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Hallway 3d model
Who works in V-Ray versions lower than 3.1, be careful, in the materials in the BRDF section there is Microfaset GTR ( GGX ), your version is older than 3.1, then the BRDF field will be empty. Choose Blinn, Phong or Ward - which is more preferable for you. For Corona render, it is recommended to install a version of at least 1.5, since the glossiness of materials is adjusted taking into account PBR