Watch video: Add motion blur effects in Affinity Photo
A touch of motion blur can create a sense of action with vehicles and other moving objects in your photos. Shooting for panning blur involves using a fairly slow shutter speed (usually around 1/100 to 1/20 sec, depending on the speed of the object), then panning the camera in sync with the object.
If the timing and panning is right, the object will come out sharp and the background will be blurred by the movement of the camera. However, it can be tricky to get it perfect in-camera. So if you want to add the motion blur effect to images afterwards, Affinity Photo offers a host of useful tools.
In this project we’ll show you how it’s done. For a realistic panning blur effect we need our car to be sharp and everything else blurred, so we begin by cutting out the car with precise selection tools. We can start our selection with the fantastic Selection Brush, then perfect it with the Refine command. Once done, we can blur everything behind the car.
The Motion Blur live filter is ideal, as it lets us blur along a linear angle. We can then use another live filter – the Radial Blur filter – to make the wheels appear to spin. Along the way we’ll encounter many key editing tools, useful whether you want to add a panning blur to a car or simply get to grips with live filters and selections in Affinity Photo.
01 Select the car(opens in new tab)
Open up your car image or download our start image here (opens in new tab) then grab the Selection Brush tool and make sure ‘Snap to Edges’ is checked in the tool options. Paint over the car to select it. Use the ] and [ keys to resize the brush tip and hold Alt to subtract areas if the tool includes unwanted details. Continue until the car is selected.
02 Improve the selection
Click the Refine button. Increase the Border Width to expand the area of refinement along the selection, use the Matt brush to tidy messy spots. Use the Foreground and Background brushes to signify different areas. Set the Output to ‘New Layer’ and hit Apply.
03 Fill behind the car(opens in new tab)
Highlight the ‘Background’ layer and duplicate with Cmd/Ctrl + J, hold Cmd/Ctrl and click the thumbnail of the cutout car layer to load a selection. Go to Select > Grow/Shrink and expand the selection edge by a few pixels. Go to Edit > Fill. Check ‘Inpainting’ and Apply.
04 Create the panning blur(opens in new tab)
Go to Layer > New Live Filter Layer > Blur > Motion Blur. Up the Radius and use the Rotation setting to control the direction and strength of the blur. There may be bits that stick out – highlight the top layer, add a layer mask and paint black to hide parts of the car layer.
05 Go for a spin
Highlight the cutout car layer, then grab the Elliptical Selection tool and drag a circle over a wheel. Hit Cmd/Ctrl + J to copy the area to a new layer, go to Layer > New Live Filter Layer > Blur > Radial Blur. Up the Radius to about 9 and drag to align the blur with the wheel.
06 Add the finishing touches
Repeat the radial blur effect over the other wheels. If you need to hide parts of the radial blur, highlight the Live Filter effect layer then paint with black to hide it or white to reveal. Add motion blur to any other areas that may need it, like the reflections in the paintwork.
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