Nikon AF DC-Nikkor 135mm f/2D Brochure & Specs - Page 4
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Designed to be the best lenses in the world
ED glass —
ness and contrast even at
an essential element
their largest apertures. In this
of NIKKOR telephoto lenses
way,
NIKKOR's
lenses exemplify Nikon's pre-
Nikon developed ED
eminence in lens innovation
(Extra-low Dispersion)
and performance.
glass to enable the
Nikon Super
production of lenses
Integrated Coating
that
offer
superior
ensures exceptional
sharpness and colour
ED glass
performance
correction by minimising chro-
To enhance the performance
matic aberration.
Put simply, chromatic aber-
of its optical lens elements,
Nikon employs an exclusive
ration is a type of image
multilayer lens coating that
and colour dispersion that
helps reduce ghost and flare
occurs when light rays of vary-
to a negligible level.
ing wavelengths pass through
Nikon Super Integrated
optical glass. In the past, cor-
Coating achieves a number
recting this problem for tele-
photo lenses required special
of objectives, including min-
Secondary spectrum
imised reflection in the wider
wavelength range and superior
colour balance and reproduc-
tion, even with Zoom-NIKKOR
Normal glass
ED glass
lenses featuring a large num-
optical elements that offer
ber of elements. It is also effec-
tive in minimising ghost and
anomalous dispersion charac-
flare caused by internal reflec-
teristics — specifically calcium
fluoride crystals. However, fluo-
tions from the image sensors of
Nikon digital SLRs.
rite easily cracks and is sensi-
Also, Nikon's multilayer
tive to temperature changes
coating process is tailored to
that can adversely affect focus-
the design of each particular
ing by altering the lens' refrac-
lens. The number of coatings
tive index.
applied to each lens element
So Nikon designers and
engineers put their heads
is carefully calculated to
match the lens type and
together and came up with ED
glass used, and also to
glass, which offers all the bene-
fits, yet none of the drawbacks
assure the uniform colour bal-
ance
that
characterises
of calcium fluorite-based glass.
NIKKOR lenses. This results
With this innovation, Nikon
developed several types of ED
in lenses that meet much
higher standards than the
glass suitable for various lenses.
rest of the industry.
They deliver stunning sharp-
6
Nano Crystal
Nikon employs three
Coat
types of aspherical lens
ED-series
e l e m e n t s . P r e c i s i o n -
Nano Crystal Coat is
ground aspherical lens
an anti-reflective coat-
elements are the finest expres-
ing that originated in the devel-
sion
of
opment of NSR-series (Nikon
demanding extremely rigorous
Step and Repeat) semicon-
production standards. Hybrid
ductor manufacturing devices.
It virtually eliminates internal
lenses are made of a special
plastic moulded onto optical
lens element reflections across
glass. Moulded glass aspher-
a wide range of wavelengths,
and is particularly effective in
ical lenses are manufactured
by moulding a unique type of
reducing ghost and flare pecu-
optical glass using a special
liar to ultra-wideangle lenses.
metal die technique.
Nano Crystal Coat employs
Close-Range
multiple layers of Nikon's out-
Correction system
standing extra-low refractive
The Close-Range Correction
index coating, which features
ultra-fine crystallized particles
(CRC) system is one of
Aspherical lens elements
Nikon's most important focus-
of nano size (one nanometer
ing innovations, for it provides
equals one millionth of a mm).
superior picture quality at
Nikon now proudly marks a
close focusing distances and
world first by applying this
increases the focusing range.
coating technology to a wide
range of lenses for use in con-
With CRC, the lens ele-
ments are configured in a
sumer optical products.
Aspherical lens
"floating
elements
wherein each lens group
moves
independently
Nikon introduced the first
achieve
photographic
lens
with
ensures superior lens per-
aspherical lens elements in
formance even when shoot-
1968. What sets them apart?
ing at close distances.
Aspherical lenses virtually
The CRC system is used
eliminate the problem of
coma and other types of lens
in fisheye, wideangle, Micro,
and selected medium tele-
aberration — even when
photo NIKKOR lenses.
used at the widest aperture.
Internal Focusing
They are particularly useful in
(IF)
correcting the distortion in
Imagine being able to focus a
wideangle lenses. In addition,
use of aspherical lenses con-
lens without it changing in
size. Nikon's IF technology
tributes to a lighter and small-
enables just that. All internal
er lens design.
lens-crafting
art,
Aspherical lens
: Optical path of normal lens
: Optical path of aspherical lens
CRC
(AF 24mm f/2.8D)
element"
design
to
Focusing lens groups
focusing.
This
IF (AF-S 300mm f/2.8D IF-ED II)
RF (AF DC 135mm f/2D)
optical movement is limited to
AF Nikon camera bodies.
the interior of the nonextend-
This then makes possible
ing lens barrel. This allows for
advances like 3D Matrix
a more compact, lightweight
Metering and 3D Multi-Sensor
construction as well as a
Balanced Fill-Flash.
closer focusing distance. In
Note: D-type and G-type NIKKOR lens-
es provide distance information to the
addition, a smaller and lighter
following cameras: Auto exposure; F6,
focusing
lens
group
is
F5, F100, F90X, F80, F75, F70, F65, F60,
employed to ensure faster
F55, F50, PRONEA S, PRONEA 600i,
D3, D2 series, D1 series, D300, D200,
focusing. The IF system is
D100, D80, D70S/D70, D60, D50 and
featured in most NIKKOR
D40X/D40. Flash control; F6, F5, F100,
telephoto
and
selected
F90X, F80, F75, F70, D3, D2 series, D1
series, D300, D200, D100, D80,
NIKKOR zoom lenses.
D70S/D70, D60, D50 and D40X/D40.
Rear Focusing
Silent Wave Motor
(RF)
With Nikon's Rear Focusing
Nikon's AF-S technology is
(RF) system, all the lens ele-
yet another reason profes-
ments are divided into specif-
sional photographers like
ic lens groups, with only the
Cam for zoom mechanism
NIKKOR telephoto lenses.
rear lens group moving for
AF-S NIKKOR lenses feature
focusing. This makes autofo-
Nikon's SWM which converts
cusing operation smoother
"travelling waves" into rotation-
and faster.
al energy to focus the optics.
AF DC-NIKKOR lenses —
This enables smooth autofo-
unique NIKKOR lens-
cusing that's extremely accu-
es for unique portraits
rate and super quiet.
AF DC-NIKKOR lenses feature
M/A mode
exclusive
Nikon
Defocus-
image Control technology. This
AF-S NIKKOR lenses feature
allows photographers to control
Nikon's exclusive M/A mode,
the degree of spherical aberra-
that allows switching from aut-
tion in the foreground or back-
ofocus to manual operation
ground by rotating the lens' DC
with virtually no time lag —
ring. This will create a rounded
even during AF servo opera-
out-of-focus blur that is ideal for
tion and regardless of AF
portrait photography. No other
mode in use.
lenses in the world offer this
Vibration Reduction
special technique.
(VR)
Distance information
This innovative VR system
minimises image blur caused
D-type and G-type Nikkor
by camera shake, and offers
lenses relay subject-to-cam-
the equivalent of shooting at
era distance information to
a shutter speed four or three
stops faster.*
It
allows
h a n d h e l d
shooting
at
dusk,
at
night,
and
VR lens unit
even in poor-
ly lit interiors. The lens' VR
system also detects automat-
ically when the photographer
pans — no special mode is
required.
* As determined by Nikon perform-
ance tests.
DX NIKKOR
Compact and lightweight DX
Nikkor lenses featuring a
smaller image circle are spe-
cially designed and optimised
for Nikon D2-series, D1-
series, D300, D200, D80,
D100, D70S/D70, D60, D50
and D40X/D40 digital SLR
cameras. These are ideal
options for landscape pho-
tographers and others who
need to shoot expansive
scenes with Nikon DX-format
digital SLRs.
Note: We do not
recommend use
of DX Nikkor with
35mm (135) or
IX240
format
cameras.
SWM
Nikon
Technology
7