Nikon, Nikkor, 18–140mm f/3.5-5.6G ED VR AF-S DX Lens


Nikkor 18-140mm f/3.5-5.6 G ED VR AF-S DX Lens

This new 18-140mm DX format lens appears to be a very high performance lens for an f/3.5-5.6 aperture lens. It is effectively a 7.8 times normal zoom lens, covering a very wide focal length range from 18 to 140 mm, the angle of view with this lens is equivalent to a lens with a focal length of 27 to 210 mm in the FX system, 35mm format, this is quite a nice range indeed.

The lens has one ED glass element and one aspherical lens element and includes VR, Vibration Reduction to help minimizes camera shake by offering a shutter speed equivalent to 4.0 stops faster with the VR functionality activated.

The lens has a Silent Wave Motor, SWM incorporated in its design to ensure quiet and fast AF operation.

The basic lens construction is shown in the following plan.

Lens Construction Nikkor 18-140 f/3.5-5.6 G ED VR

The MTF charts for this lens are as follows and generally it indicate a very sharp lens from wide angle to the telephoto end. Looking at the MTF charts this lens looks to be one of the best f/3.5-5.6 lenses around.

Perhaps there is a new very high pixel density DX camera coming from Nikon in the very near future to get the full capability from this lens.

Nikkor 18-140 f/3.5-5.6 G ED VR MTF Chart

It will be interesting to see what is in planned by Nikon for any future high level Nikon DX cameras.

Specifications

  • Type G, AF-S, DX lens with built-in CPU and F mount
  • Focal length, 18-140 mm
  • Maximum aperture, f/3.5-5.6
  • Minimum aperture, f/22-38
  • Lens construction, 17 elements in 12 groups, includes 1 ED lens element and 1 aspherical lens element
  • Angle of view, 76° – 11°30′
  • Nikon internal focusing system with autofocus controlled by a Silent Wave Motor and separate focus ring for manual focus
  • Minimum focus distance, 0.45 m, 1.48 ft from the focal plane at all zoom positions
  • Maximum reproduction ratio, 0.23x
  • 7 rounded diaphragm blades for excellent bokeh
  • Diaphragm is fully automatic
  • Aperture range,
    • 18 mm focal length, f/3.5-22
    • 140 mm focal length, f/5.6-38
  • Filter size, 67 mm, P = 0.75 mm
  • Dimensions, 78 mm maximum diameter, 97 mm distance from camera lens mount flange
  • Weight, 490 g, 17.3 oz.
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