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Sigma 20mm F1.8 EX DG ASP RF Lens For Pentax K Mount

Model Specifications

Brand Sigma Model 20mm F1.8 EX DG ASP RF
Mount Pentax K Max FLM 1X
Focal Length 20mm View Angle 94°
Max ApertureF1.8Min ApertureF22
Min Focus20cmMagnification0.25X
Filter Size82mm Aperture Blades9
Size (D x L)89 x 87mm Weight520g
TiltN / A ShiftN / A
StabilizationNo ProtectionNone
Zoom Mechanism N / A Focus Mechanism Internal
Focus Motor Internal Focus Drive AF with MF switch
Hood BayonetFeatures
Perspective RectilinearIntroduced

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Sigma 20mm F1.8 Facts

Sigma 20mm F1.8 EX DG ASP RF
Fixed focal-length. No zoom.Fixed focal-length. No zoom.Rectilinear are normal lenses that show straight lines as straight lines.Rectilinear are normal lenses that show straight lines as straight lines.
20mm Focal-Length F1.8 Constant Aperture
82mm Filter Thread AF with MF switch
Pentax K Mount 1 Max Crop-Factor
520g Lens Weight 89 x 87mm (D x L)
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