An offset umbrella has typically aluminum or wood support pole extending up from the support stand and then at the top bends and angles abruptly out within the shaded area and a canopy is attached to the conclusion of the pole.

A cantilever similarly has a metal or wood support pole extending up from the support stand but will routinely have another little bit of aluminum or wood affixed to the key support pole that extends out within the shaded area and an umbrella is then suspended from this second little bit of aluminum or wood.

Will there be any added benefit of having an offset patio umbrella over a cantilever? The only real added benefit that I possibly could find will be the easy ability of the lowering the height from the floor to the umbrella with the cantilever umbrella. garden umbrella with stand price

Typically by raising the lever pole you are able to raise and lower the umbrella quite easily. The offset umbrella on the other hand would require a two piece support pole that fit inside of each other with a pin apparatus with holes drilled through the poles enabling raising and lowering of the entire pole and then placement of a pin to secure the poles in position. (This is much like the standard market umbrellas)

The offset and the cantilever umbrellas will most likely allow for tilting to track the movements of the sun in the sky. This can maximize the shade potential of the umbrellas when the sun is reduced in the sky during sunrise and sunset.