I forget what it's called, but whatever

Where my comprehension falters is long range abilities that seem to directly affect the environment. Take Erik’s control over metal. Clearly, his true mutation isn’t limited to just shaping metal but in fact allows him to perceive and manipulate electromagnetic fields. Without which Erik hasn’t the means to work metal from a distance. However, if this is the case, why doesn’t Erik’s mutation extend to, say, the electromagnetic spectrum? I mean, why can’t Erik turn invisible by bending light around his body? Or, if that’s too ambitious, why can’t he sense the transmissions, probably radio, made by the type of giant dishes he uses for practicing his kinetic skills?
It can’t even be argued that Erik’s mutation only touches magnetic fields, IMO, because magnetism is intrinsically connected to electricity. How can Erik twist magnetic fields to his will without shifting the electric charges that produce these fields, in turn generating electricity, which is simply the movement of said charges? Why no lightning bolts, Erik?
Actually, Erik should (theoretically) be able to mess around on the atomic scale given that the electromagnetic force keeps electrons in place around the nucleus and is thus indirectly responsible for any substance’s chemical properties. The possibilities here are endless!
The explanation I’m left with is that, while Erik has the potential to do a much greater variety of truly awesome stuff with his gift, he hasn’t realized it yet or undertaken the no doubt arduous training of these latent talents. I imagine his comics counterpart can do better in this respect…? Though I think Erik’s mutation kind of makes him ridiculously powerful. Obviously the downside of granting one man control of one of the universe’s four fundamental forces, lol. (What about the other three? Are there Marvel mutants who manipulate gravity or the strong and weak interactions?)