Nikon D800 & Canon5d mark2?

Which camera is Nikon D800 & Canon5d mark2 suggest in best wedding, modleing, outdoor shoot image

They are both very good cameras. The Nikon D800 has many more megapixels (36), while the Canon 5d mark 2 has 21 megapixels. To be honest, 21 megapixels is enough for most things. If you want to make very, very big prints then the D800 would probably be better, but if you're going to be putting photos online, then either one is fine.

Actually, the Canon 5D mark 3 is a better camera to compare to the Nikon. It is like the 5D mark 2 but with better autofocus and slightly higher megapixels.

Depends on the skills of the photographer and how well they know how to use a camera/lens…

Nikon D800 is best camera. It is available with very good features.

Both are great tools for these purposes. The D800 has a slight edge.

The D800 is newer, and produces images with a little better dynamic range. A bit more expensive. The difference in megapixel isn't an issue when it comes to weddings and model shoots. 21MP of the Mark II is enough, unless you're planning some extreme enlargements.

If you're used to shooting Canon and already have Canon glass, I'd get the mk II. The D800 is a better buy however if you're used to shooting Nikon and/or can afford the higher price tag.