Sigma 20mm F1.8 EX Aspherical DG DF RF

mount: A-mount
prod. code: 411-205
EAN/UPC: 0085126411343
makernote ID: 25
format: Full frame
release year: 2000
status: Discontinued
D type lens: Yes
SLT compatible: Read this!
AF Drive: In Body
focus design: rear focus system
stabilisation: No
weather sealing: No
AF-D (a99 only): No
max. aperture: 1.8
min. aperture: 22
focal range(mm): 20
elements/group: 13/11
angle of view: 94,4
aperture blades: 9
min. focus distance(mm): 200
filter rotate focusing: No
max. magnification: 0.25x (1/4)
filter diameter(mm): 82
hood: flower
color: black
length(mm): 87
weight(g): 520
standard accessories: caps, hood, case

dyxum note
Lenses with serial number starting with 1 may not work on digital body and needs to be rechiped by sigma.
user review ratings
overall: 4.32
sharpness: 4.35
color: 4.50
build: 4.56
distortion: 4.26
flare control: 3.94
total: 34 reviews

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Sigma 20mm F1.8 EX  Aspherical DG DF RF image 1Sigma 20mm F1.8 EX  Aspherical DG DF RF image 2Sigma 20mm F1.8 EX  Aspherical DG DF RF image 3

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manufacturer description

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 it’s important to have a wide angle lens with excellent optical performance and Sigma’s aspherical lens technology provides high quality images for the serious shooter.

Sigma’s 20mm lens has a field of view of 94.5º 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 “stitched” 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. - Home of the alpha system photographer
In memory of Cameron Hill - brettania