Follow Focus Gear - LOMO Prime Lens
thingiverse
A follow focus gear designed specifically for LOMO prime lenses replaces the original 0.5mm pitch gears with industry-standard 0.8mm gears. The unique design enhances contact area significantly, from a slim 0.5mm to a full 10mm. Given the variations in lens construction, three versions of the design are available: one with 3 screws and two others with 4 screws. A variant is also designed to accommodate lenses equipped with bayonet mounts, potentially streamlining the installation process. Installation can typically proceed without detaching the lens mount, as long as the original focus ring can be removed via the same method. However, for users unfamiliar or uncomfortable with disassembling their camera's optical system, seeking professional assistance is advisable. This project was modeled in FreeCAD, and the source files are available on Github at https://github.com/fdiebel/lomo-primes-ff
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