To fix darkness in electronics 3D models, adjust lighting, boost material reflectivity, or tweak ambient occlusion (AO) for balanced brightness.
Use soft fill lights to brighten small components (e.g., circuit boards) without washing out details—avoid harsh lights that flatten features. For metallic parts (like phone frames), increase specular/metallic values to enhance natural light reflection, making them look more realistic. Reduce AO strength to prevent over-darkening crevices while preserving depth.
In tools like Blender or Fusion 360, start with a three-point light setup (key, fill, backlight) and make small adjustments—this avoids over-brightening and lets you test how changes affect the model’s overall look.