DxOMark has tested the image sensor of Sony Alpha a7 IV (B&H Photo Video/Adorama/Amazon) full frame mirrorless camera. According to DxOMark, Sony a7 IV sensor achieved a high score of 97 in benchmarking, which puts it in joint 7th position in DxOMark’s rankings for all sensor sizes, including medium format.
From DxOMark:
As the 24 MP BSI-CMOS full-frame sensor equips the out-going Sony A7 III, and the majority of Sony’s rivals at this level, the new 33 MP BSI-type CMOS in the Sony A7 IV will also probably appear in forthcoming competitor’s models, so the results are doubly interesting.
While the new sensor doesn’t perform a lot differently from the outgoing device, there has been a useful increase in the overall pixel count of 37.5% (albeit a 16.8% increase in linear pixel count on the long-edge). This may appear somewhat incremental, but when combined with the various improvements in stills and video features, the new Sony A7 IV is an incredibly well-rounded hybrid and a highly attractive option for all sorts of genres.