My Mum used to suffer quite badly from SAD, or the winter blues. She bought a lamp, which she swore by, and when she died a few years ago we inherited it. It does actually seem to perk us up on those dark winter days.
As the SAD lamp is supposed to mimic sunlight, yesterday I tried it out as a light source. It works very well for that too! So here's a couple of shots dedicated to my wonderful late Mum.
Both taken with the A7rii and Sony 90mm macro. Background is my laptop screen.