I created overhead demonstration videos for YouTube. My friends with other cameras can have continues focus on their camera whether they are coloring on the desktop or if they are bringing the subject closer to the camera above. No blur, no focus in and out. Is the GH5 capable of this and if yes, how do I set this? I am not camera literate, this camera was a gift from my son, but if I need another camera I need to know. I am using a Lumix 25 lens. Not sure if that is the issue either. Thank you for any help.