I am considering picking up an EM1 Mk II for sports shooting for newspaper publication. It will be a second body to my Canon setup for outdoor sports initially. Due to the volume of images that I take during an game, I need a way to quickly mark the images as I shoot them for download at halftime. I currently have an EM5 Mk ii and can find no way to mark images in camera for download. In Canon, there is a "key" button to lock the images. Is there something similar in Olympus that I am missing?