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GTA IV Camera System
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Content Type: Addon
Addon Type: Effects
Addon Tags: Movie, Scenic, Realism
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GTA IV Camera System

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📷 GTA IV's Dynamic FOV When Looking Up

Overview:
In Grand Theft Auto IV, when the player tilts the camera upward (for example, to look at a building), the game dynamically changes the Field of View (FOV) to make vertical objects appear taller, more massive, and more dramatic.

🎯 How It Works
When the player looks up past a certain angle:
  • Vertical FOV gradually decreases
  • The scene is visually "compressed" upward
  • Objects stretch vertically without zooming in horizontally
  • Creates a realistic lens effect like a telephoto camera

📊 FOV Behavior
Condition|FOV Behavior
Looking forward|Normal vertical FOV (around 60–75°)
Tilting camera upward|Vertical FOV gradually decreases
Looking directly upward|FOV at its narrowest; vertical lines appear stretched

🧠 Visual Result
  • Buildings feel taller and more intimidating
  • Camera preserves horizontal perspective
  • Environment feels more cinematic and grounded

💡 Why It Matters
This effect enhances immersion using a subtle trick:
Decreasing vertical FOV makes the brain perceive vertical distance as larger than it really is — without needing to change player scale, camera height, or zoom level.

✅ Summary
  • GTA IV uses dynamic vertical FOV adjustment while looking up
  • This makes tall objects feel realistic and massive
  • It's a simple yet powerful visual illusion