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photo:sonya7riii

Sony a7R III full frame mirrorless camera

see also:

Recent Sony cameras have a bug that “eats” stars in RAW and JPG astrophoto images when exposure time is 4 secs or longer, or BULB - This has been slightly improved in the a7RIII HOWEVER IT STILL EATS STARS!1)

introduction

  • announced Oct 2017
  • similar to Sony a7R II full frame mirrorless camera but faster with more dynamic range and a new Pixel Shift mode - see below for more details on the differences
  • who is it for?
    • wedding photographers
    • portrait photographers - industry leading Eye AF tracking technology (although the a9 gives more frame coverage)
    • landscape photographers - industry leading dynamic range and image detail in a full frame camera
    • studio photographers - Pixel Shift offers high detail, improved color rendition and minimal moire
    • videographers
    • unlike the earlier model, the C-AF tracking and improved burst rate now makes it an option for sports and wildlife photographers and even birders although telephoto reach may be an issue unless you are prepared to pay a lot for big, expensive lenses

specs

  • see also full specs
  • 42.4mp back-illuminated sensor with no anti-alias filter
    • 425 CDAF points
      • Eye-AF, which locks the focus on the pupil of faces that are detected
      • Flexible Spot AF (with adjustable focus point sizes)
      • Zone AF
      • Lock-on AF C-AF
    • excellent RAW dynamic range now to 15EV
  • 399 PDAF points PLUS 425 CDAF points giving 68% of frame coverage
  • Bionz X processor
    • improved sharpening algorithms
    • diffraction reduction software for small apertures
    • context-sensitive, 'area-specific noise reduction'
  • focus peaking
  • panorama sweep mode
  • 10fps burst with AE/AF tracking up to 28 uncompressed RAW or 76 compressed RAW (8fps with continuous live view)
  • Pixel Shift mode for less moire
  • shutter 30sec - 1/8000th sec but is it still loud?
  • silent shutter mode
  • 1st electronic shutter to reduce vibrations
  • flash sync 1/250th sec
  • no built-in flash but multi-interface flash shoe
    • Multi-Interface Shoe allows you to connect a latest model Sony flash, an external mic, video lamp, or XLR adapter
  • exp. compensation ±5 EV
  • ISO 100-32,000 (extended: 50, up to 102,400)
  • 3“ tilting 1.44m dot touch LCD but touch only to select AF point
  • 3.69-million dot Quad-VGA OLED Tru-Finder with 0.78 x magnification and 18.5mm eye point (from the frame)
  • 4K video:
    • internal UHD 4K 3840 x 2160p at 30/24 fps in XAVC S format
    • full pixel readout with no binning and can be shot with full-width frame capture or Super 35 crop mode (at 5K data then oversample to 4K)
    • customisable picture profiles
    • S-Log3 Gamma as well as SLog2 and Hybrid Log-Gamma (HLG)
  • 1080 120/60/24p HD video XAVC S7 codec at 100Mbps, with uncompressed HDMI out
  • USB 3.1
  • weather sealed, magnesium body
  • WiFi with NFC
  • PC sync terminal
  • 2 x SD card slots including one UHS-II
  • ability to star rate images in camera
  • improved menu with a favorites My Menu section
  • 1lb 7.2oz / 657 g incl. battery, card
  • 5.0 x 3.8 x 3” / 126.9 x 95.6 x 73.7 mm
  • $3200 body only
  • optional VG-C3EM vertical grip & 2nd battery holder
  • optional AC Adapter

firmware updates

issues

improvements over the Sony A7RII

  • same sensor but 1EV more dynamic range at low ISO due to a gapless on-chip lens design and anti-reflective sensor coating and improved circuitry and processing
  • processes images 1.8 times faster
  • adds 425 CDAF points instead of 25, giving 68% of frame coverage instead of 45% coverage
  • IBIS improved to “5.5EV”
  • 10fps burst rate instead of only 5fps in either mechanical or silent electronic mode but need to drop to 8fps for continuous live view
  • better mirror shock handling and better shutter shock handling
  • imroved EVF and rear screen
  • adds HiRes mode (“Pixel Shift Multi Shooting”) similar to Olympus OM-D cameras but delivering 4 pixel shifted RAW images covering 169mp but outputs to a single 42mp RAW with better colour fidelity and texture reproduction than a single shot (ie. much less moire)
  • adds the a9's touchscreen focus point control and multi-selector joystick on the back of the body in place of the button-style directional pad as well as anti-flicker ability, a 2nd card slot,
  • AF twice as fast and extends to low light of -3EV
  • “Additional improvements in focusing flexibility include AF availability in Focus Magnifier mode, focal-plane phase-detection AF support when using A-mount lenses, an ‘AF On’ button, a multi-selector or ‘joystick’ for moving focusing points quickly, flexible touch focus functionality and much more,”
  • 120fps 1080 HD mode
  • USB 3.1
  • larger grip and battery 2.2x longer lasting (same as the Sony a9 full frame mirrorless camera)

reviews

photo/sonya7riii.txt · Last modified: 2017/11/22 09:13 by gary1