Nikon D500 100th Anniversary Edition User Manual - Page 150

A ISO Sensitivity The higher the ISO sensitivity, the less light needed to make an exposure, allowing faster shutter speeds or smaller apertures, but the more likely the image is to be affected by noise (randomly-spaced bright pixels, fog, or lines). Noise is particularly likely at settings between Hi 0.3 and Hi 5. A Hi 0.3-Hi 5 The settings Hi 0.3 through Hi 5 correspond to ISO sensitivities 0.3- 5 EV over ISO 51200 (ISO 64000-1640000 equivalent). A Lo 0.3-Lo 1 The settings Lo 0.3 through Lo 1 correspond to ISO sensitivities 0.3- 1 EV below ISO 100 (ISO 80-50 equivalent). Use for larger apertures when lighting is bright. Contrast is slightly higher than normal; in most cases, ISO sensitivities of ISO 100 or above are recommended. A See Also For information on choosing the ISO sensitivity step size, see Custom Setting b1 (ISO sensitivity step value; 0 294). See Custom Setting d3 (ISO display; 0 297) for information on displaying ISO sensitivity in the control panel and viewfinder. For information on using the High ISO NR options in the photo and movie shooting menus to reduce noise at high ISO sensitivities, see pages 286 (photos) and 290 (movies). 124