No offense, but you just need some knowledge about focal length and physics
A lens never knows the sensor behind it. A 35mm will always be a 35mm, regardless if there's a Canikon, Hasselblad oder Fuji behind it. Or even a smartphone. What will definitely change is the angle of view. It's much smaller on a small sensor so it seems as if the focal length would be a greater one.
So what you really want is the same angle of view on every camera. But no one ever uses this attribute - all we talk about is the focal length. This is why everyone is confused when it comes to the crop factor.
