Canon EOS M200 Advanced User Guide - Page 141

ISO Speed Settings ISO Speed Guide zz Low ISO speeds reduce image noise but may increase the risk of camera/subject shake or reduce the area in focus (shallower depth of field), in some shooting conditions. zz High ISO speeds enable low-light shooting, a larger area in focus (deeper depth of field), and longer flash range but may increase image noise. zzCan also be set in [ISO speed] in [z ISO speed settings]. zzUnder [5: Custom Functions(C.Fn)], if [ISO expansion] is set to [1:On], "H" (equivalent to ISO 51200) can also be selected (=461). zzImage noise (such as dots of light or banding) may increase and apparent resolution may decrease at H (equivalent to ISO 51200), because this is an expanded ISO speed. zzIf [z: Highlight tone priority] is set to [Enable] or [Enhanced] (=144), ISO 100/125/160 and H (equivalent to ISO 51200) cannot be selected. zzWhen shooting with a high ISO speed, high temperature, or long exposure, image noise (rough grain, dots of light, banding, etc.), irregular colors, or color shift may become noticeable. zzWhen shooting in conditions that produce an extreme amount of noise, such as a combination of high ISO speed, high temperature, and long exposure, images may not be recorded properly. zzIf you use a high ISO speed and flash to shoot a close subject, overexposure may result. 141