# Skintone Scope

## Overview

The SkinTone Scope is a specialized tool for monitoring skin tones. It creates a color qualifier targeting only the skin tone range, offering precision in color grading.

<figure><img src="https://565437294-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-MFqn5MuayPgQPMZ9pwf%2Fuploads%2Fgit-blob-a2c902b913c991e2e9d36b49eee16f6cbbf04bcd%2F2023-12_st_settings.jpg?alt=media" alt=""><figcaption><p>SkinTone Scope settings</p></figcaption></figure>

## Color Models

The SkinTone Scope features two color models:

* **HSV** (Hue, Saturation, Value) — Ideal for intuitive adjustments as it separates the color (hue) from the grayscale information (value).
* **YCbCr** (Luma, Blue-Difference Chroma, Red-Difference Chroma) — Suited for broadcast standards, focusing on luminance (Y) and color difference (Cb and Cr) components.

<figure><img src="https://565437294-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-MFqn5MuayPgQPMZ9pwf%2Fuploads%2Fgit-blob-8a9c7ecd58aaedc215001b66e27d5620dbee92aa%2F2023-12_skintone_overlays.gif?alt=media" alt=""><figcaption><p>SkinTone overlay modes</p></figcaption></figure>

## Features

* **Luminosity and Saturation Range** — Narrow the range for finer control over skin tones.
* **Overlay Modes** — Three visualization options: grid, solid color, or a custom gradient between two selected colors.
* **Global Mask** — Apply the skin tone selection as a global mask so all scopes display only the skin tone areas from the active image.

<figure><img src="https://565437294-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-MFqn5MuayPgQPMZ9pwf%2Fuploads%2Fgit-blob-b0ca19a57934aecea760c015fe4cfb8e705dbdd7%2F2023-12_st_mask.jpg?alt=media" alt=""><figcaption><p>Global mask applied to all scopes</p></figcaption></figure>

* **Low-Pass Filter** — Smooth out the selection for a more natural look.

## 3-Color Mode with Sharp Transitions (1.10.139+)

Adds a three-color overlay mode with sharp transitions for quick pass/fail matching of skin tones.