I'm a big Sony fan, but these mirrorless systems are so incredibly bad with battery life. My biggest pet peeve. I shoot a lot of weddings, photo AND video (mostly photos) and recently sold my old A7 mkI because of the battery life and so I now I'm playing around with the new Fuji's to try something new. I kid you not, but even when shooting photos only, I still kill 3 - 4 batteries on a wedding day. Not even talking video yet. I'm really keen to see how this new A7III compares. I know it's not as important to everyone, but it becomes a stupid annoyance after a while. Wish I could at least try the mkII that you own.