Through a lens, darkly

I was puzzled. I know that indoor photography needs more light than I tend to assume, but my camera was prompting for flash even on very bright days, and my images were coming out oddly dark overall. I didn't think much of it at the time, but it did seem weird.

Of course, if I had noticed that I had left the polarizing filter attached since the last time I did outdoor photos ... in early October or so ....