From..... Lumix GX7 Review Part 2 - Sensor, Shutter and In Body Stabilization - Small Camera BIG Picture Don’t expect the GX7 IBIS to be as effective as what you might be used to in the Olympus OMD system if you currently have one but this is a effective IBIS system. One of the very best features of 'any' camera, IMVHO, is the IBIS of the EM5. Pity, because I'd fallen in love with the GX7. EDIT. From.... http://www.ephotozine.com/article/panasonic-lumix-gx7-vs-olympus-om-d-e-m5-comparison-review-22646 If you shoot video, the GX7 has more options and settings as well as a full range of frame speeds, however as the in-body image stabilisation isn't active in video mode, you would be best investing in optically stabilised lenses. The Olympus OM-D E-M5, with 5-axis image stabilisation, does an excellent job at stabilising the video, regardless of what lens is on the front. Choosing between the two is an extremely tough choice, as the cameras are extremely closely matched, and I think it would be difficult to be disappointed with either of them.