5
Extract the foreground Make a
selection of areas of foreground to blur.
here the surface of the River Tiber needs
smoothing to make the long exposure effect
credible. Once again employ edge Detection,
but keep the radius lower for less complex
edges, such as along these stone pillars.6
Motion and Gaussian blur use
Motion Blur to streak the reflections
on the water’s surface. set the angle to 90
degrees for a vertical blur profile, if like here
an ultra-long exposure effect is what you seek.
Finally, apply a light Gaussian blur to soften
surface details.7
Clear up edges Keeping selections
active during blurring should retain sharp
edges. To remove any selection mistakes,
use the Pen tool or Polygonal Lasso to trace
straight edges, and snap Layer Masks to
follow these for a sharper blur transition. This
is useful for buildings, monuments and cliffs.Simulated exposure
By carefully masking the
blur filters and observing
the natural movement of
subjects in a long exposure,
a natural effect can be
introduced, adding energy
to a static scenePRO WAys TO use shuTTeR sPeeD