I carry 3 lenses and 2 filters for each (ND: 6-stop and 10-stop). I'd like to carry fewer filters. I also take a filter-free version of every shot for compositing. That's a lot of screwing and unscrewing. I worry about dropping them, and I probably move the camera a bit, though not more than Photoshop can correct. I've been thinking about a square filter and mount, but I've never really looked into them. Any suggestions on something nice that would tilt all 3 lenses? Panasonic 12-35, Panasonic 35-100, and Olympus 9-18. Thanks.