B1Sunset fade
Warm gold on the face → blue dusk
Flat grey overcast → hard shaft of sun
B3

Wide shot of a lone hiker with a red backpack on a misty mountain ridge, photoreal adventure, locked camera. 0–2s: flat grey fog light, the valley invisible. 2–4s: the clouds above tear open. 4–6s: a hard shaft of sunlight sweeps across the ridge onto the hiker, mist glowing gold and the valley appearing below. 6–8s: the hiker stands in warm sunlight, a sharp shadow stretching behind, and lifts their face to it. Throughout: drifting mist catching the light, vast scale, fixed camera, one continuous take.
Soft-to-hard is the change to describe. Mention the shadows snapping sharp, since that's how viewers feel the sun arrive.
B1Warm gold on the face → blue dusk
B2Blue earthglow → blazing gold
B4Blue dark → white flash → changed scene