Senin, 28 Maret 2011

AF-S DX Zoom-Nikkor 12-24mm f/4G IF-ED (2.0x)

Ultra-wideangle zoom lens for exclusive use with Nikon DX-Format digital SLR
Click to view lens specs
  • SWM
  • ED
  • AS
  • M/A
  • IF

Key Features

  • Specially designed and optimized for Nikon digital SLRs
  • Built-in SWM for ultra-fast, ultra-quiet AF operation
  • High optical performance by aspherical lenses and ED glass elements
  • M/A mode for quick switching between autofocus and manual operation
  • Lightweight and compact design

Specifications

Focal length
12-24mm
Maximum aperture
f/4
Minimum aperture
f/22
Lens construction
11 elements in 7 groups (2 ED glass elements and 3 aspherical lenses)
Picture angle
99° - 61°
Closest focusing distance
0.3m (through the entire focal range)
Maximum reproduction ratio
1/8.3
No. of diaphragm blades
7 (rounded)
Filter/attachment size
77mm
Diameter x length
(extension from lens mount)
Appproximately 82.5 x 90 mm/3.2 x 3.5 in.
Weight
Approximately 465 g/16.4 oz.
Supplied accessories
77mm snap-on front lens cap LC-77, Rear lens cap LF-1, Bayonet Hood HB-23

MTF Chart


Wide

Tele

Spatial Frequencies
S: Sagittal
M: Meridional
10 lines/mm
30 lines/mm

Lens Construction



  : Aspherical lens elements
  : ED glass elements
  : Super ED glass elements

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