Unity Camera editor

[bardo78]

I've some suggestions for the Unity Camera editor.

• First of all, rename the "next!" button into "change camera". If it's possible, add a little description under the button or as tooltip where you specify that pressing that button you save the distance where the sim will change to the nex camera.
• When simulation is on, it opens the cameras viewer. If it's possible, I ask you to add the lens camera properties to the right of every camera preview. It helps to speed up the camera configurations.