Leica’s Q series of full-frame compact cameras have had the same 28mm f/1.7 lens since the original in 2015, but now the company is shaking things up. The Leica Q3 43 launching today is nearly identical to the 60-megapixel Q3, but it’s got a 43mm f/2 lens for a tighter field of view that’s more appropriate for close-ups and portraits — and, of course, it’s even more expensive, coming in at $6,895 co...