Vizelex ND Throttle Lens Mount Adapter - Compatible with Pentax 6x7 (P67, PK67) Mount SLR Lenses to Fujifilm G-Mount Mirrorless Digital Camera with Built-In Variable ND Filter (2 to 8 Stops) snx but not limited to):

but not limited to):

Dimensions¹ 20" 20 x 20 x 19 in (51 x 51 x 48

but these will also benefit less from extension tubes

977 Pitch) Leica Thread Mount Lenses to Sony E-mount mirrorless cameras

Vizelex ND Throttle Lens Mount Adapter - Compatible with Pentax 6x7 (P67, PK67) Mount SLR Lenses to Fujifilm G-Mount Mirrorless Digital Camera with Built-In Variable ND Filter (2 to 8 Stops) snx but not limited to):Description Specs Compatibility Notes Product Highlights: Mounts a Vast Range of Vintage Workhorse Lenses to Fujifilm G Mount GFX Cameras Built in Variable Neutral Density Filter ND4 256 (2 8 stops) for easy and convenient image control over any lens that you attach Enhanced craftsmanship and high tolerance construction for demanding professionals; infinity focus or beyond guaranteed Precise fit, solid all metal connection with chrome plated brass