To make a bottle 3D model photorealistic, focus on four core elements: accurate materials, detailed textures, realistic lighting, and subtle post-processing.
- **Accurate materials**: Use glass shaders that simulate refraction (light bending through glass) and reflections—this replicates how real bottles interact with light. - **Detailed textures**: Add small, authentic flaws like label wear, dust, or tiny scratches (free resources like CC0 Textures work well for beginners). - **Realistic lighting**: Use soft studio lights or natural sunlight to cast natural shadows and highlight the bottle’s shape—harsh light looks unnatural. - **Subtle post-processing**: Mimic camera effects like slight depth of field (blurred background) or subtle glare to make the model feel "photographed."
For beginners, start with software lighting presets to test how light impacts the bottle, and layer simple textures to build realism gradually.