June 21, 2015 at 3:00PM


Need help on advanced sky replacement

I'm working on a scene, where a group of people are standing outside on a cloudy day, and the clouds ripple away, to reveal a clear blue sky. The sky replacement itself shouldn't be TOO hard for me, but my problem is the shadows, and everything on the ground. Of course, direct sunlight is hard, and casts sharp shadows, but clouds/ diffused sun makes everything soft. How can I simulate that change with such a big group, realistically?


>>>How can I simulate that change with such a big group, realistically?

The only thing I can think of is to rent a large HMI light to act as your sunlight, and then boost the shadows from this light in post. You might even shoot this scene late in the day as the overcast light from the clouds starts to become dim, making your artificial light appear to be much brighter. ( you will have limited time to shoot the scene, as things might become too dark 20-30 minutes later )

If a HMI is too expensive, then you might just rent the largest fresnel light you can get your hands on and still be able to power it. ( i.e. 2K might be your limit with household AC power ) You will have to fix the color in post, but the effect should be similar to the brighter daylight balanced HMI light.

June 21, 2015 at 4:09PM

Guy McLoughlin
Video Producer

Thank you! I'm thinking HMI lighting is the best way to go; i'll just have to dig a bit deeper into my wallet. I've never worked with HMI's before, so it should be interesting, to say the least.

June 22, 2015 at 4:48PM

Craig Douglas
Writer/ Director/ Editor/ Videographer


March 9, 2017 at 2:15PM, Edited March 9, 2:15PM

Stephen Kawakami
The Boss

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