This is a technical question related to Panasonic m4/3 cameras. Why do they not offer in-body (moving sensor) image stabilization for the m4/3 camera line? One of the reasons for not using in-body stabilization on a regular DSLR is that the image through the viewfinder is not stabilized. This objection would not apply to a camera with an electronic viewfinder, such as the panasonic m4/3 cameras. By going with an in-lens image stabilization system, and then leaving it out of some lenses, such as the 20mm f/1.7 lens, Panasonic is somewhat undercutting the advantages of image stabilization.