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.M (Typ 240) test data on DxO Mark M9 test data on DxO Mark
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.M (Typ 240) test data on DxO Mark M9 test data on DxO Mark
Excellent image quality, with unique film-like "Leica look"; No-nonsense controls; Solid build; Good print quality.
Difficult to focus in low light; High default contrast and saturation; Manual focus only; Lack of low-pass filter can leave moire and other artifacts.