This One Trick Will Help Your LUTs Look Better

If you've ever applied a LUT and wondered why it looks flat, washed out, or completely wrong on your footage, you're not buying bad LUTs. The problem is almost certainly a mismatch between your footage and the LUT's input expectations. Here's the one correction that fixes it.

Why LUTs look wrong

A LUT (Look Up Table) is designed to be applied to footage with a specific exposure profile. Most creative LUTs are designed to work on correctly exposed, colour-balanced footage: neither underexposed nor overexposed, with a neutral white balance. If your footage is slightly over-exposed, has a warm white balance, or is still in a flat log profile, the LUT will interpret all of those as part of the "neutral starting point" and apply its look on top of a mismatched base.

The result is a LUT that looks nothing like the preview image. Colours are off, contrast is wrong, and the overall look is unpredictable.

The trick: correct exposure and white balance before the LUT

In Final Cut Pro, colour corrections are applied in sequence, top to bottom in the Color Inspector. This means a correction you place above another will be processed first, and the LUT (typically applied as a Custom LUT effect) receives the already-corrected image as its input.

The fix: in the Color Inspector, apply a Color Board or Color Wheels correction first, before the Custom LUT effect. Use this first correction purely to bring your footage to a neutral technical baseline: correct exposure so highlights are not clipped, correct white balance so whites are truly white, and ensure your overall image looks "normal" before any creative treatment is applied.

Now apply your LUT as the next item in the correction stack. The LUT receives a properly balanced, correctly exposed image (which is exactly what it was designed for) and produces a result that actually matches how it's supposed to look.

Adjusting LUT intensity

Once your LUT is working correctly, you can control how strongly it's applied. In the Custom LUT settings panel, reduce the Mix parameter below 100% to blend the LUT with the original image. This is useful when a LUT's look is exactly right in character but too heavy in intensity. A Mix of 60 to 80% is often the sweet spot for creative LUTs on real footage.

LUT types: creative vs technical

There are two fundamentally different categories of LUTs. Technical LUTs (also called "input LUTs" or "log conversion LUTs") convert your camera's log footage to a standard colour space. These go at the very beginning of your correction stack and are always applied at 100%. Creative LUTs apply a look or style. These go after your technical correction, and their intensity can be reduced with the Mix control. Never confuse the two types or apply them in the wrong order.