By Hakan Gursu @hakangursudr Kettle sketch もっと見る もっと見る
Design Sketches | HakanGursu
Realistic render with an effective communication of materials and surface texture.
Behind the sceens: ideation and design sketching on Behance
Behind the sceens: ideation and design sketching by Alberto Vasquez, via Behance
Fiskars by Colin Roberts at Coroflot.com 익숙
Sketches & Roughs on Behance
Example of how markers as media is useful for product rendering as it can easily show material qualities.