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K&F Concept PK to FX Lens Mount Adapter, Compatible with Pentax K PK Mount Lens and Compatible with Fuji X Series Mount Mirrorless Cameras: Amazon.co.uk: Electronics & Photo
Pentax K lens on Fujifilm X body: Aperture does not change: Fujifilm X System / SLR Talk Forum: Digital Photography Review
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K&F Concept adapter Pro for Pentax K PK lens to Fujifilm Fuji X S10 XT200 XPro3 X T2 X T20 X T3 X T30|Lens Adapter| - AliExpress
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