On Mt June, in Oregon, this alpine meadow shows shadows from clouds that are outside the frame moving towards the camera. A few humans walk past. The shadows move steadily up the hill as low-density, light clouds in the top four tenth of the frame meander along harmlessly.
Time-lapse length (30 fps):
8 seconds and 17 frames.
Fog, mist, at just the right altitude will create sunbeams, light rays, on trees. The frames pans downward slowly towards a felled tree trunk. Many fine details from the tree are in the center of the frame, and this is no coincidence; the object between the sun and camera will cast the shade.
Time-lapse length (30 fps):
11 seconds and 19 frames.
A steady amount of fog pours through, while just above. Without a layer of cloud above, the full brightness of the sun is coming through the canopy at top-right, spreading out as sunbeams on the ferns, mossy rocks, and vegetation of the hill, which climbs 45 degrees and fills a third of the frame. A three second interval is used.
Time-lapse length (30 fps):
18 seconds and 14 frames.
Fog catches the sun and the shadows of the tall trees cast shadows on the glow. The hillside is steep and falls away from the left frame, covered in ferns and vegetation, which slowly move on the breeze. The fog slowly falls away, taking the sunbeams with it.
Time-lapse length (30 fps):
32 seconds and 2 frames.
… and shine when altitudes are just right. Light rays, cast by thin branches create the longest shadows cast on the glow of the sun, with the fog ending just feet above the trees. Mossy tree trunks and severed branches, remnants of them still on their trees, mostly at left, with a smaller fallen tree center-right. A few ferns are in the lower left corner of the frame, quivering slightly in a breeze.
Time-lapse length (30 fps):
31 seconds and 3 frames.
Small pines by the hiking trail. The light rays are dominant and clip’s beginning and end. There is a period of no fog in the middle of playback. The hiking trail passes by the tree at left. The greens of the trees are vibrant when the fog fades at clip’s end. Lens flare: partially present.
Time-lapse length (30 fps):
15 seconds and 10 frames.
One of the slowest-moving of the forest fog clips. Trees of varying age and size, all evergreen conifers, are the subjects of the frame, while the upper limits of a fog bank is. The sun pours through the branches, and the high radiant intensity on the fog makes for a bright light ray effect. A small fraction (lower left) of the frame is a grassy hill foreground. The greens on the lower right stand out, mossy branches of trees illuminated.
Time-lapse length (30 fps):
12 seconds and 3 frames.
Generally speaking, the foggy forest is not a dynamic source of light- it’s normally diffuse and thick enough so the light above cannot even penetrate it. But when the ceiling of the fog is at the altitude of the observer, the sunbeams highlight the ferns on the forest floor.
Time-lapse length (30 fps):
10 seconds and 20 frames.