Artichokes in a vase.
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For Corona render, it is recommended to use version no lower than 1.5, as the glossiness of materials is set considering PBR.

Those working in V-Ray version lower than 3.1 should be careful; in the materials section, BRDF is set to 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.