Normal and superconducting state domains in a 10 µm thick indium slab are observed by the magneto-optical imaging technique. The sample is subjected to a magnetic field H with different sweeping rates H. The domain patterns are found to depend on the penetration regime of the magnetic flux. For the lowest sweeping rate (H=1 mT s−1), the domains are randomly oriented. For the highest sweeping rate (H =230 mT s−1) and sufficiently high H-values, the domains consist of a nearly straight laminar structure with a well-defined period, oriented perpendicularly to the edge of the sample. These first results open new perspectives for studying the dynamics of formation of magnetic domains.