Pentax smc -DA INTERCHANGEABLE LENS User manual

smc PENTAX-DA
INTERCHANGEABLE LENS
OPERATING MANUAL
DA Lens_ENG.book Page -1 Monday, January 3, 2011 11:45 AM

FOREWORD
Thank you for purchasing the smc PENTAX-DA lens.
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.
The smc PENTAX-DA lens can be used exclusively with PENTAX digital SLR
cameras. This lens is not compatible with film SLR cameras.
• In this operating manual, “smc PENTAX-DA lens” is shortened to “DA lens.”
• Illustrations shown herein may differ from the actual appearance.
• PENTAX and smc PENTAX are trademarks of HOYA CORPORATION.
• SDM is a trademark of HOYA CORPORATION.
DA Lens_ENG.book Page 0 Monday, January 3, 2011 11:45 AM

1
USING YOUR LENS SAFELY
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 injuries to the user.
CAUTION This symbol indicates precautions that if not followed,
could result in minor or medium injuries to the user or
damage to the equipment.
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 the lens cap. Direct sunlight
passing through the lens will be intensified, and should it focus on flammable
materials, fire may occur.
DA Lens_ENG.book Page 1 Monday, January 3, 2011 11:45 AM

2PRECAUTIONS AND LENS MAINTENANCE
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. Be careful when handling lenses that are not dust-proof, water-resistant, or do not have simplified
weather-resistant construction in the rain, fog or environments in which sand or dust is in the air.
3. 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, etc.
4. Never use any organic solvent such as thinner, alcohol, or benzine, etc. to remove dust on the lens.
5. 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.
6. 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.
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.
DA Lens_ENG.book Page 2 Monday, January 3, 2011 11:45 AM

3
CONTENTS
FOREWORD
USING YOUR LENS SAFELY ................................................................................. 1
PRECAUTIONS AND LENS MAINTENANCE ........................................................ 2
FEATURES OF THE smc PENTAX-DA LENS ....................................................... 6
About dustproof, water resistance, and simplified weather resistance ................ 7
smc PENTAX-DA LENS .......................................................................................... 8
About the DA lens mount .................................................................................... 9
About lenses with a supersonic motor ............................................................... 10
Precautions for using lenses equipped with a supersonic motor
on the .................................................................................................. 11
MOUNTING AND REMOVING THE LENS ............................................................ 12
LENS CAP ............................................................................................................. 13
Attaching the dedicated lens cap to DA 15mm f/4ED AL Limited ...................... 14
Attaching the dedicated lens cap to DA 40mm f/2.8 Limited ............................. 14
FOCUSING ............................................................................................................. 15
Changing the Focus Mode ................................................................................ 15
For the DAlens .............................................................................................. 15
Using Autofocus ................................................................................................ 16
Using Manual Focus .......................................................................................... 18
Using the Quick-Shift Focus System ................................................................. 18
How to use the Quick-Shift Focus System ........................................................ 19
DA Lens_ENG.book Page 3 Monday, January 3, 2011 11:45 AM

4
DA200mm f/2.8ED [IF] SDM, DA300mm f/4ED [IF] SDM focusing .......... 21
Precautions on close-distance scale ................................................................. 22
ZOOM LENS .......................................................................................................... 23
About the zoom ring .......................................................................................... 24
MACRO LENS ....................................................................................................... 25
Magnification Scale ........................................................................................... 25
ATTACHING THE LENS HOOD ............................................................................ 26
Screw-on Type (DA 70mm f/2.4 Limited dedicated lens hood) ......................... 26
Screw-on Type (DA 40mm f/2.8 Limited dedicated lens hood) ......................... 27
Bayonet Type .................................................................................................... 27
Bayonet Type (DA 21mm f/3.2 AL Limited dedicated lens hood) ...................... 28
About the PL filter window ................................................................................. 29
Built-in lens hood ............................................................................................... 31
FILTERS ................................................................................................................. 32
Precaution on filters ........................................................................................... 32
Attaching the 30.5mm filter to the DA 40mm f/2.8 Limited lens ......................... 32
Attaching a filter and the dedicated lens hood to the DA 21mm f/3.2
AL Limited lens .................................................................................................. 33
Attaching a filter and the dedicated lens hood to the DA 70mm f/2.4
Limited lens ....................................................................................................... 34
Circular polarizing filters and vignetting ............................................................. 35
DA Lens_ENG.book Page 4 Monday, January 3, 2011 11:45 AM

5
Compatibility table for PENTAX circular polarizing filters .................................. 36
PRECAUTIONS WHEN USING THE LENS WITH A FLASH ............................... 40
Built-in Flash ...................................................................................................... 40
External Flash ................................................................................................... 40
Compatibility of DA Lenses with the Built-in Flash ............................................ 42
TRIPOD MOUNT .................................................................................................... 44
Removing the Tripod Mount .............................................................................. 45
MAIN SPECIFICATIONS ....................................................................................... 46
DA Lens_ENG.book Page 5 Monday, January 3, 2011 11:45 AM

6FEATURES OF THE smc PENTAX-DA LENS
• The smc PENTAX-DA lens is an interchangeable lens specifically designed for digital
cameras. Its image circle is specialized for image sensors in PENTAX digital SLR
cameras and its optical system is optimized for the characteristics of digital images.
• When autofocusing is finished, it is possible to make fine adjustment by hand using the
“Quick-Shift Focus System” (see page 19 for details).
• Lenses that have “SDM” in their name are equipped with a supersonic motor. When
mounted on a camera that supports supersonic motors, the autofocus is quiet and
smooth.
• The DA55mm f/1.4 SDM uses a circular aperture. Using it when stopping down from
full aperture to about f/2.8 keeps light sources and other fuzzy points perfectly round.
DA Lens_ENG.book Page 6 Monday, January 3, 2011 11:45 AM

7
About dustproof, water resistance, and simplified weather resistance
• Dust-proof and water-resistant lenses
DA55mm f/1.4 SDM, DA300mm f/4ED [IF] SDM, DA200mm f/2.8ED [IF] SDM,
DA16-50mm f/2.8ED AL [IF] SDM, DA50-135mm f/2.8ED [IF] SDM, DA60-250mm
f/4ED [IF]SDM
These DAlenses are dust-proof and water-resistant because each part is individually
sealed. This makes it difficult for dust and water to enter the lens.
• Lenses with simplified weather-resistant construction
DA 18-55mm f/3.5-5.6 AL WR, DA 50-200mm f/4-5.6ED WR
These lenses are made with a simplified weather-resistant construction by using DA
lens sealing technology which makes it difficult for water to enter the lens.
DA Lens_ENG.book Page 7 Monday, January 3, 2011 11:45 AM

8smc PENTAX-DA LENS
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.
• The DA lens is not compatible with film SLR cameras.
Focusing ring
Distance scale
window
Depth-of-field scale
Mounting index
Lens hood
attaching index
Distance scale
Depth-of-field scale
Distance index
DA Lens_ENG.book Page 8 Monday, January 3, 2011 11:45 AM

9
About the DA lens mount
The DA lens is an interchangeable lens specifically designed for PENTAX digital SLR cameras.
There are three mounts for the DA lens, the KAF, KAF2 and KAF3.
Refer to the next page for more information on lenses with a supersonic motor.
KAF-mount KAF2-mount KAF3-mount
Lenses with a supersonic motor Lenses with a supersonic motor
(supersonic motor only)
CAUTION
Be careful not to damage or dirty the lens mount surfaces as this can result in failure
or malfunction.
AF coupler Lens information
contacts
Power supply contacts
Lens information
contacts
AF coupler
Power supply contacts
Lens information
contacts
DA Lens_ENG.book Page 9 Monday, January 3, 2011 11:45 AM

10
About lenses with a supersonic motor
The lenses in the table below are equipped with an internal supersonic motor. When
mounted on a camera body that supports supersonic motors, the autofocus (AF) works
quietly and smoothly.
• Supersonic motor compatible camera body
K-series (excluding and )
If the firmware is version 1.30 or later, it supports supersonic motor. (Refer to page 11)
* In both cases focusing can be done manually.
Lens Precautions
DA55mm f/1.4 SDM
DA17-70mm f/4 AL [IF] SDM
• The lens uses a supersonic motor. When the lens
is mounted on a camera body that does not
support supersonic motors (including the
with firmware older than version 1.30), the
autofocus cannot be operated by either the AF
motor in the camera body or the supersonic motor.
•
If using the lens with the following cameras, and
the power is turned on, MF appears in the monitor,
but it does not interfere with AF operations.
, , ,
DA60-250mm f/4ED [IF] SDM
DA16-50mm f/2.8ED AL [IF] SDM
DA50-135mm f/2.8ED [IF] SDM
DA200mm f/2.8ED [IF] SDM
DA300mm f/4ED [IF] SDM
When the lens is mounted on a camera body that
does not support supersonic motors (including the
with firmware older than version 1.30), the
autofocus is operated by the AF motor in the
camera body.
DA Lens_ENG.book Page 10 Monday, January 3, 2011 11:45 AM

11
Precautions for using lenses equipped with a supersonic motor on the
When using lenses equipped with a supersonic motor on the , use camera
firmware version 1.30 or later.
• How to Check and Update the Firmware
Turn on the while holding down the MENU button to display the firmware
version in the center of the display.
Download and install the updated firmware for the using the link below.
• Firmware Download Page:
http://www.pentax.jp/english/support/download_digital.html
DA Lens_ENG.book Page 11 Monday, January 3, 2011 11:45 AM

12 MOUNTING AND REMOVING THE LENS
1. To mount the lens on the camera body
Attach the lens while aligning the red dots on the lens and body, then turn the lens
clockwise until it clicks in 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.
12
Mounting index
DA Lens_ENG.book Page 12 Monday, January 3, 2011 11:45 AM

13
LENS CAP
Take off the lens cap by pressing the two tabs inward.
"Memo:
• When not using the lens, be sure to attach the lens cap.
• Attach the dedicated lens cap over the lens hood on the DA 21mm f/3.2 AL Limited,
DA 35mm f/2.8 Macro Limited, DA FISH-EYE 10-17mm f/3.5-4.5ED [IF], and DA
70mm f/2.4 Limited. Also, with the DA 21mm f/3.2 AL Limited, DA 40mm f/2.8
Limited, and DA 70mm f/2.4 Limited, it is possible to mount the F49mm lens cap
(option) by removing the lens hood.
DA Lens_ENG.book Page 13 Monday, January 3, 2011 11:45 AM

14
Attaching the dedicated lens cap to DA 15mm f/4ED AL Limited
Screw the lens cap to the front of the lens.
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 the lens cap onto the lens hood.
DA Lens_ENG.book Page 14 Monday, January 3, 2011 11:45 AM

15
FOCUSING
Changing the Focus Mode
Use the camera’s focus mode switch to change between autofocus mode and manual
focus mode. For details, refer to your camera operating manual.
For the DAlens
The focus mode switch on the DAlens is used to
change between the autofocus and manual focus modes
(the focus mode switch on the camera is always set to
autofocus).
To use the autofocus, set the switch to the AF position.
To use the manual focus, set the switch to the MF
position.
Focus mode
switch
DA Lens_ENG.book Page 15 Monday, January 3, 2011 11:45 AM

16
Using Autofocus
Set the focus mode to autofocus. Press the shutter release button halfway to autofocus.
See page 15 for information about changing the focus mode.
"Memo:
• Depending on your camera model, you can focus by operating buttons on the camera
body. For details on how to set and use available functions of the buttons, refer to
your camera operating manual.
DA Lens_ENG.book Page 16 Monday, January 3, 2011 11:45 AM

17
CAUTION
During autofocusing, the focusing ring of the following lenses will rotate.
• To prevent malfunction, do not touch the focusing ring during autofocusing.
Particularly be careful when the Focus Mode is set to AF.C (Continuous mode).
The camera continues adjusting the focus while the AF button is pressed or the
shutter release button is pressed halfway.
- DA FISH-EYE 10-17mm f/3.5-4.5ED [IF] - DA 12-24mm f/4ED AL [IF]
- DA 16-45mm f/4ED AL - DA 17-70mm f/4 AL [IF] SDM
- DA 18-55mm f/3.5-5.6 AL WR - DA L 18-55mm f/3.5-5.6 AL
- DA 50-200mm f/4-5.6ED WR - DA L 50-200mm f/4-5.6ED
- DA 55-300mm f/4-5.8ED - DA 15mm f/4ED AL Limited
- DA 21mm f/3.2 AL Limited - DA 35mm f/2.8 Macro Limited
- DA 40mm f/2.8 Limited - DA 70mm f/2.4 Limited
DA Lens_ENG.book Page 17 Monday, January 3, 2011 11:45 AM

18
Using Manual Focus
Set the focus mode to MF, and turn the focusing ring to focus manually.
See page 15 for information about changing the focus mode.
Using the Quick-Shift Focus System
If the focus mode is set to autofocus, you can focus manually after autofocus is achieved.
Manually turn the focusing ring to finely adjust the focus. You can do this without changing
the focus mode to MF.
The Quick Shift Focus System is not available with the following lenses.
- DA L 18-55mm f/3.5-5.6 AL - DA L 50-200mm f/4-5.6ED
DA Lens_ENG.book Page 18 Monday, January 3, 2011 11:45 AM