I like to use the EyeFi when on vacation as I use it to transfer the jpeg to my phone where I can post process and upload to sharing services. But I don't want to have the EyeFi on constantly, the battery life on my mu43 bodies is already well short of what I am accustomed too with my SLRs. With my Olympus bodies there is a setting to turn the EyeFi off. I browsed through the Panasonic menues several times and didn't see anything like that off hand. Anyone use an Eyefi with a G5? If you can't turn the EyeFi off how great is the hit on your battery life?