Introducing the Garlicky Filmback Calculator – A Free Tool for VFX Artists

If you've ever worked in 3D camera tracking or matchmoving, you know the pain: what's the exact sensor size of the camera that shot this footage? Getting the filmback wrong means your entire camera solve is off — and with it, every CG element you place in the scene.

That's why we built the Garlicky Filmback Calculator — a free web app that gives you all the filmback information your VFX heart desires, at the push of a button.

What Is Filmback and Why Does It Matter?

"Filmback" refers to the physical dimensions of a camera sensor's active imaging area. Together with the focal length of the lens, it determines the field of view (FOV) of the recorded image. In VFX, this relationship is critical: if your 3D software doesn't know the correct filmback and focal length, the virtual camera won't match the real one — and your composited elements will look off.

This is especially important for 3D camera tracking (matchmoving), where the software reconstructs the real camera's movement in 3D space. Feed it wrong sensor data, and your tracked geometry will be stretched, squashed, or simply won't line up with the plate.

How the Garlicky Filmback Calculator Helps

Our calculator is a lightweight web app — no installation required. Simply visit filmback.garlicvfx.com, select your camera, and instantly get the sensor dimensions you need for your tracking software, whether that's 3DEqualizer, SynthEyes, PFTrack, Nuke, or any other tool in your pipeline.

Key features include:

• Comprehensive camera database — covering cinema cameras from ARRI, RED, Sony, Blackmagic, Canon, and more

• Instant filmback calculations — sensor width, height, and diagonal at your fingertips

• FOV and focal length tools — calculate field of view from known parameters or work backwards

• Mobile-friendly — use it on set from your phone, no app download needed

• 100% free — built by VFX artists, for VFX artists

Built from Real-World Production Experience

The Garlicky Filmback Calculator was born out of the same frustration every VFX artist knows: scrambling to find accurate sensor data in the middle of a project. Having worked on productions like Star Wars: Andor, Meg 2: The Trench, and The Crow, as well as countless commercials for brands like Audi, Porsche, and Nivea — I've been in that situation more times than I can count.

Whether you're on set needing a quick reference, or back in the studio setting up your camera solve, the calculator is designed to get you the data you need in seconds — not minutes of Googling.

Watch It in Action

Check out the walkthrough video on YouTube where I demonstrate the full functionality of the Garlicky Filmback Calculator: https://youtu.be/B1rtDJQaT7w

Try It Now

Head over to filmback.garlicvfx.com and give it a spin. If it saves you even five minutes on your next project, it's done its job.

Got feedback or a camera model you'd like to see added? Drop us a line at info@garlicvfx.com — we're always looking to improve the tool for the community.