First off this is a great matte box option with a native 114mm mount for cinema lenses and then a full pack of popular lens sizes (77mm, 82mm, 95mm) with rings to adapt them to 114mm. That's incredible for the price and quality of this kit. Next up, it's a great build and I'm happy that there are native 4 x 5.56mm trays for filters and it comes with two stages if you want to do ND and mist, or any other 2-filter combination. I love the locking knobs and how simple it is to access and lock down everything. This is a no-bs matte box that truly focuses on quality and speed. However, the only thing that keeps me from giving this 5 stars is the tray release. It's questionable and not the best system. There's a silver/gray flip switch that releases the trays but it kinda fans the trays out partially for you to then grab and slide out of the matte box. I'm not a fan of this too much. I'd rather have something that locks the trays in individually and then provides a way to lock them in. There also needs to be a better way to take the trays out. This partial fan then slide system has me nervous that I'm going to drop a filter. Still a solid option, but could use some improvements for best practices.