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.
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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.
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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 DAlens .............................................................................................. 15
Using Autofocus ................................................................................................ 16
Using Manual Focus .......................................................................................... 18
Using the Quick-Shift Focus System ................................................................. 18
How to use the Quick-Shift Focus System ........................................................ 19
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4
DA200mm f/2.8ED [IF] SDM, DA300mm 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
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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 DA55mm 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.
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7
About dustproof, water resistance, and simplified weather resistance
• Dust-proof and water-resistant lenses
DA55mm f/1.4 SDM, DA300mm f/4ED [IF] SDM, DA200mm f/2.8ED [IF] SDM,
DA16-50mm f/2.8ED AL [IF] SDM, DA50-135mm f/2.8ED [IF] SDM, DA60-250mm
f/4ED [IF]SDM
These DAlenses 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.
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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
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