01 STANDARD PRIME (8.5mm F1.9)
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.
01 STANDARD PRIME (8.5mm F1.9)
Thank you for purchasing a PENTAX lens.
This lens is an interchangeable lens specifically designed for the PENTAX digital cameras
with the Q-mount.
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.
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.
Never look at the sun through the lens. Serious damage to your eyes or total
loss of eyesight may occur.
• Illustrations shown herein may differ from the actual appearance.
• PENTAX is a trademark of HOYA CORPORATION.
Specifications and external dimensions are subject to change without notice.
Refer to your camera operating manual for details about the mounting and
removing the lens.
Do not leave the lens in direct sunlight without lens cap. Direct sunlight passing
through the lens will be intensified, and should it focus on flammable materials,
fire may occur.
Copyright © HOYA CORPORATION 2011
H01-201105 Printed in VietnamPhilippines
Precautions When Using the Lens
Main Specifications
„ Storage and mildew prevention
• Take the lens out of the protective case or camera bag, and store it in a dry, wellventilated 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 on both inside and outside of the lens. Put the lens in a plastic bag or
camera bag, and take it out after the lens temperature reaches the ambient level.
• When the lens is not attached to the camera body, attach both the supplied lens cap
and lens mount cover 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.
Focal length
Elements in groups
Angle of view
Mount type
Minimum focus distance
Maximum magnification
Filter size
Lens hood
Max. Diameter x Length
8.5mm (equivalent to approx. 47mm in 35mm format)
0.2m (0.66ft)
Approx. 0.05×
MH-RA 40.5mm (optional)
45.5mm × 23.0mm (1.8in × 0.9in)
Approx. 37g/1.3oz.
Built-in leaf shutter, Built-in ND filter
* Have the lens inspected by a dealer every one or two years to maintain its high performance.
Names of Parts
„ How to Attach the Lens Hood (optional)
The hood is attached by screwing it onto the front of the lens.
The lens cap is attached by screwing it onto the hood that is attached to the lens.
„ About the Lens Mount
This is the Q-mount specifically designed for the
PENTAX digital cameras.
With the lens information contacts, this lens mount
enables autofocus and autoexposure.
Lens information
Be careful not to damage or dirty the lens mount
surface as this could result in failure or malfunction.
Front-ring thread
Focusing ring
Mounting index
Lens mount
Lens hood (optional)
Lens cap (optional)
Refer to your camera operating manual regarding how to focus.
„ Using the Quick-shift Focus System
You can focus manually after autofocus is performed. Just turn the focusing ring to
manually adjust the focus.
You can do this without switching the focus mode to MF.
<How to take pictures>
1. Using autofocus.
2. Hold down the shutter release button halfway, then turn the focusing ring to finely
adjust the focus.
3. Finally, press the shutter release button fully to take a picture.
• You must set the camera's Autofocus Method to a method that can lock the focus in
advance to use the Quick-shift Focus System.
• Keep pressing the shutter release button after you achieve proper focus and before
taking a picture. If you let the shutter release button go before taking a picture,
autofocus will operate again when you press the shutter release button again.
• Screw a commercially available 40.5mm diameter filter onto the front of the lens.
• 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.
For customers in USA
This device complies with Part 15 of the FCC Rules. Operation is subject to the
following two conditions: (1) This device may not cause harmful interference, and (2)
this device must accept any interference received, including interference that may
cause undesired operation.
Changes or modifications not approved by the party responsible for compliance could
void the user's authority to operate the equipment.
This equipment has been tested and found to comply with the limits for a Class B digital
device, pursuant to part 15 of the FCC Rules. These limits are designed to provide
reasonable protection against harmful interference in a residential installation. This
equipment generates, uses and can radiate radio frequency energy and, if not installed
and used in accordance with the instructions, may cause harmful interference to radio
communications. However, there is no guarantee that interference will not occur in a
particular installation. If this equipment does cause harmful interference to radio or
television reception, which can be determined by turning the equipment off and on, the
user is encouraged to try to correct the interference by one or more of the following
measures :
• Reorient or relocate the receiving antenna.
Increase the separation between the equipment and receiver.
Connect the equipment into an outlet on a circuit different from that to which the
receiver is connected.
*Consult the dealer or an experienced radio/TV technician for help.
For customers in Canada
This Class B digital apparatus complies with Canadian ICES-003.
Cet appareil numérique de la classe B est conforme à la norme NMB-003 du Canada.
The CE Mark is a Directive conformity mark of
the European Union.
HOYA Corporation
PENTAX Imaging Systems Division
2-35-7, Maeno-cho, Itabashi-ku, Tokyo 174-8639, JAPAN (http://www.pentax.jp)
PENTAX Europe Imaging Systems S.A.S. (European Headquarters)
112 Quai de Bezons, B.P. 204, 95106 Argenteuil Cedex, FRANCE
(HQ - http://www.pentax.eu/) (France - http://www.pentax.fr)
PENTAX Imaging Systems GmbH
Julius-Vosseler-Strasse 104, 22527 Hamburg, GERMANY (http://www.pentax.de)
PENTAX Imaging Systems Limited
PENTAX House, Heron Drive, Langley, Slough, Berks SL3 8PN, U.K.
PENTAX Imaging Company
A Division of PENTAX of America, Inc.
600 12th Street, Suite 300 Golden, Colorado 80401, U.S.A.
(PENTAX Service Department)
250 North 54th Street Chandler, Arizona 85226, U.S.A.
PENTAX Canada Inc.
1770 Argentia Road Mississauga, Ontario L5N 3S7, CANADA (http://www.pentax.ca)
PENTAX Trading (SHANGHAI) Limited
23D, Jun Yao International Plaza, 789 Zhaojiabang Road, Xu Hui District,
Shanghai, 200032 CHINA (http://www.pentax.com.cn)
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