This is the widest lens for Pentax 6X7/67 system. It covers 180° field of view having special distortion effect herewith. The Fisheye lens has no any filter thread. But it has built-in filters instead: UV, Y2, O2 and R2. They should meet most needs in black and white photography. However the lens accepts gelatin filters which are mounted with special built-in clip in the rear of the lens.

Variants

Fisheye had never been produced so much as other lenses. But it is not a problem to get it. However, the single coated version of this lens is rare. It’s really hard to find it.

Different generations of the same lens: Super-Multi-Coated FISH-EYE-TAKUMAR/6X7 1:4.5/35 and SMC PENTAX 67 FISH-EYE 1:4.5 35mm.

Different generations of the same lens: “Super-Multi-Coated FISH-EYE-TAKUMAR/6X7 1:4.5/35” and “SMC PENTAX 67 FISH-EYE 1:4.5 35mm”

Model Weight Year
FISH-EYE-TAKUMAR/6X7 1:4.5/35 920g 1969
Super-Multi-Coated FISH-EYE-TAKUMAR/6X7 1:4.5/35 920g 1971
SMC PENTAX 67 FISH-EYE 1:4.5 35mm 900g 1989

Images

Built-in filters: UV, Y2, O2 and R2

Built-in filters: UV, Y2, O2 and R2


Diaphragm unit has eight aperture blades. Front and rear view displayed

Diaphragm unit has eight aperture blades. Front and rear view displayed


Built-in filters selection ring and the clip for slip-in gelatin filters in the rear of the lens

Built-in filters selection ring and the clip for slip-in gelatin filters in the rear of the lens


Dedicated caps are interchangable between different generations of the lens and do fit Fisheye only

Dedicated caps are interchangable between different generations of the lens and do fit Fisheyes only

Lens data

  • Focal length: 35mm
  • 35mm equivalent: 18mm
  • Optical formula: 11 elements, 7 groups
  • Field of view: 180°
  • Mount: inner bayonet
  • Diaphragm: automatic
    • Aperture range: 4.5 ~ 22
    • Aperture blades: 8
  • Close distance: 45cm
    • Magnification: 0.09×
    • Picture area: 556×778mm
  • Filter: built-in (UV, Y2, O2, R2), slip-in
  • Hood: not possible
  • Dimensions: 102×73mm
Fisheye lens formula. Green line for built-in location

Fisheye lens formula. Green line for built-in filters location