Cinema vs FF lens Focal Length confusion

[John Stamets]

I edited this to hopefully make it a little clearer.

Do you apply crop factors based on Focal Length regardless of lens type? For example, would both an 18mm Red Prime and an 18mm FF35 Still lens both have the same 1.49 crop factor applied for Mysterium-X @ 4.5K?

Thanks for any assistance.
John

 

[Joel Devereux]

Yes. Crop factors are sensor based, not based on lenses. On the RED site at the moment, they are a focal length calculator based on what camera, what focal length and what size recording you are using.. ie 4.5k at 18mm, and it shows you how much of the frame is recorded.

 

[John Stamets]

Ok, Thanks!