Pentax DA 14mm f/2.8ED (IF), DA 16-45mm f/4ED AL, DA18-55mm f/3.5-5.6 AL, DA 40mm f/2.8 Limited Operating Manual

smc PENTAX-DA
INTERCHANGEABLE LENS

OPERATING MANUAL

FOREWORD

Thank you for purchasing the smc PENTAX-DA lens.

This smc PENTAX-DA lens features a “Quick-Shift Focus System” that lets you finely
adjust the focus manually after the focus has been adjusted in addition to allowing
you to enjoy taking pictures using autofocus or manual focus by mounting on the
PENTAX -series digital SLR camera. For further information on the use of this
function, refer to p10.

This lens can be used only with PENTAX -series SLR cameras. It is not
compatible with film SLR cameras.

Please read this operating manual carefully before using the lens to ensure that it is
used properly. In addition, also refer to your camera’s operating manual.

In this operating manual, “smc PENTAX-DA lens” is shortened to “DA lens.”
Illustrations shown herein may differ from the actual appearance.

FOR SAFE USE OF YOUR LENS

1

Although we have carefully designed these lenses for safe operation, please pay special
attention to items marked with the following symbols when using this product.

WARNING This symbol indicates precautions that if not followed,

could result in serious injury to the user.

CAUTION This symbol indicates precautions that if not followed,

could result in minor or medium injury to the user or
damage to the equipment.

WARNING

• Never look at the sun through the lens or camera. Serious damage to the retina or
total loss of eyesight may occur.

CAUTION

• Do not leave the lens in direct sunlight without lens caps. Direct sunlight passing
through the lens will be intensified, and should it focus on flammable materials, fire
may occur.

PRECAUTIONS AND LENS MAINTENANCE

2

1. Storage and mildew prevention

•

Take the lens out of the protective case or camera bag, and store it in a dry, well-ventilated place.

•

Avoid storing the lens in a poorly ventilated location such as a closet, wardrobe, drawer, vehicle, or
where insect repellent or medicine is kept.

•

Avoid storing the lens in areas of high temperature and humidity, where there is a risk of mildew growth.
Store the lens with a desiccant in a dry cabinet, airtight container, or plastic bag. (Leaving a saturated
desiccant in the storage container can cause damage to the lens. Be sure to read the instructions that
come with the desiccant before use.)

2. The lens is not waterproof. When using the lens in a rain or mist, be careful not to allow it to get wet.

3. Never use any organic solvent such as thinner, alcohol, or benzine, etc. to remove dust on the lens.

4. The lens is a precise optical instrument. Be careful not to let it fall, or subject it to strong shocks or
pressure. Use a cushion or similar pad to protect the lens from the vibrations of motorcycles or other
vehicles, boats, etc.

5. Avoid subjecting the lens to rapid changes in temperature, otherwise condensation can occur on both
the inside and the outside of the lens. Put the lens in a plastic bag or camera bag, and take it out after
the lens has reached ambient temperature.

6. When the lens is not attached to the camera body, attach both the supplied lens cap and lens mount
cap to protect it from dust.

7. Do not leave the camera with the lens cap off attached to a tripod or other rigid camera support. The
inner parts of the camera can be damaged by direct sunlight.

8. Have the lens inspected by a dealer every one or two years to maintain its high performance.

CONTENTS

3

°

FOREWORD

°

FOR SAFE USE OF YOUR LENS ···························································································· 1

°

PRECAUTIONS AND LENS MAINTENANCE ········································································· 2

°

smc PENTAX-DA LENS ·········································································································· 4

• About the DA Lens Mount ····································································································· 5

°

MOUNTING AND REMOVING THE LENS ·············································································· 6

°

LENS CAP ······························································································································· 7

°

FOCUSING ······························································································································· 8

• Changing the Focus Mode ···································································································· 8

• Using Autofocus ···················································································································· 8

• Using Manual Focus ··············································································································9

• Using the Quick-Shift Focus System ( -series cameras only) ································· 10

• How to use the Quick-Shift Focus System ·········································································· 10

• Precautions on close-distance scale ··················································································· 12

°

ZOOM LENS··························································································································· 13

• About the zoom ring·············································································································14

°

ATTACHING THE LENS HOOD ····························································································· 15

• Screw-on Type····················································································································· 15

• Bayonet Type······················································································································· 15

• About the PL filter window ··································································································· 16

°

FILTERS ································································································································· 18

°

PRECAUTIONS WHEN USING THE LENS WITH A FLASH ················································· 20

• Built-in Flash ························································································································ 20

• External Flash ······················································································································ 20

• Compatibility of DA Lenses with the Built-in Flash ······························································ 21

°

MAIN SPECIFICATIONS ········································································································ 22

smc PENTAX-DA LENS

4

Focusing ring

Distance scale
window

Depth-of-field scale

Mounting index

Lens hood
attaching index

Distance scale

Distance index

Depth-of-field scale

Note:

The DA lens does not have an aperture ring. Aperture settings are controlled
automatically as if set to the auto “A” position, so accessories without an auto “A”
setting cannot be used with this lens.

5

AF coupler

Lens-information
contacts

About the DA lens mount

The DA lens is an interchangeable lens specifically designed for the PENTAX - series
digital SLR camera.
The KAF -mount of the DA lens is similar to conventional SLR lenses, but the DA lens cannot
be used on 35 mm SLR cameras.

KAF-mount

CAUTION

Be careful not to damage or dirty the lens-information contacts and AF coupler
on the mount surfaces of the camera and lens. Otherwise, failure or
malfunction may result.

1. To mount the lens on the camera body

Align the red dots on the lens and camera body, and then turn the lens clockwise until
it clicks into place.

✍

Memo:

• Do not hold down the lens unlock button while mounting the lens, otherwise the lens will

not be properly mounted.

• After mounting the lens, gently turn the lens counterclockwise to make sure it is locked

in place.

2. To remove the lens

Hold down the lens unlock button on the camera body and turn the lens
counterclockwise.

MOUNTING AND REMOVING THE LENS

6

1 2

1. Take off the lens cap by pressing the two tabs inward as shown above.

2. Attaching the dedicated lens cap to DA 40mm f/2.8 Limited

First screw the dedicated hood onto the front of the lens, then screw on the lens cap.

✍

Memo:

• When not using the lens, be sure to attach the lens cap.

LENS CAP

7

1

22