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.
D3S test data on DxO Mark EOS R test data on DxO MarkCameras 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
Cameras with more dynamic range allow you to take photos with dramatic differences in highlight and shadow areas while retaining detail in both.
Think of a brilliant sunset on a rocky beach: Bright sunset in the background, with dark rocks in the foreground. High dynamic range means more of the extremes will be faithfully reproduced.
Dynamic range test data courtesy of DxO Mark.
EOS R test data on DxO Mark D3S test data on DxO MarkVery good overall image quality; Good dynamic range & very good high ISO performance; Excellent Dual Pixel CMOS AF performance; Sharp native lenses; Great performance with adapted optics; Compact design; Fully articulating LCD.
Sensor performance lags behind competition; No In-Body Image Stabilization; Sluggish burst speed with C-AF; Mediocre battery life; No 4Kp60; 1.7x 4K crop; Ergonomics could be better.
