However , Sony already 61Mp A7R IV 24Mp A7 III , sticking 12Mp means A7S III even better low-light capability predecessor much better autofocus system , vari-angle screen highest-resolution viewfinder around.The A7S III grabbing headlines resolution ; promises make capturing 4K video easier video quality best 4K footage get Sony camera.It ’ disappoint quality footage superb.Although Sony stuck resolution A7S II , 12.1Mp full-frame CMOS sensor inside Sony A7S III new backside-illuminated ( BSI ) structure.Using design enables photosites receive light standard CMOS sensor , means low-light performances boosted.Read Sony A7S III Review Price reviewed £3800 €4200 / $ 3499 Check current price For Large pixels great low-light performance 4K full-pixel readout without binning 10-bit depth 4:2:2 colour available recording formats Vari-angle touchscreen class-leading electronic viewfinder Against 12Mp seems low resolution stills Uses new memory card format ( CFexpress Type A ) 's interchangeable SD Panasonic S1H Specification Sensor : 24.2MP full frame CMOS 24.2MP full frame CMOS Video : 6K ( 5.9K ) 3:2 24p , 5.9K 16:9 30p , C4K/4K UHD 60p Autofocus : 225-area DFD contrast AF 225-area DFD contrast AF ISO : Dual Native ISO ; 100-51,200 ( 50-102,400 exp . )