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sl2n-top

kosei

Focal Length : 20mm
Aperture Ratio : 1:3.5
Minimum Aperture : F22
Lens Construction : 6 groups 9 elements
Angle of View : 94°
Aperture Blades : 9
Minimum Focus : 0.2m
Filter Size : φ52mm
Diameter x Length : φ63.6mm x 28.8mm (Ai-S)
Diameter x Length : φ70mm x 31.2mm (EF)
Weight : 202g (Ai-S)
Weight : 240g (EF)
Mount : Ai-S / EF

lh28n

Optional Hood : LH-20N
( For full frame)

lh28n

Optional Hood : LH-28N
( For APS-C size)

kosei

Focal Length : 28mm
Aperture Ratio : 1:2.8
Minimum Aperture : F22
Lens Construction : 6 groups 7 elements
Angle of View : 74.8°
Aperture Blades : 9
Minimum Focus : 0.22m
Filter Size : φ52mm
Diameter x Length : φ63.6mm x 24.5mm (Ai-S)
Diameter x Length : φ70mm x 27mm (EF)
Weight : 180g (Ai-S)
Weight : 230g (EF)
Mount : Ai-S / EF

lh28n

Optional Hood : LH-28N
( For full frame)

lh28n

Optional Hood : LH-40N
( For APS-C size)

koseiclose-up
Dome shape hood and
close up lens are included.

Focal Length : 40mm
Aperture Ratio : 1:2
Minimum Aperture : F22
Lens Construction : 5 groups 6 elements
Angle of View : 57°
Aperture Blades : 9
Minimum Focus : 0.38m (with close up lens 0.25m)
Filter Size : φ52mm
Diameter x Length : φ63.6mm x 24.5mm (Ai-S)
Diameter x Length : φ70mm x 27mm (EF)
Weight : 180g (Ai-S)
Weight : 230g (EF)
Mount : Ai-S / EF

58sl2n

kosei

Focal Length : 58mm
Aperture Ratio : 1:1.4
Minimum Aperture : F16
Lens Construction : 6 groups 7 elements
Angle of View : 40°
Aperture Blades : 9
Minimum Focus : 0.45m
Filter Size : φ58mm
Diameter x Length : φ65.9mm x 47.5mm (Ai-S)
Weight : 320g (Ai-S)
Mount : Ai-S

 Optional hood : LH-58N