Sigma 18mm F3.5 Zen

mount: A-mount
prod. code: data needed
EAN/UPC: data needed
makernote ID: 25661
format: Full frame
release year: 1992
status: Discontinued
specification
D type lens: No
SLT compatible: Read this!
AF Drive: In Body
focus design: Internal focusing
stabilisation: No
weather sealing: No
AF-D (a99 only): No
max. aperture: 3.5
min. aperture: 22
focal range(mm): 18
elements/group: 10/9
angle of view: 100
aperture blades: 6
min. focus distance(mm): 245
filter rotate focusing: No
max. magnification: 0.12x (1/8.3)
filter diameter(mm): 72
hood: Petal
color: Black
length(mm): 57.5
weight(g): 354
standard accessories: front and rear caps, plastic petal hood
features: Lens hood is lined with a black velvet-like coating to reduce lens flare.

user review ratings
overall: 4.34
sharpness: 3.94
color: 4.50
build: 5.00
distortion: 3.88
flare control: 4.38
total: 8 reviews

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Sigma 18mm F3.5 Zen image 1

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manufacturer description

"An ultra wide angle, super sharp, super performance lens with a 100 degree field of view.
At 100 Degree it covers an extended field of view even wider than a right angle. It is ideal for expanding your point of view and your photo horizons. Advanced integral focusing combined with a float element system minimizes aberrations for sharp, high contrast, high resolution photography through the entire shooting range- from 9.8” (25cm) extreme close-ups, to infinity. The sophisticated internal focusing mechanism allows this 18mm F3.5 lens to be extremely compact for maximum maneuverability. Whisper quiet and silky smooth, it uses a computer-aided designed optical formula for minimum distortion.
The unique Sigma Zen matte finish gives a sure, comfortable grip and helps prevent reflection while resisting scratches."

Thanks to Desiree Gage at Sigma USA for providing additional information.

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