For me a 5 star ball head is one that is easy to tighten and loosen and doesn't sag. This head is not very good in either case. I literally just got back from a sunrise to sunset photo tour, and I'm not thrilled with how these heads fared. was sufficient. I was a little frustrated that I had to loosen and tighten both knobs to adjust, but once locked the head was stable enough for long exposures. When I mounted a lightweight 70-300mm lens, things looked very different. I used to mount a very heavy 80-200mm f/2.8 lens and noticed a lot of flex. I don't use this lens very often, especially on a tripod, so I figured the 70-300 would be fine for me. It wasn't and I was disappointed. Every time I had a composition and tightened the handles, it sagged. I head for my desired composition at the top, put it on, and then drop it onto the desired competition. Even then there was no guarantee. I had to tighten both handles as tight as possible. The combination makes a terrible impression. I bought two of these because I wanted one for a tripod and one for a monopod. I have an old non-arca ball head that I can't buy anymore (to have the same mount on tripod and monopod). I decided to get all three and compare. The old ball head sags but has a very large knob that is very soft to tighten but still holds it securely in place. I've tried both peargears and they're about the same in terms of sag but a lot more work to hold them in place. When I loosen the little knob (which I think is the tension) the ball drifts too much. If I tighten it to keep the ball from drifting, I eventually have to loosen both to get the ball moving again. After a while of tightening and loosening, I can feel my fingers starting to hurt. When you tighten the knobs, they actually move the ball (same goes for the pan control), so you'll have to fight that as well. A good ball head should be forgotten and the stage in front of you will be your main concern. This ball head is too annoying for me on the spot. I've owned them too long to come back to this point, so I'll probably keep them to myself. I can live with a less than perfect head on a monopod because it doesn't need solid support. For tripod work I will find a better head with less play and easier grip tightening. I'll tolerate it for a while, but I don't think I can live with it for long.
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