More details on the lens selector for
@lichtcamera.
The glass is a Metal shader refracting the live camera preview. It runs on a dynamic light engine I built for the whole app, so its light effects are never static. It reacts to how you hold and point your phone.
The selfie camera sits in the same strip as the back lenses, but it behaves separately. When you reach the 0.5× lens while dragging, it slides further out and opens a gap. Reaching it takes a bit more travel, so you don't hit it by accident.
All these details work together. That's what makes it feel right for everyday use.