Nikon 20mm 1/2.80 Instruction Manual - Page 3

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English

Specifications and designs are subject to change without any notice or obtigation

on the part of the manufacturer

Thank you for purchasing the

Nikkor 20mm f/2.8D

lens, Before using your new lens, read the following

information carefully so you can get the most out of

your lens now and for years to come, Object distance

information can be transferred to the camera body

when the lens is used with any Nikon model with 3D

Matrix Metering capability,

• Autofocus is not possible with Nikon's 060 and 040-Series cameras,

When using the lens with these models, set camera focus mode to M,

Important!

• Be careful not to soil or damage the CPU contacts

• Do not attach the following accessories to the lens, as they

might damage the lens CPU contacts: Auto Extension Ring

PK·1, PK-11 (use PK-11A), K1 Ring and Auto Ring BR·2 (use

BR·2A)

• Other accessories may not be suitable for use with certain

camera bodies, For details, carefully read the camera

instruction manual

• This lens cannot be used with the AF Finder DX-1 attached

to the Nikon F3AF camera,

Minimum aperture lock lever

(Fig,

See the reverse,)

For programmed auto or shutter-priority auto shooting, use the

minimum aperture lock lever to lock the lens aperture at f/22,

1. Set the lens to its minimum aperture (fI22)

2, Slide the lock lever in the direction of the aperture ring so

that white dot on the tab aligns with the orange dot.

To release the lock, slide the lever in the reverse direction,

Getting good results with autofocus

Refer to "Notes on using wide or super-wide angle AF Nikkor

lenses" on the back of this sheet.

Recommended Focusing Screens

(See the

reverse)

Various interchangeable fOCUSing screens are

available for Nikon F6, F5, F4- and F3-series cameras

to suit any type of lens or picture-taking situation,

Those which are recommended for use With thiS lens

are listed in the table (see the reverse), For details,

also refer to the specific camera's instruction manual.

Lens care

• Clean lens surface with a blower brush. To remove dirt and

smudges, use a soft, clean cotton cloth or lens tissue

moistened with ethanol (alcohol) or lens cleaner. Wipe in a

circular motion from center to outer edge, taking care not

to leave traces and not to touch the other lens parts

• Never use thinner or benzine to clean the lens,

• To protect the lens surface from dirt or damage, the use of

an NC filter is recommended

all times, The lens hood

also helps to protect the lens,

• Attach both the front and rear lens caps when lens is not

in use,

• Do not splash water on the lens or drop it in the water

because this will cause it to rust and malfunction

• When not using the lens for a long time, store it in a cool,

dry place to prevent mold from growing, Also store the

lens away from direct sunlight or chemicals such as

camphor or naphthalene,

• Reinforced plastic is used for some parts in the lens unit;

to avoid damage, take extra care to never leave the lens in

an excessively hot place,

Optional Accessories

62mm screw·in filters

Flexible lens pouch CL·S2

Bayonet hood HB·4

Specifications

Focal length

Maximum aperture

Lens construction

Picture angle

Distance scale

Distance information

Aperture scale

Minimum aperture lock

Diaphragm

Exposure measurement

Mount

Attachment size

Dimensions

Weight

: 20mm

: f/28

: 12 elements in 9 groups

: 94" with 35 mm (135) format Nikon film-

SLR

cameras and Nikon FX format digital

SLR

cameras

70' with Nikon OX format digital

SLR

cameras

: Graduated in meters and feet from

0.25m (0,85ft) to infinity (00),

: Output of object distance information

to the camera body is possible,

: 1/28 to 1/22 on both standard and

aperture·direct·readout scales

: Provided

: Fully automatic

: Via full'aperture method for AI cameras

or cameras with CPU interface

system; via stop-down method for

other cameras

: Nikon bayonet mount

: 62mm (P=0,75mm)

: Approx. 69mm dia. x 42.5mm

extension from the camera's lens

mounting flange; overall length is

approx. 52mm

: Approx, 270g (9.5 oz)