5 stars, no question. I can't imaging a camera/lens this can't handle with aplomb. Build quality in all respects is superb and the included cover and ARCA plate are appreciated. It's a little heavy, but to my mind stiffness is ALL. I won't be schlepping it deep into the woods. I purchased this for photographing the eclipse and later birds and whatever else I fancy. My Wimberley has some very light stiction when moving slight a amount trying to follow the sun. In this regard the Katana is better due to the roller bearings, but when tightening the pivots the camera head moves slightly, so zeroing in on a position and locking it down is a bit of an iterative process. That being said, I don't think the head needs needs to be locked down very tightly after experimenting for an afternoon. I'm using a Canon 7DMkII with 100-400 L IS II zoom and either a 1.4 or 2.0 extender. Also remote trigger and Thousand Oaks solar filter. I'm experimenting with the tradeoff between autofocus/less mag and manual focus/more mag. I might just lock it into a position with a lesser mag and take photos as the sun marches across the sky. I bracket the exposure and use silent continuous shooting.