I could see the spotlight being unpleasant because the brightness differences might cause eye strain, unless the light is really perfectly placed. Sunlight (or even shade) seems much better in this regard. Interesting idea though—I’m surprised how affordable that spotlight is.
Note: If you don’t mind spotlights, 10,000 lux isn’t that hard. Just buy one of these and point it directly at your face.
I could see the spotlight being unpleasant because the brightness differences might cause eye strain, unless the light is really perfectly placed. Sunlight (or even shade) seems much better in this regard. Interesting idea though—I’m surprised how affordable that spotlight is.