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.D800E test data on DxO Mark D850 test data on DxO Mark
Cameras with longer battery life can take more photos before exhausting their batteries.
Special note: The measurement standard for battery life stipulates that if a camera has an internal flash, it must be used for 50% of photos taken. For this reason, comparisons of one camera with an internal flash to another without will not be comparable
Rugged build; Excellent controls; Extremely high resolution, even more than the D800; Dual cards; Surprising high ISO performance.
Moire problem with certain subjects; Very large files; Slower frame rate; Battery life lower than D700.
Class-leading resolution; Excellent dynamic range; Very good high ISO performance; Very fast AF and burst shooting; Durable weather-sealed body; Improved ergonomics; Touchscreen; Dual card slots; 4K video.
Live view/video mode still uses sluggish contrast-detect AF; Viewfinder only tests at ~98% coverage; No 4K at 60p; 30-minute video clip limit; Focus peaking not supported with 4K.