Copyright © RICOH IMAGING COMPANY, LTD. 2015
DFA150450EN
F.O.M. 01.05.2015 Printed in Europe
OPERATING MANUAL
Thank you for purchasing the HD PENTAX-D FA 150-450mm F4.5-5.6ED DC AW lens.
This lens is an interchangeable lens for PENTAX SLR cameras. Its image circle covers
the 35 mm film format, and it also obtains optimum image clarity with PENTAX digital 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 operating manual.
To use this lens, please keep the firmware of the camera up to date.
• Illustrations shown herein may differ from the actual appearance.
Specifications and external dimensions are subject to change without
notice.
Refer to your camera operating manual for details about mounting and
removing the lens.
Although we have carefully designed this lens for safe operation, please pay special
attention to items marked with the following symbols when using the lens.
This symbol indicates precautions that if not followed, could result in
serious injury to the user.
This symbol indicates precautions that if not followed, could result in
minor or medium injury to the user or damage to the equipment.
FOR SAFE USE OF YOUR LENS
Warning
Never look at the sun through the lens mounted on the camera for a long time. Serious
damage to your eyes or total loss of eyesight may occur, particularly when looking
directly through the lens.
Caution
Do not leave the lens in direct sunlight without a lens cover or lens cap. Direct sunlight
passing through the lens will be intensified, and should it focus on flammable
materials, fire may occur.
Warning
Caution
Precautions When Using the Lens
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 place 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 (anti- mildew agent) in a dry
cabinet, airtight container, or plastic bag.
Precautions and lens maintenance
• Never use any organic solvent such as thinner, alcohol, or benzine, etc. to remove
dust on the lens.
• 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, automobiles, boats, etc.
• Avoid subjecting the lens to rapid changes in temperature, otherwise condensation
can occur both inside and 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.
• 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.
• 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.
* Have the lens inspected by a dealer every one or two years to maintain its high performance.
Features of This Lens
• This lens uses our proprietary multi coating: "HD Coating (High Definition Coating)",
which has higher transmission of light with less reflection than existing coatings.
This coating prevents flare and realizes to achieve image quality with excellent
contrast.
• Equipped with "Quick-shift Focus System" (can be switched with the focus mode
switch), you can focus manually even while autofocus is operating, not just after
autofocusing.
• Circular aperture (up to F8) keeps light sources and other fuzzy points perfectly
round.
• This lens has a dust-proof and water-resistant construction with each part
individually sealed.
• SP (Super Protect) coating applied to the front surface of the lens to effectively
repel water and grease and easily wipe off dust and stain.
• Equipped with the preset button and AF button to allow expansion of autofocus
functions (*) by switching modes.
"AF Button and Preset Button" (reverse side)
(*) Available when using with cameras that support expanded autofocus functions.
For details of the compatible cameras, refer to our website below.
http://www.ricoh-imaging.co.jp/english/products/lens/k/telephoto/hdpentax-dfa-150-
450/
Names of Parts
* This 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.
About the Lens Mount
This “K
AF3
-mount” enables autoexposure, and
autofocus operated by a DC motor in the lens.
When using the camera that does not support
an internal motor, autofocus is not available.
9 8
7
2
1
3
5 6
4
16
18
17
15
12
14
11
10
13
1
Front-ring thread
10
Lens mount
2
Zoom ring
11
Mounting index
3
Focal length scale
12
Zooming index
4
Focus mode switch
13
Zoom lock switch
5
Focus range limiter
14
Lens hood attaching index
6
Focusing ring
15
Lens hood
7
Camera orientation lock screw
16
AF button*
8
Mode selector switch
17
Tripod mount
9
Preset button
18
Mounting screw
* Mounted in four locations at 90° intervals
CAUTION
Be careful not to damage or dirty the lens information
contacts and the power supply contacts on the mount
surface of the lens. Otherwise, failure or malfunction
may result.
K
AF
3
-mount
Lens information
contacts
Power supply
contacts
About the Lens Hood
Using a lens hood is recommended to block stray light from entering the lens.
The internal reflection of stray light degrades image quality.
<How to attach>
Align the index on the lens hood with the attaching index on the lens, and push
both parts straight toward each other. Attach the lens hood on the lens by turning
the hood in the clockwise direction, as viewed from the front of the lens, to lock it
until it clicks into position.
* When the lens hood is not in use, it can also be turned around and attached in
the reversed position.
The included lens hood has a PL filter window which
facilitates the manipulation of the circular polarizing filter
when the lens hood is attached.
<How to use>
1. Remove the PL filter window cap by sliding it in the
direction as shown in the illustration.
2. Turn the outer rim of the circular polarizing filter from
the PL filter window as shown in the illustration.
3. Attach the PL filter window cap.
* When shooting, be sure the PL filter window cap is in
place to achieve maximum effect of the lens hood.
About Lens Filters (commercially available)
Screw a commercially available 86 mm diameter filter to the front of the lens.
About the Zoom Lock Switch
This lens is equipped with a zoom ring lock. This prevents
the lens from extending under its own weight while you
are carrying the camera.
Set the zoom ring to the shortest focus (150 mm), move
the lock switch in the direction of the arrow. The lock is
engaged and the zoom ring is immovable when the red
line is visible.
CAUTION
• Since a filter becomes a part of the optical system when attached to the lens, handle
it with due care to protect it from dust, dirt and scratches.
• Use a circular polarizing filter if you attach a filter to a PENTAX digital SLR camera.
If you use a normal polarizing filter, exposure and autofocus are less-accurate.
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