Arjun Rampal, along with wife Mehr and journalist Khalid Mohammed, is all set to make a documentary on his mentor and one of India’s most celebrated cinematographers, Ashok Mehta. Rampal and Mehta go back a long way. It was Mehta who gave Rampal his first break in Bollywood with ‘Moksha’, where he starred opposite Manisha Koirala. Mehta, the DOP behind acclaimed films like ‘Bandit Queen’ and ‘36 Chowringhee Lane’ among others, was recently diagnosed with lung cancer. Rampal said, “This is something that I wanted to do for him and I am doing it.” However, the actor refrained from divulging further details. The documentary will be shot in Mumbai and will be around 90 minutes long.