Pentax 26755 - SMC P FA 645 Zoom Lens User manual

smc PENTAX-FA
INTERCHANGEABLE LENS
OPERATING MANUAL
50
15
8
10
3
2
A
22
16
11
8
5.6
4
2.8
1.4
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Foreward
Thank you for purchasing the smc PENTAX lens.
This operating manual applies to all of the smc PENTAX FA and FA
J lenses.
Please also read your camera's operating manual.
* In this manual, the "smc PENTAX - FA lens" is referred to as "FA
lens" and the "smc PENTAX - FA J lens" as the "FA J lens".
* Illustrations shown herein may differ from the actual appearance.
* PENTAX and smc PENTAX are trademarks of HOYA CORPORATION.
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USING YOUR LENS SAFETY 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.
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WARNING
• Never look at the sun
through the lens or
camera. Serious damage to
the retina, or total loss of
eyesight may occur.
• Wrapping the strap around
your neck is dangerous.
Make sure that small
children do not get the
strap caught around their
neck. (A strap is supplied
only with some large types
of lenses)
CAUTION
• Do not leave the lens in
direct sunlight without lens
caps. Sunrays passing
through the lens will be
intensified, and should
they focus on flammable
materials, fire may occur.
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PRECAUTIONS AND LENS MAINTENANCE 3
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, ward-
robe, 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 dam-
age 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.
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5. Avoid subjecting the lens to rapid changes in temperature, otherwise con-
densation may 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 provided
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.
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CONTENTS 5
PRECAUTIONS AND LENS MAINTENANCE …………………………… 3
About the smc PENTAX-FA/FA J Lens…………………………………… 7
• About the zoom ring ………………………………………………………… 9
Changing the Lens…………………………………………………………… 10
Finger Point on Limited Lenses…………………………………………… 11
Lens Cap ……………………………………………………………………… 11
Focusing ……………………………………………………………………… 12
• Autofocusing ………………………………………………………………… 12
• Manual focusing …………………………………………………………… 12
• FAlenses…………………………………………………………………… 13
• Setting autofocus …………………………………………………………… 13
• Setting manual focus ……………………………………………………… 13
Setting the Aperture [A (Auto) Lock Switching] ……………………… 15
• About the Zoom Lens Aperture …………………………………………… 16
• Apertures and Click Stops ………………………………………………… 17
Using the Infrared Index …………………………………………………… 18
• Zoom Lens Infrared Index ………………………………………………… 19
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Lens Hood …………………………………………………………………… 20
• Note: ………………………………………………………………………… 20
• Compatible Lens Hoods …………………………………………………… 21
• Attaching a Round Lens Hood …………………………………………… 22
• Attaching a Square Lens Hood …………………………………………… 23
• Using the Built-in Lens Hood ……………………………………………… 24
• PL Filter Window …………………………………………………………… 25
Tripod Mount ………………………………………………………………… 27
Filters…………………………………………………………………………… 28
• Filter Cautions ……………………………………………………………… 28
• Filter Sizes …………………………………………………………………… 28
• Note: Using a Circular Polarizing Filter …………………………………… 29
• Note: Attaching a Specialized Hood ……………………………………… 29
Cautions When Using Flash ……………………………………………… 30
• Compatibility with Built-in Flash …………………………………………… 31
Lens Case……………………………………………………………………… 32
• Lens Case Compatibility Table …………………………………………… 32
Main Specifications ………………………………………………………… 34
STATEMENT OF FCC COMPLIANCE …………………………………… 36
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About the smc PENTAX-FA/FA J Lens 7
50
15
8
10
3
2
A
22
16
11
8
5.6
4
2.8
1.4
Focusing ring
Aperture ring
Distance scale
Front-ring threads
Depth-of-field scale
Aperture A-lock button
[Single Focal Length Lens]
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Focusing ring
Distance scale
Zoom ring
Aperture ring (note)
Aperture A-lock
button
Aperture index
{short focal length}
Aperture index
{long focal length}
Note:The following lenses do not have an aperture ring: FA J 18-35mm
f/4-5.6AL, FA J 28-80mm f/3.5-5.6AL, and FA J 75- 300mm f/4.5-5.8AL.
The aperture is controlled at the A [Auto] setting. Therefore, the lens is not
compatible with cameras and accessories which are not compatible with
the A setting.
[Zoom Lens]
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