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Long Exposure Effect

Hand it a photograph taken in an instant and it takes the picture again with the shutter held open — where anything that moved is the sum of every place it was, and anything that stayed still comes out sharper than before. Two fields.

bring a photographicsstillphoto-inmotionimage-promptminutes
ExamplesOne photograph in · one long exposure out · time added up
in
Waterfall
in
Road at dusk

We made two examples, from two different photographs: a waterfall, where the moving thing stays in frame, and a road at dusk, where it leaves the frame entirely. One becomes a smooth mass; the other becomes light trails with no cars left in them.

You get the same photo as if it had been taken on a long exposure: water turns into a smooth mass, clouds stretch out along the wind, and cars vanish into red and white trails with the road markings still legible. Anything that stood still stays sharp, though it can come out very slightly softer than the original. Check that the ferns, trees or houses have not gone soft along with the water.

Generated for this library

Input
  What moved  the water, falling straight down the rock
              face and then out across the pool
  How long    long enough for a drop to travel the whole
              height of the fall
  Photograph  waterfall.png (1254 x 1254)

Returned   1 image · 1:1 · the same fall, shutter held open

streaks    one continuous smooth mass - no droplets
           left anywhere, and radiating trails where
           the water spreads across the pool
still      rocks, moss and ferns crisp; measured 17%
           less edge energy than the source, which is
           not visible at viewing size
gone       nothing had to leave the frame here; on the
           road run every vehicle did, completely
place      same viewpoint, same rocks, same ferns
words      none, in any script
SKILL.mdthe whole thing, as you would paste it© vibary.ai

You fill in 2 fields — the braced lines at the top. Everything below them is fixed.

  1. 1What moved, and along what path
  2. 2How long the shutter was open, said as what the moving thing does in that time

Long Exposure Effect

What this makes

Hand it a photograph taken in an instant and it takes the picture again with the shutter held open — where anything that moved is the sum of every place it was, and anything that stayed still comes out sharper than before. Two fields.

The whole template, in one piece. The steps below are the entire workflow.

How to use it

  1. Copy the whole template with the button above.
  2. Attach the photograph and paste the template in the same message.
  3. Replace the two FIELDS lines. Describe the path the way you would trace it with a finger.
  4. Check the still parts first. They should still be crisp — a long exposure on a fixed camera does not smear the bank. If they have gone soft along with the water, the run blurred the picture instead of re-exposing it.
  5. Then check a streak. It should be one continuous smooth band, not several ghosted copies of the same object.

What you swap

What moved, and along what path
the water, falling straight down the rock face and then out across the pool
How long the shutter was open, said as what the moving thing does in that time
long enough for a drop to travel the whole height of the fall

Before it runs

  • A photograph, attached to the message, in which something is plainly moving and something else is plainly not. The whole picture is the contrast between them.
  • A path, not a direction. 'The water moved' produces a smear; 'down the rock face and then out across the pool' produces a shape.
  • A duration expressed as a journey. Seconds mean nothing to a run with no clock; 'long enough for a car to cross the frame' is something it can draw.
  • Something still in the frame worth keeping sharp. Without it the result is just a blurred photograph and proves nothing about time.

When to reach for it

When a picture needs to show that something was moving: water, traffic, a crowd, a fairground, a sky. Templates in this genre ask for a dreamy long-exposure effect and hand back the same photograph with motion blur smeared over the moving parts, which is a still picture with a filter on it.

What changes

  • One photograph in, one long exposure out — same place, same camera position, shutter held open.
  • Moving things become the sum of every position they held, so they smooth into continuous streaks rather than blurred copies.
  • Anything that never moved comes back sharper and brighter than it was, because it collected light the whole time.
  • Something that crossed the frame and left is gone rather than faint, which is the difference between adding light and blending pictures.
  • One image, no grain overlay, no vignette, no border.

Pairs with