Hi everyone,
Hopefully someone can help me out here. So I'm shooting vertical anamorphic on the BMCC 6k. The lenses that I'm using are the Atlas Mercury lenses which have a 1.5x squeeze ratio. Now, in the lens data I want to enter the correct focal length, because I love the idea of getting rid of the rolling shutter a bit by using the Gyro Stabilise function, which relies on that bit of lens data.
What do I enter as a focal length, considering it's a 42mm lens, with a 1.5x squeeze ratio, mounted vertically?

I have no idea..
Thanks,
Mx