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Sigma 4.5mm F2.8 EX DC HSM Circular Fisheye Lens For Pentax K Mount

Model Specifications

Brand Sigma Model 4.5mm F2.8 EX DC HSM Circular Fisheye
Mount Pentax K Max FLM 1.5X
Focal Length 4.5mm View Angle 180°
Max ApertureF/2.8Min ApertureF/22
Min Focus13.5cmMagnification0.16X
Filter SizeNone Aperture Blades6
Size (D x L)76 x 78mm Weight470g
TiltN / A ShiftN / A
Stabilization None ProtectionNone
Zoom Drive N / A Focus Drive AF with MF switch
Zoom Mechanism N / A Focus Mechanism Internal
Hood No Focus Motor Super Sonic
Perspective Circular FisheyeIntroduced
Features

Accepts gel filters.

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Sigma 4.5mm F/2.8 Facts

Sigma 4.5mm F2.8 EX DC HSM Circular Fisheye
Fixed focal-length. No zoom.Fixed focal-length. No zoom.Fisheye Lens. Shows straight lines as curves.Fisheye Lens. Shows straight lines as curves.
4.5mm Focal-Length F/2.8 Constant Aperture
No filter thread AF with MF switch
Pentax K Mount 1.5 Max Crop-Factor
470g Lens Weight 76 x 78mm (D x L)
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