Color depth refers to the number of unique colors that a sensor can faithfully capture. Cameras with better color depth will demonstrate smoother transitions from one color to the next, and avoid "banding" in areas with subtle shading. (Blue skies are an example of where you might see color banding.)
More color depth is generally better, but you'll struggle to notice a difference between two cameras with less than 1 bit of difference. Color depth above 22 bits is considered excellent.
Want to learn more? Head over to our full glossary entry on color depth
Color depth test data courtesy of DxO Mark.RX1R II test data on DxO Mark RX100 V test data on DxO Mark
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.RX1R II test data on DxO Mark RX100 V 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.RX1R II test data on DxO Mark RX100 V test data on DxO Mark
Excellent image quality; Extremely high resolution; Surprisingly good high ISO performance; Outstanding dynamic range; Handy variable low-pass filter; Fast phase-detect AF; Built-in EVF.
Fixed, single focal length lens; Poor battery life; No built-in flash; No touchscreen LCD; Slow buffer clearing; No 4K video; Expensive.
Pocket-friendly design; Unbelievably fast burst capture; Generous buffer depth, even for raw; Fast and confident autofocus; Very high resolution gives lots of detail in good light; High ISO noise levels much better than most pocket camera rivals; High-quality 4K video with uncompressed HDMI out; Super-fast High Frame Rate video
Very pricey for a compact camera; Still no touch screen; Slow buffer clearing; JPEGs can look over-processed at higher ISOs; Lens doesn't offer much telephoto reach; Battery life is very modest; 4K movies are limited to five minute clips