Why opacity 3D model is blurry in shading?

3D models with opacity (transparency) in shading usually look blurry because rendering engines struggle with overlapping transparent surfaces or incomplete alpha blending. Transparent materials need the renderer to blend light through multiple layers—if surfaces aren’t sorted correctly or blending isn’t fully applied, edges or details get smudged. To fix this, enable alpha sorting in your 3D software or use premultiplied alpha textures, which help the renderer handle transparency more cleanly.