We present a simple and efficient method for real-time in situ observation of thin metallic samples during directional solidificationDirectional solidification, based on a compact setup integrating two optical-microscopy diagnostics in a controlled environment. The dual-view system uses two long-distance, reflected-light optical systems focusing the solidificationSolidification front via a beam-splitter. Both optical lines are equipped with digital cameras with different fields of view. This permits to capture simultaneously the solidificationSolidification process over the whole solidificationSolidification gap (macro-scale field of view), and in a key region of interest (micro-scale field of view). This two-scale observation mode enhances our capability to analyze the solidificationSolidification dynamics of multicomponent alloys, thus providing valuable insights into the microstructural evolution of model metallic alloysMetallic alloys of industrial relevance in response to thermal gradients and solidificationSolidification speeds.