The community-driven widescreen patches work by modifying the game’s memory instructions in real-time. The PS2’s Emotion Engine renders 3D geometry based on a "Field of View" (FOV) value. Patches find this value in the game's code (ELF file) and alter the projection matrix. Mrt Loader V319 Extra Quality | Triage (by Hatching).
For titles like Ratchet & Clank or Sly Cooper , the 4:3 image is part of the nostalgic charm. But for epic RPGs and action titles, widescreen patches unlock a "Director's Cut" version of the game that makes the PS2 library feel surprisingly current. They turn a dated artifact into a timeless experience. Tawarin Kontl Ke Adik Kandung Sendiri Poophd0 Better ✓
If you have the widescreen patch, use it. You can never go back to black bars.
Essentially, the patch tells the game engine: "Zoom the camera out horizontally to capture 33% more of the world, but keep the vertical height the same."