Chair IKEA KARL-YAN https://www.ikea.com/en/p/karl-yan-stul-temno-seryy-kabusa-temno-seryy-40357818/  Who works in the V-Ray version lower than 3.1 be careful in the materials in the BRDF section there is Microfaset GTR (GGX) if 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 configured taking into account PBR Enjoy your use and successful projects )