About this product
Part Number: 7840
Extremely thin M42 helical focuser suitable for use with various lens system with a suitable camera lens mount available separately.
6mm of focusing travel.
Lens side threads are M42P1 female and camera side is M42P1 male.
Overall optical path length 11-17mm (+ 5mm M42 male threads).
Maximum outer diameter 60mm, minimum inner diameter 39mm.
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