Follow focus cog for Pentax 6X7 Takumar 35mm f4.5 medium format fish eye
Description
Today we will explore installing 0.8 gear to a Pentax 6X7 Takumar lens. The idea is to make this lens compatible with modern follow-focus motors that use the 0.8 gear ratio instead. This design is composed of three pieces to allow for the installation of the following focus in the Pentax 6x7. This is necessary due to the large front bulbous element present in this lens as it is typical for many fish eye lenses.
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