The FEF18 places fixed control knobs on the left and right sides of a single positioning axis. Either control adjusts the same rail, allowing a natural wrist position on either side of the camera.
One axis, accessible from either side
A 1:1 bevel-gear transmission drives the rail with a 4 mm screw lead. The travel range is 120 mm. The side controls are not independent axes and do not provide different gear ratios. The mechanism is maintenance-free.
Position holding and mounting
For horizontal adjustment, the lock may remain released. In vertical use the carriage may creep; engage the lock after positioning and release it before adjusting again.
The upper Arca-type clamp can be removed and refitted at 90°. The bottom offers an Arca-type profile and three 1/4-inch threaded mounting holes.
Manual focus stacking
Move the camera in controlled steps, expose a sequence with overlapping focus regions, then combine the frames in post-processing. Step size depends on magnification and depth of field.
Specifications
| Travel | 120 mm |
| Screw lead | 4 mm per revolution |
| Transmission | 1:1 bevel gears |
| Dimensions | 208 × 88 × 35 mm |
| Weight | 398 g, excluding the quick-release plate |
| Load capacity | 10 kg |