Nikon D80 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-

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

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

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

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.*

allows

h a n d h e l d

shooting

dusk,

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