General

Sony Alpha a7 III Sony Alpha a7R III
Brand
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Sony Sony
Lowest price
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$1,898.00 $2,646.59
Announced
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February 2018 October 2017

Sensor

Type
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CMOS CMOS
Crop factor
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1x 1x
Megapixels
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24 MP 42.2 MP
Light sensitivity
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51,200 ISO 102,400 ISO
Light sensitivity (boost)
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Unknown Unknown
Sensor cleaning
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Unknown Unknown

Sensor (Advanced)

True resolution
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24 MP 42.2 MP
Native resolution
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6000 × 4000 7952 × 5304
Pixel size
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35.5 µm² 20.4 µm²

Screen

Type
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LCD LCD
Size
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3" 3"
Resolution
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921k dots 1,440k dots
Touch screen
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Yes Yes
Flips out
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Yes Yes
Live view
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Yes Yes

Lenses

Lens availability
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92 lenses 92 lenses
Lens mount
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Sony E (Full Frame) Sony E (Full Frame)

Form factor

Size
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127×96×74 mm 127×96×74 mm
Depth
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2.9" 2.9"
Weight
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650 g 657 g
Interchangeable lenses
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Yes Yes
Waterproof
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No No
Weather sealed
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Yes Yes
Built-in focus motor
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No No

Viewfinder

Type
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Digital Digital
Viewfinder size
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0.78x 0.78x
Coverage
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100% 100%

Movies

Format
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UHD @ 30fps Unknown
Supports 24p
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Yes Unknown
High-speed framerate
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120 fps Unknown
External mic jack
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Yes Yes
Autofocus
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Unknown Unknown
All formats
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  1. 480p @ 30fps
  2. 1,440 x 1,080 @ 30fps
  3. 1080p @ 24fps
  4. 1080p @ 60fps
  5. 1080p @ 120fps
  6. UHD @ 24fps
  7. UHD @ 30fps
Unknown

Features

Panorama
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Unknown Unknown
HDR
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Unknown Unknown
3D
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Unknown Unknown
Image stabilization
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  1. Sensor shift
  1. Sensor shift
Supports RAW
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Unknown Unknown
GPS
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No No

Performance

Startup delay
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Unknown Unknown
Shutter lag
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Unknown Unknown
Battery life
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710 shots 650 shots
Continuous shooting
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10 fps 10 fps

Focus system

Autofocus
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Phase detection Phase detection
Focus points
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693 399
Cross type focus points
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Unknown Unknown

Shutter

Max
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1/8000s 1/8000s
Min
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30s 30s

Flash

Built-in flash
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No No
External connection
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Yes Yes

Storage

Storage slots
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1 1
Supported formats
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  1. Memory Stick PRO-HG Duo
  2. SD
  3. SDHC
  4. SDXC
  1. SD
  2. SDHC
  3. SDXC
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Alpha a7 III
Sony

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Alpha a7R III
Sony

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