Great reviews have already praised the ease of use and the lightweight, and I'm not going to repeat the same comments, although they are right: this tripod is a pleasure to carry and use.
Our goal is to test the tripod's stability in a landscape context by checking the loss of sharpness when edge conditions are met: max height and max weight in a moderately windy context. The tripod is claimed to support 8.8 pounds. The XT's weight, loaded with a 70mm Rodenstock, is 4.7 pounds. K&F states, "With a compact 50 cm folded size, it’s effortless to carry, making it ideal for travel, outdoor shoots, and professional use, even on rugged terrains ».The XT will do for professional use.
So today, I went to Key West's seaside with the XT and an iPhone, equipped with the 240 mm tele lens from Reeflex. The wind was 14-16 mph, which on the Beaufort scale translates to "Small waves, becoming longer seas.".A small boat was 100-200 meters away, so I took it as a target for both cameras. The boat was moving up and rolling quite a bit, so keep this in account while checking the results. I decided to move the tripod up to head level to accentuate the risk of wobbling. I attached two crops showing how both cameras captured the boat details and texture. Both images are decent given the circumstances (distance, wind, and the tripod's height).
This K&F tripod can support a heavy professional camera and deliver excellent quality under challenging conditions.