In some robot vision or some fast machine vision applications, or the vibration hardly situaition, it is probably caused some vibration, this may casue the image blur and it is effected the image stability. So fixedness lens is very important in this machine vision application. In order to solve this problem, SBS VISION provide anti-vibration lens to solve such hard nut. The image is still quite good under the 50KHZ 20g viberation situation, here is the related video links for you reference to get more idea about this machine vision lens.