It came for about 3 weeks. Eventually I got this and tested for many time and found some issues: some pieces of dirt found in lens assembly, and some vertical noises while preview. And I solved these for tear off lens assembly and cleaned all optical parts, there's many metallic small scrap parts found with many finger prints, and noise was reason of temperature, low temperature makes strange noises on sensor. Plus default cs mount 2.8mm make huge vignetting. it is belong to lens structure. it seems to better for 5mm in wide angle. 2.8mm actually meaningless for this camera. anyway it is much good to use.
everything is ok !! Thanks !