Meike Cinema Lens 50mm T2.2 for Micro Four Thirds brand_Tamron but for a 600mm lens

but for a 600mm lens

with smooth geared focusing and a geared

and it feels like you're some kind of Terminator*

with paint and finish wear from normal use and handling

This extension tube for LTM/39mm thread mount Summer & Elmar 5cm lenses is designed to provide 1:3 magnification

Meike Cinema Lens 50mm T2.2 for Micro Four Thirds brand_Tamron but for a 600mm lensThe Meike Cinema Lens 50mm T2. 2 is a compact, manual focus lens for Micro Four Thirds. Designed for video use, with geared focus and aperture controls and a 77mm filter thread shared with other Meike lenses. Nevertheless, there's nothing stopping you from using this for stills, if you want. In excellent condition, with clean glass and only minor cosmetic wear.