Originally posted by Col Say a landscape lit by a full moon
Or, as the wikipedia article highlights, an outdoors scene illuminated by a 'bright' Aurora borealis or Aurora australis.
Indoors -3 EV happens a lot when you are shooting live music in dim pubs or venues, for example. Being able to meter down into shadowy darkness, and get focus, will be extremely useful, especially as a lot of venues don't allow flash use.
It also means K-3 users won't have to use the annoying AF assist lamp to help us get focus. I hate the AF assist light, and always have it turned off.