AddComponent with string in unity5

Well, AddComponent's generic parameter expects a type, not a string. AddComponent actually creates an entirely new component of the given type. As far as I know there is no way to get unity to add a new component AND copy the values from another.

However, what you seem to be doing is copying ALL the components of one game object to another. If appropriate, I'd recommend just using GameObject.Instantiate, which creates a copy of an entire game object, including all it's components.

If you really need to copy components without creating a new game object, there's an answer here:

http://answers.unity3d.com/questions/458207/copy-a-component-at-runtime.html

The main issue here is that you're trying to call AddComponent with an object rather than a type, which is what's causing your issue. There are 3 possible ways you can fix this:

Solution 1
Use AddComponent with a generic function

This is very close to what you already have, and only requires you to use GetType rather than the object itself

Component[] components = GameObject.Find("CamFly").GetComponents(typeof(Component));
for (var i = 0; i < components.Length; i++)
{
    objCamera.AddComponent<components[i].GetType()>();
}

Solution 2
Use AddComponent with a type as a parameter

Very similar to the first solution, but uses GetType as a parameter. If you were using the return value, then you'd notice that the type returned here is Component, whereas the solution aboves return type is whatever you pass in to the generic function

Component[] components = GameObject.Find("CamFly").GetComponents(typeof(Component));
for (var i = 0; i < components.Length; i++)
{
    objCamera.AddComponent(components[i].GetType());
}

Solution 3
Use AddComponent with a string argument

Again, this relies on GetType, but uses a string instead of the type object. I haven't tested this, and my gut says it will be the slowest solution (because Unity will need use reflection to find the type you want), but is here so you can see the possible uses

Component[] components = GameObject.Find("CamFly").GetComponents(typeof(Component));
for (var i = 0; i < components.Length; i++)
{
    objCamera.AddComponent(components[i].GetType().ToString());
}