Directed by Maneesh Sharma, "Fan" features Shah Rukh in a double-role as both an obsessive fan 'Gaurav' and the object of his obsession, superstar 'Aryan Khanna'.
Metzker, who works as a colourist with Prime Focus company, found it tough to work on the character of 'Gaurav' as the actor's face was digitally restructured through VFX to make him look younger.
He associated with cinematographer of "Fan", Manu Anand, to ensure a realistic grade (colour) for both the live action and the VFX elements in the images.
"We are all extremely thrilled about the final film and I look forward to working with Manu again soon," he added.
Prime Focus began work on 'Fan' in November 2014 when 20-30 shots of the film were tested, and the final look of 'Gaurav' was locked in.
Over 500 hundred hours were spent grading the VFX plates and fine-tuning the colour of the movie which released last Friday.