Photometry and Joshi's office (1 reply)
I was reading through and trying to get my head around your breakdown of Joshi's office.
What has me stumped is the maths behind the eventual kit order. For example, when the producers ask how many red heads you need, how do you and the team calculate 75 for the background array? I'm guessing, considering the red-heads were a cost saving measure in themselves the answer wasn't order 100 and rig them until you get the FC you need!
Any in-sight into what variables you consider (is it more than distance and fixture output?) and how you crunch that data would be greatly appreciated. Thanks.
I judged the distances involved and the light level I required. It seemed to me the Red Heads would do the job and would be quite inexpensive to rent and rig. I knew I had some much more complex rigs to come and I suspected I would have to justify the cost of some of these to production.
I have always looked to the most cost effective way of doing any set up. I guess that comes from working on documentaries and lower budget films.