Green Screen Distance Calculator

Calculate minimum subject-to-screen distance to avoid green spill.

Subject Height

Lens Focal Length

Screen Width

Screen Height

Tab to move between fields

Min Subject-Screen Distance

12 ft

≈ 24 smartphones

Camera Distance (full body)11.2 ft

Total Room Depth23.2 ft

With Lighting Zone26.2 ft

How to Use This Calculator

Enter Subject Width in feet — the widest part of your talent or prop.
Input Lens Focal Length (mm) and Sensor Size to define your camera field of view.
Set the number of Lighting Zones (1–3) — more zones reduce spill and hot spots.
Read Min Subject-Screen Distance (ft) to ensure subjects stand far enough from the backdrop.
Camera Distance (ft) gives the ideal lens-to-subject placement for a clean key.
Total Room Depth (ft) is the minimum studio length needed to pull off the shoot.

How the result changes with Subject Height

Identify Input Parameters
4 parameters
Subject Height = 6, Lens Focal Length = 35, Screen Width = 12, Screen Height = 10 = 4 input(s) provided
Calculate Min Subject-Screen Distance
Min Subject-Screen Distance
12 = 12
Calculate Camera Distance
Camera Distance
11.2 = 11.2
Calculate Total Room Depth
Total Room Depth
23.2 = 23.2