Control:how to control your camera, how you hold, how you change your camera lens, the angle
Setting:change the setting in your camera e.g the brightness of ur LCD, auto power, focus, etc
Maintenance :how to keep your camera so there will be no fungus in your lens or camera.
If you're not often shooting in very low light though, it will likely be other factors that grab your attention. One small, but appealing, feature of the D600 is its 100% field of view optical viewfinder. The 6D offers a 97% field of view, so there's a chance that something may end up in the final photo that you didn't notice in composition.
Canon beats the Nikon for signal-to-noise ratio performance throughout the sensitivity run, for both JPEG and raw format files.
http://photography.tutsplus.com/tutorials/remote-shooting-using-your-laptop-as-monitor-and-control-for-your-canon-dslr--photo-6583
Forced perspective is where you make objects in the distance seem larger, smaller, closer or further away than they actually are, relative to your foreground subject. The fun in this is creating trick images that, for example show people holding up a building that appears to be the same size as them.
change the height of the camera with respect to the subject. Let’s begin with a higher perspective. This requires you to get higher than your subject and shoot down on them. You may need to climb a ladder, climb a tree, scale a building in a single bound… whatever it takes. Interestingly, this is the perspective you often have when photographing children. Because they are usually smaller than us, we often point the camera down at them. Unfortunately, it conveys the smallness of the child.
Aperture value(s): f/64, f/32, f/22, f/16, f/11, f/8.0, f/5.6, f/4.0, f/2.8, f/2.0, f/1.8/f1.4 etc. (WE ARE HERE) Control via the lens section
Shutter speed(s): 1/8000, 1/4000, 1/2000, 1/1000, 1/500, 1/250, 1/125, 1/60, 1/30, 1/15, 1/8, 1/4, 1/2, 1 sec, etc. Control via the Camera section