With my Nikon D5500 I didn't consider EC was useful when discussions went to use EC. Very recently I discovered that I can use EC, Exposure Compensation., with my OM-D E-M5 iii. Menu->Button Functions->+/--> select Exposure +/- (usually the default). Next scroll down to Dial Function->scroll down to M/B select front dial to +/-. Now when auto-ISO it will adjust the ISO within the Auto ISO settings. Other camera Olympus/OM System bodies may have different Menus. Other manufactures mirrorless bodies may have similar functionality.