how to use scopes in davinci resolve.

Most editors grade by eye. That works up to a point.

The problem with grading purely by eye is that your monitor lies to you. Room lighting, screen brightness, even how long you've been staring at the same frame.. all of it affects what you think you're seeing. A grade that looks balanced in your edit suite can look completely different on someone else's screen.

Scopes don't lie. They show you what's actually in the image, regardless of what your monitor tells you. Learning to read them doesn't replace your eye, it gives your eye something accurate to work from.

Here's what each one does and when you'd reach for it.

the waveform

The waveform is probably the first scope you should get comfortable with, because it's the most directly useful for exposure work.

It maps the luminance values of your image from left to right: the left side of the scope corresponds to the left side of your frame, the right side to the right. The vertical axis shows brightness, with 0 at the bottom (black) and 100 at the top (white).

What you're looking for: are your highlights clipping at the top? Are your shadows crushing at the bottom? Is one part of the frame significantly brighter than another?

A sky in the upper-left of your frame will show up as a bright cluster in the upper-left of the waveform. A shadow in the lower-right will sit low on the right side. Once you understand that relationship, the waveform starts to feel like an X-ray of your image.

The waveform is also your best tool for matching shots. If two clips that should look continuous have different waveform shapes, they'll cut awkwardly even if they look "fine" individually. Get the shapes to match and the edit holds together.

In a scene-referred workflow, your waveform will show values above 100 while you're working in a wide color space. That's expected, don't chase it down. Check exposure after your output transform is applied.

the parade

The parade is a waveform split into three separate channels: red, green, blue.

Where the regular waveform shows overall brightness, the parade shows you color balance. If your shadows are too warm, the red channel in the bottom of the parade will sit higher than the blue. If your highlights have a green cast, the green channel at the top will push above the others.

This is the scope you use to neutralize a color cast on a grey or white surface, match color balance between shots, or check whether your shadows are truly neutral or carrying a tint you haven't noticed.

The goal isn't to make all three channels perfectly identical: color is allowed to be in an image. The goal is to see what's actually there so you can make an informed decision about it.

When you're balancing a shot with a white card or neutral grey, the parade makes that exact: get all three channels to sit at the same level on that neutral surface and the cast is gone.

the vectorscope

The vectorscope shows color information (specifically hue and saturation) in a circular display. The center of the circle is neutral (no color). The further a cluster sits from the center, the more saturated that color is. The direction it sits in tells you the hue.

The most useful thing on the vectorscope is the skin tone line: a diagonal line that runs through the middle of the display. Skin tones, regardless of how light or dark the person is, should sit roughly on or near that line. If they're drifting off it, something in your grade is shifting the skin in a direction it shouldn't go.

The vectorscope is also useful for spotting color casts that the parade might not catch clearly, and for checking overall saturation levels. A cluster that's spread wide toward the edges means heavy saturation. A cluster tight to the center means desaturated or near-neutral.

In general: if your waveform and parade are your tools for exposure and balance, the vectorscope is your tool for color accuracy and skin tones.

the histogram

The histogram shows the distribution of tonal values across the entire image: how many pixels are dark, how many are bright, and how they're spread across the range in between.

It's a useful quick-read for understanding the overall character of a shot. A histogram weighted to the left is a dark image. Weighted to the right is bright. Tall spikes pressed against the left or right edges mean clipping.

The histogram is less precise than the waveform for exposure decisions: it doesn't tell you where in the frame a value is, just that it exists. But for a fast overview of whether a shot is exposed well, it's readable at a glance.

how to use them together

You don't need to watch all four at once. A good habit is to work with the waveform for primary exposure decisions, switch to the parade when balancing color or matching shots, and check the vectorscope when dealing with skin tones or checking your saturation is sitting where you want it. The histogram is more of a secondary reference - useful for a quick read but not where you spend most of your time.

Learning to grade with scopes open changes how you work. You stop chasing the right "feel" on a monitor that might not be calibrated. You start making decisions based on what's actually in the image.

That's what a real workflow looks like.

scopes inside the coolgrades workflow

When we built the coolgrades pipeline, scopes weren't an afterthought. The masterclass covers how to read the waveform and parade at each stage of the node tree: what to look for after the input CST, what balanced primaries look like in DaVinci Wide Gamut, and how to use the vectorscope to protect skin tones through the grade.

Understanding scopes is one of the fastest ways to level up as a colorist. Knowing how to build a proper pipeline around them is what makes it all click.

→ see what's inside coolgrades

— ricardo & camille