Sony A7rIV (left) vs Sony A7rIII (right)
Sony a7R IV: What you need to know (Dpreview).
Sony a7R IV’s real-time Eye AF during video recording (Dpreview).
Sony A7R III vs A7R IV – The 10 main differences (MirrorlessComparison).
Sony A7R IV: primeras impresiones (Photolari).
Sony A7rIV and new accessories:
Sony A7rIV in USA/CA at BHphoto, Adorama, FocusCamera, Amazon, Henrys.
Sony A7rIV in EU at Calumet DE, ParkUK, WexUK, Calumet NL.
Sony A7rIV in Asia at Sony Japan. Sony Australia.
Sony VG-C4EM grip in USA at BHphoto, Adorama, Amazon, FocusCamera, ParkUK, WexUK.
ECM-B1M Digital Audio Shotgun Microphone at BHphoto, Park UK.
XLR-K3M Mic at BHphoto, Park UK.