The tremendous progress in nanophotonics towards efficient quantum emitters at the nanoscale requires investigation tools able to access the detailed features of the electromagnetic field with deep-subwavelength spatial resolution. This scenario has motivated the development of different nanoscale photonic imaging techniques. Among them superresolution (awarded by Nobel Prize), which, however, is not a near field method. In this talk, we will discuss in detail the difference between superresolution and scanning near field optical microscopy. Then we will overview the possibility in using near field microscopy for optical imaging and engineering at the nanoscale both in semiconductor nanostructures and photonics nano-resonators.