SummaryPanasonic's Leica Summilux DG 25mm f1.4 is a high quality standard prime lens with an effective focal length of 50mm. It's the second Leica-branded lens from Panasonic for Micro Four Thirds, and like the 45mm f2.8 macro before it, Leica designs the optics and Panasonic manufactures it in Japan. The build quality and manual focusing ring are of a high standard and it delivers great quality r