About the product
- Made of light-weight aluminum alloy
- Male thread: 42mm; female thread: 42mm
- The Length of this Helicoid Tube 12mm(Min) , 19mm (Max), it offers a total of 7mm Movement Distance for Lens Focusing.
- Work With M42 Screw Mount Lenses, Such As Carl Zeiss, Pentax Takumer Lens. If you want to use 39mm Enlarger Lens with this Focusing Helicoid, you need an additional 39mm-42mm adapter.
- Very Useful for Lenses Without Focus Ring. It Could Be Used As Macro Barrel, and Offers Fine Focus Control for Macro Photography.
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