When using reflection probes, what is a key guideline for achieving accurate reflections on reflective materials?

• A. Place reflection probes near reflective surfaces and adjust their size/range as needed.
• B. Place reflection probes only at scene corners.
• C. Place reflection probes only above objects.
• D. Reflection probes are unnecessary.

Answer: (A)

Reflection probes capture the environment from a fixed point in space and use that cubemap to render reflections on surfaces. Placing the probe near the reflective surface makes sure the reflected environment matches what the surface actually sees, rather than a distant or unrelated part of the scene. The size or range of the probe’s influence should cover the reflective area so the surface samples from the correct local environment; if the probe is too small or too far, you’ll get seams or inaccurate reflections as different parts of the surface pull from different probes or from less relevant data. In practice, position the probe close to the surface and adjust its influence so the entire reflective area (plus a small margin) is within that probe’s range, which yields more accurate and consistent reflections.