How to Use the Motion Blur Filter in Photoshop For Long Exposure Shots
Take your long exposure shots to the next level! In this tutorial, I’ll show you how to use Photoshop’s Motion Blur filter to enhance the natural blur in water for a more polished and dramatic effect.
This video is from our Landscape Editing in Photoshop and Lightroom Course.
Video Summary
This tutorial demonstrates how to create a smooth, glass-like water reflection in Photoshop using a non-destructive workflow. Starting from a photo edited in Lightroom, the host shows how to apply a Motion Blur filter selectively to the water. The key steps involve converting the layer to a Smart Object for editable adjustments, using a layer mask to paint the effect only onto the water’s surface, and fine-tuning the blur intensity after the fact.
Timestamps:
0:20 – Duplicates the background layer as a standard starting practice.
1:11 – Converts the new layer into a Smart Object. This crucial step makes the filter effects editable later.
1:37 – Applies the Motion Blur filter from the Filter menu. Sets the angle to vertical and adjusts the distance/pixel amount to smooth the water (~225px used here).
2:59 – Adds a layer mask to the Smart Object layer. Holds Alt/Option while clicking the mask icon to create a black (inverted) mask, hiding the blur effect entirely.
3:56 – With the mask selected, uses a soft Brush tool (with reduced opacity and flow) painted in white to selectively reveal the motion blur effect only on the water’s surface.
5:49 – Demonstrates the advantage of the Smart Object: double-clicking the “Motion Blur” filter under the layer allows for real-time adjustment of the blur intensity without re-painting the mask.
6:47 – Saves the image, which automatically updates back in Lightroom for further editing.
