Nikon on Wednesday marked the rare start to a new camera format in launching the 1 System. Starting off with the J1 and V1, the two use a new CX-format, 2.7X crop factor 10.1-megapixel CMOS sensor and mirrorless interchangeable lens system that's below Micro Four Thirds but still larger and richer than in compact cameras. They also become the first with the dual-core Expeed 3 processor and are key to getting a fast 73-point, phase-based autofocusing system that Nikon claims is even faster than on newer Olympus PEN cameras.