THX vs SMPTE seating distance: Cinema viewing standards explained
When researching optimal TV placement and room design, you will constantly encounter two industry acronyms that dictate how things should be built. Both THX and SMPTE organizations provide strict mathematical geometric formulas for seating distance, but their ultimate goals for the viewer are completely different.
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How this is calculated
THX standards were explicitly designed for commercial movie theaters and premium home cinemas. They recommend a seating distance that creates a wide 40 degree horizontal field of view. This covers your peripheral vision and absolutely maximizes immersion for feature films. SMPTE stands for the Society of Motion Picture and Television Engineers. They recommend a tighter 30 degree field of view, which is narrower and designed specifically to prevent eye fatigue during mixed media viewing like sports and television broadcasts.
Verdict
You should use the THX standard if you are building a dedicated dark room specifically for movies and high-end gaming. You should use the SMPTE standard for open living rooms where you watch casual television with friends and family.
Frequently asked questions
What is the main difference between THX and SMPTE viewing angles?
Which standard should I use to set up my TV?
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