 Mirror-less cameras often have "preview zebras", which is another aid for being aware of and correcting over-exposure.Raw processing software may feature "highlights reconstruction" algorithms  (currently unavailable in-camera) which are able to partially mitigate the negative visual impact of digital hard saturation of the three color channels, thus extending the range of blow-able unimportant highlights slightly.In general, whether one is dealing with a high-DR scene or a low-DR scene, both the process and aim of ETTR are the same