Focal Length & Film Size

Hi there.

I’m trying to work out the relationship between the focal length and film/sensor size in the app. I know you’ve mentioned that you intend to introduce a ”sensor size” feature in a future update, but what is the default at the moment?

In relation to that how are you measuring focal length? For example, if I set the zoom setting to 18 this does not seem to correspond to an 18mm lens on super 35 film.

It would be really helpful to know!

Thanks.