Maximum effective ISO is an estimate of the highest sensitivity at which a camera can capture excellent quality photos.
Cameras with higher effective ISO will be better choices for indoor photography, night shooting, and indoor sports photography, especially if you intend to make large prints.
You can learn more at our glossary entry.
Maximum effective ISO test data courtesy of DxO Mark.Z6 test data on DxO Mark Z7 test data on DxO Mark
Familiar design in a compact form; Rugged build quality; Gorgeous EVF; Excellent image quality; Good autofocus; In-body image stabilization; Good 4K video recording.
Single card slot; Not as good at subject tracking as some Nikon DSLR cameras; Limited native lens selection (although adapter works well); Limited buffer depths.
Great image quality; Terrific high ISO performance; Fast AF speeds; Eye AF; Swift 12fps burst shooting; In-body image stabilization; High-quality 4K video; Robust build quality; Familiar Nikon design.
Single XQD card slot; Default high ISO NR a bit strong; No 4K 60p; 1/200s x-sync speed; Limited native lens selection (at this time).