My primary photo camera at the moment is the A7RIII. I was looking to upgrade this year and based on the updated video features of the A7RV, I'm thinking I'll cave in and purchase the newer model. BUT I'm also debating if the A7RIV is sufficient considering the current $500 discount?! It seems like from a photography perspective, they'd be comparable. But the video updates are what really sets the 5 apart? #Alpha 7R IV (a7RIV)