Which tool allows you to create a custom window shape?

• A. The Curve Tool
• B. The Qualifier
• C. The Color Warper
• D. The Open FX panel

Answer: (A)

Creating a custom window shape comes from using a tool that lets you draw your own boundary around the area you want to affect. The Curve Tool lets you draw freeform curves and place control points, giving you a flexible, non-standard window that follows complex edges. This is ideal when a simple circular or rectangular window won’t fit the subject, so you can isolate precisely what you want to grade or apply effects to. The other tools don’t create masks: the Qualifier isolates by color values, the Color Warper shifts color relationships, and the Open FX panel adds effects, not custom window shapes.