Pentax Helicoid Extension Tube (43.7-67.4MM) for Pentax 645 P/MF

Used Pentax Helicoid Extension Tube (43.7-67.4MM) for Pentax 645 P/MF


Condition: Excellent Plus


  • Function: Increases the distance between the camera and the lens allowing for closer focusing and higher magnification ratio
  • Compatibility: Pentax 645/67/6×7
  • Step Range: 43.7 – 67.4mm
  • Note: Use of step-down rings can cause vignetting

Out of stock

Product Description

Helicoid Extension Tube 645: Adjustable magnification by means of internal helicoid, can be used in Aperture Priority AE mode. Magnification can be adjusted from 0.57X to 1.06X with standard 75mm lens attached in normal position, or from 1.93X to 2.35X with 55mm lens attached in reverse.Accessories Included:

  • Lens Caps


Additional Information

Product Condition

“like new minus” – the rating of the equipment is at 97 to 99 percent of original condition. only the closest inspections will reveal slight wear. perfect glass, but the box and accessories are usually not included.
“excellent plus” – rates 90 to 96 percent of original condition. exceptionally nice, but may have slight wear on finish visible only under close inspection. glass will be very clean.
“excellent” – 80 to 89 percent of original. shows moderate wear for the age of the item, with the possibility of small dings or blemishes. glass may have slight blemishes but will not affect picture quality.
“bargain” – items are 70 to 79 percent of original condition. more than average wear for the age of the item, and may have dents, dings or finish loss. glass may have marks or blemishes, but should not affect picture quality.
“ugly” – the look only a photographer would love. “ugly” means equipment is rough, with multiple impressions in metal, excessive finish loss and brassing. glass will have marks, fungus and/or haze which will affect picture quality.


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