Kalin Petrov is based in Sofia, Bulgaria, and is a partner at Concept Studio. He works freelance too. 

He has more than 13 years of experience in the film industry and has been in charge of the colour grading of a great number of features and short films, TV series, TV commercials and music videos.

He has worked on several international productions and co-productions for clients from USA, Russia, Ukraine, Nigeria, Serbia and North Macedonia.