Image analyzation was applied to investigate the relation between size and shape of particles and also the effect of water pressure upon the shape of atomized powders. The particle shape was evaluated by an index called the shape factor which is a ratio between the area and the perimeter. It was found that most of the produced powder had shape factor values higher than 0.5. As the particle size increased, shape factor distribution had a tendency to broaden and the mode to decrease. Higher water pressure resulted in more irregularity, but beyond intermediate water pressure, the shape factor values only differed slightly.