Insta360 is teasing an all-new camera series co-engineered with Leica . The Insta360 Luna Pro and Luna Ultra cameras, hidden behind partially-frosted glass at Insta360’s large booth at NAB in Las Vegas, promise high-end single- and dual-lens imaging and familiar form and function. Insta360, best known for its 360-degree cameras like the X5 and its Leica-engineered Ace Pro action cameras, looks like it is targeting DJI’s brand new Osmo Pocket 4 and rumored dual-camera Osmo Pocket 4P. While Insta360’s NAB booth offers only a broad-strokes look at the single-lens Luna Pro and dual-lens Luna Ultra, the Osmo-like shape is immediately obvious.…