Karen X. Cheng Profile picture
Director • Sharing my creative experiments • Business: team@karenx.com

Dec 5, 2022, 7 tweets

NeRF update: Dollyzoom is now possible using @LumaLabsAI
I shot this on my phone. NeRF is gonna empower so many people to get cinematic level shots
Tutorial below -

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#NeRF #NeuralRadianceFields #artificialintelligence #LumaAI

2/ First, stand still. Have a friend take a quick video of you
Capture the area in front of you and behind you

3/ Here's the raw footage btw for anyone curious
(Feel free to download it so you can follow along)

4/ Upload footage to @LumaLabsAI
Wait (about 30 minutes) while Luma turns it into a NeRF
Disclosure: I am an advisor for Luma. They've asked me to test some features. All opinions are my own.

@LumaLabsAI 5/ Luma just released a new feature - the ability to change focal length. That's what we'll be using to achieve the dolly zoom effect

The trick to getting a dolly zoom is to keep the body size the same

Change the distance, then use focal length to keep your body size the same

@LumaLabsAI 6/ My low tech solution to measuring my body size: I stick a post-it note to my monitor

Then I increase the distance and then adjust the FOV so my body size stays the same

Lastly, I added some speed ramping in After Effects and color grading in Premiere

7/ Kinda crazy all that was made from a quick phone video

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