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.D5200 test data on DxO Mark 80D 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
Captures sharp, detailed photos with its new 24.1-megapixel CMOS sensor, even at higher ISOs; Features a familiar (D5100) but refined body design; Records Full HD video with full-time autofocus tracking; Packs a ton of advanced features into a consumer-friendly body at a great price.
Autofocuses a little slowly for its class and struggles at times in low light; Changing some basic settings takes more time and effort than it should; Mediocre kit lens.
Very good image quality; Better RAW high ISO performance than predecessor; Improved buffer depth; Very fast AF; Dual Pixel CMOS AF is excellent; f/8 AF support; 1080/60p video; Headphone jack; Very good battery life.
New kit lens isn't very sharp; No 4K video; No clean HDMI out; 29:59 minute video recording limit; Phase detect AF not as sensitive in low-light as expected (Dual Pixel AF better in low-light).