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Sigma 20mm f/1.8 EX Aspherical DG DF RF Prime Lens for Pentax

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Manufacturer # 411109

Our Stock # SG411109

This Sigma 20mm F1.8 EX DG Aspherical RF is a unique Sigma offering with an aperture of F1.8 making it the fastest super wide angle lens available from any camera or lens manufacturer. For the scenic or landscape photographer itÕs important to have a wide angle lens with excellent optical performance and SigmaÕs aspherical lens technology... read more

Sigma 20mm f/1.8 EX Aspherical DG DF RF Prime Lens for Pentax

Price: $723.35

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This Sigma 20mm F1.8 EX DG Aspherical RF is a unique Sigma offering with an aperture of F1.8 making it the fastest super wide angle lens available from any camera or lens manufacturer. For the scenic or landscape photographer itÕs important to have a wide angle lens with excellent optical performance and SigmaÕs aspherical lens technology provides high quality images for the serious shooter. SigmaÕs 20mm lens has a field of view of 94.5¼ and yet provides for a close focusing lens-to-subject distance of only 2.6 inches. Such performance parameters provide great creative freedom to the photographer who wishes to exploit its capabilities for juxtaposing very near subject with the surrounding background. This extreme wide angle view also makes this lens ideal for crating ÒstitchedÓ panoramic scenes for dramatic effect. The architectural photographer will find this lens attractive for shooting building interiors and the photojournalists will find its fast speed a life saver in low light conditions.


Lens Construction

13 Elements in 11 Groups


Angle of View

94.5¼


Number of Diaphragm Blades

9


Mininum Aperture

f22


Minimum Focusing Distance

20 cm / 7.9 in


Filter Size (mm)

82


Maximum Magnifications

1:4


Dimensions

(Diameter x Length)

88.5 x 87 mm/3.5 x 3.4 in



Weight

520g / 18.3oz.


Corresponding Mounts

Sigma

ASP

RF

EX

DG


Nikon

ASP

RF

EX

DG

D


Canon

ASP

RF

EX

DG


Sony/Minolta

ASP

RF

EX

DG

D


Pentax

ASP

RF

EX

DG


ASP - Aspherical

RF - Rear Focus

EX - EX Lens

DG - DG for Digital

D - Distance Information Function

* Nikon Mount: NO built in motor lens: NOT compatible with D40, D40x, D60, D3000, D5000


* The appearance, specifications, and the like of the product are subject to change for improvement without notice.



  • Carrying case

  • Lens hood

  • Front & rear caps



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