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1. Focusing Range: The length of the focusing distance is 17-31mm, providing a 14mm adjustment distance for lens focusing.
2. Extinction : The inner wall of the focusing cylinder is treated with extinction to avoid the impact of reflected light on the imaging.
3. Great Choice: Provides a focusing system for lenses that do not have a focusing system, ideal for zooming in or changing lenses.
4. Premium Materials: Made of aluminum alloy, black anodized, sturdy, durable, long service life and excellent hand feel.
5. M77 Threaded Interface: Adopt general M77 threaded interface, strong versatility and convenient transfer.

Specification:
Item Type: Focusing Helicoid Adapter
Material: Aluminum Alloy
Colour: Black
Focusing Range: 17-31mm
Interface: Male Port: M77 Threaded Mount
Female Port: M77 Threaded Mount

Package List:
1 x

Focusing Helicoid Adapter