The Q20i is the largest ballhead made by Markins. Markins has a history of making high end ball heads, and the Q20i is no exception. Spoiler, the Q20i is one of the best performing heads I have tested in both pure stiffness and on a weight adjusted basis.
|Stiffness About Vertical Axis||10778 +/- 87 Nm/rad|
|Stiffness About Radial Axis||7616 +/- 47 Nm/rad|
|Weight||1.279 lbs (0.58 kgs)|
|Manufacturer weight rating||110 lbs (49.9kgs)|
|Maximum Height||4.0 in (10.2 cm)|
|Base Diameter||2.6 in (6.6 cm)|
|Ball Diameter||48 mm|
|Quick Release||Arca Clamp|
The size and weight of the place it on the upper end of what we consider a midsize head. Despite this, the Q20i manages to be the second stiffest head I have tested, only behind the massive Feisol CB-70D. This is a remarkable achievement for Markins. Typically there are small weak points on a head that reduce stiffness. Not so here. Markins seems to have thoroughly eliminated all of the typical weak points to make one of the best performing heads I have yet tested.