LeoFoto LS-284C Test Results

The Leofoto LS-284C is a knock off of the Really Right Stuff TFC-14.  They have tried to disguise this fact slightly with some different cosmetic design choices, but the resemblance is obvious.  It performs well for its price, but not particularly close to the real thing.


NameLeoFoto LS-284C
ClassTravel
Yaw Stiffness479 +/- 1 Nm/rad
Yaw Damping0.152 +/- 0.015 Js/rad
Pitch Stiffness2320 +/- 9 Nm/rad
Pitch Damping0.364 +/- 0.036 Js/rad
Retail Price$200
Weight2.47 lbs (1.12 kgs)
Manufacturer weight rating26.5 lbs
Maximum Height47.4 in (120.4 cm)
Minimum Height10.8 in (27.4 cm)
Center ColumnNo
Base Diameter1.9 in (4.8 cm)
Folded Length17.5 in (44.4 cm)
Folded Circumference8.8 in (22.4 cm)
Folded Volume108.0 cu. in. (1.8 liters)
Leg MaterialCarbon Fiber
Leg Sections4
Primary Leg Angle22 deg
Leg LocksTwist
Top Tube Diameter28.0 mm
Second Tube Diameter25.0 mm
Third Tube Diameter22.0 mm
Fourth Tube Diameter19.0 mm
Exchangeable FeetYes
Foot TypeRubber
Bottom HookNo

The stiffness and damping data are the averages of 10 trials for each measurement.  The reported error is the standard error, except in the case of the damping data. I have set the error in the damping at 10% as the standard error metric does not appropriately capture the error in fitting to the data.  All of the reported specifications are measured, with the exception of the weight rating. The tripod is measured at full height, with the center column down.

 

Example data for oscillations about the vertical axis of the tripod:

This isn’t the cleanest set of data we have ever seen, but it is still clear we are hitting the resonance.  The interesting note is that the initial damping is very good, but once the magnitude of the oscillations gets small that behavior dies out and we get very little damping.  This is an example of non-linear behavior.

Example data for oscillations about the radial axis of the tripod:

In an unusual twist, the radial data is much better behaved than the axial data.