EXIF, Histogram, Exposure statistics
The defaults for the Grid mode are optimized for speed. Only preview and XMP-data are read for a file, the decoding of the RAW data is not preformed. Thus, the Histogram, Exposure Statistics, and EXIF Data panels remain empty:
To switch decoding of RAW data on, press the “statistics” ( ) button in the upper-right corner of the Grid mode display window.
When you click this icon, it brightens up and the decoding of the RAW data is turned on, thus enabling the display of the Histogram, Statistics, and EXIF data:
RAW data decoding takes some time; during the decoding the active file (for which the RAW data is read and decoded) is highlighted with a red frame: