Rolling vs. Global Shutter modes in CMOS cameras

There’s a good article explaining the difference between these exposure modes here – http://alliedscientificpro.com/rolling-shutter-or-global-shutter-modes-for-cmos-cameras/?goback=.gde_1628247_member_202082300

Bottom line for any quantitative work is that rolling shutter may introduce a source of temporal error. You can consider a rolling shutter to a flatbed scanner in it’s readout. So, if an object is moving while the image is being scanned, the object will slide across the formed image. This scan occurs at high speed. Depending on the camera, it could be 5mS or 30mS. The important consideration is that if you are using the camera to measure things that move, if the object is in motion at some speed greater say 1 pixel per 100mS, it’s important not to use rolling shutter. Another place where this is important is behind spinning disk confocal systems.

-Austin