Well, it's Photokina time again, as I mentioned the other day, and the titans of DSLRs, Nikon and Canon, are duking it out one more time. This time it's for an "entry" level full-frame DSLR. For Nikon, they have introduced the D600, and for Canon, they are introducing the D6. As said, both have full-frame sensors with the D600 at 24 MP and the 6D at 20 MP. Both have top shutter speeds of 1/4000 of a second. And both will sell around $2100 without a lens. Both cameras are fairly comparable to one another and will provide a needed alternative to higher priced models from Nikon and Canon.
As for how they differ, there are a few differences. The Nikon D600 has a built-in flash, 100% viewing, AF Assist Light, dual axis electronic levels, 39 AF points with 9 cross-type sensors, and an ISO range of 50 to 25,600. The Canon 6D will have no flash, 97% viewing, and 11 AF sensors with only 1 Cross type sensor. However the 6D will have an ISO range of 50 to 102.400, built-in WiFi and GPS, and will meter down to -3EV (the D600 will only measure down to -1EV). And the Canon 6D is about 100 grams lighter than the Nikon D600.
It's good to have options, so both cameras are very welcome.