alpha 7R IIIA Sony Alpha 5100
      Self Timer 2 or 10 sec; continuous 3 or 5 exposures 2 or 10 sec, continuous 3-5 shot
      Orientation Sensor
      Tripod Mounting Thread1 x 1/4"-20 Female (Bottom)
      Accessory Mount1 x Hot Shoe Mount
      Material of ConstructionMagnesium Alloy
      Electronic Level Gauge


      For a full review please go to the review page:

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