So here are the resolutions for the current Retina MacBooks and the Retina iMac. I'm wondering if these are the right (k) monikers for each display.... MacBook 12" 2304 x 1440 = (2k?) MacBook Pro 13" 2560 x 1600 = (2k?) MacBook Pro 15" 2880 x 1800 = (3k?) iMac Retina 27" 5120 x 1880 = (5k) Sorry this is a weird post, but I've been wondering about it for a few months (for no reason really.) But I am just curious to what is considered 2, 3, 4, or 5k. Do they round off the numbers, or if a display is 2560 x 1800 is it a 2k because it starts with a 2? Kal.