On Corona Legacy Mtl models. TurboSmooth was applied for the render at 1 iteration. The polygon count is specified without TurboSmooth. The sizes of the cushions are 400x400, patchwork cushions 500x500. The size of the blanket is 1700x1350 mm. For Corona render, it is recommended to use version no lower than 1.5, as the glossiness of the materials is set considering PBR. Those working with V-Ray versions lower than 3.1 should be careful, as the materials in the BRDF section have Microfacet GTR (GGX). If your version is older than 3.1, the BRDF field will be empty. Choose Blinn, Phong, or Ward – whichever is preferable for you.