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Should You Use Motion Blur in After Effects?

An explanation of when to use Motion Blur.

You just finished your animation masterpiece… but something is missing. Oh! You forgot to check on the motion blur! There we go... Perfect.

Now on to the next project... right?

A lot of designers don't like using Motion Blur on their projects, some even go so far as to say Motion Blur should NEVER be used. We want to give Motion Blur a fair shot so we’re going to go through a few examples where motion blur could be beneficial or where your animation may be stronger without it.

The Benefits of Motion Blur

The idea of motion blur was brought into animation to help blend frames and imitate the blurring that occurred in older cameras, due to objects moving quickly. Nowadays, we have cameras with high speed shutters, so we’re able to nearly eliminate motion blur, much like the human eye.Without motion blurring applied to your animation, each frame is like a perfect still moment in time, and the motion can feel a bit staggering. This is exactly what stop motion animations are. While the motion is smooth, each frame is a perfect moment in time.

Laika's Stop Motion Film, "Kubo and the Two Strings"

However, when we apply motion blurring, the motion can feel more natural, as the frames feel more continuous. This is where motion blur really can shine. When our animation is striving to imitate real life, or being composited into live-action footage, motion blurring can really help sell the believability of our animation and make it feel like it was captured on a camera.

Imageworks' VFX breakdown from Spider-man: Homecoming

The Problem with Motion Blur

When we’re working on a typical 2D mograph project in After Effects, it might feel natural to just apply motion blur on everything before your render, but sometimes it’s better to have no motion blur at all.

Let’s talk about a simple ball bounce. You’ve animated this nice ball dropping in and bouncing to a rest. Let’s compare how it looks with motion on, and motion blur off.

Imageworks' VFX breakdown from Spider-man: Homecoming

The motion might look desirable in the beginning, though we do start to lose some of the more nuanced bounces where the ball is closer to the ground. In the Motion Blur version, we also don’t actually see a frame with the ball touching the ground, until it’s closer to the end. Because of this, we start to lose the feeling of the ball's weight. Here, motion blur might feel a bit unnecessary, but it also takes away a little bit of detail in our animation.


Back in the earlier days of animation when every frame was hand-drawn, animators would use a few techniques like “smear frames” or “multiples” to convey fast movement. A smear frame is a single illustrated depiction of motion, whereas some animators would draw multiples of the same illustration to show the motion. The best part is, your eyes don’t even notice the difference.

An example of a smear frame in the film "Cat's Don't Dance"
An example of the multiples technique in "Spongebob Squarepants"

Traditional animators are still using this technique today in motion graphics, and it works extremely well. Henrique Barone from Giant Ant is pretty amazing at inserting smear frames at just the right moment. See if you can spot the smear frames in this GIF below:

Character animation by Henrique Barone

What If You’re Working In After Effects?

There are very stylistic ways that you can convey fast movement without having to turn on the default motion blur. Some animators create motion trails that follow the object that’s moving, others also utilize the smear frame technique.

Check out an example here of some stylistic motion trails:

An example of motion trails, from Andrew Vucko's "The Power of Like"

And here are a few examples of the smear technique in After Effects:

An example of smears in Emanuele Colombo's "Don't be a bully, loser."
An example of smears, by Jorge R Canedo for "Ad Dynamics" by Oddfellows

This is even a technique that animators are using in other mediums as well. We used stop motion as an example of animation that typically doesn’t have motion blur, but here you can see an example of smearing done on a 3D printed character in Laika’s stop motion film, “Paranorman”:

3D printed smears for Laika's film, "Paranorman"

Additionally, it’s being utilized in 3D animation too. In “The Lego Movie”, they had a very stylized way of doing smear frames, utilizing multiple pieces of legos to convey the idea of fast motion.

So when you’re working on your next masterpiece, stop and think about what type of motion blur is best for the project. Is your project supposed to look fully realistic? Then maybe using the default motion blur in After Effects or Cinema 4D would help make it feel more natural.

Or do you think your project would benefit from a more stylized type of motion blur? Perhaps too, no type of motion blur at all can sometimes be a good option. Whatever you may choose, just make sure that you’re making a choice based on what your animation would benefit from the most!


If 2D trails and smears are your thing, here are a few plugins that can help you get a good start. Though, sometimes creating it yourself can result in a more interesting approach:

Or if you’re working with a more realistic animation or a 3D render, we really love the plugin Reelsmart Motion Blur (RSMB)

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