Abstract: The present invention relates to system and method for minimizing motion artifacts during the fusion of an image bracket based on preview frame analysis. The system 100 mainly comprises a preview frame capture module 101 to render preview image frames typically invariant in exposure, focus and other related capture parameters at video rate. The system 100 also comprises a scene dynamic range assessment module 103 to assess the extent of dynamism of scene subjects and intensity expanse by sampling the scene at periodic intervals through preview image frames. The system 100 uses the calculated measure of dynamism and intensity distribution to control the parameters used for detecting and preventing motion artifacts during the fusion of subsequently captured bracket of images nuanced in capture parameters such as exposure or focus.