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
FAlens-Cover.indd1FAlens-Cover.indd1 2008/09/2615:39:182008/09/2615:39:18

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.
FAlens-Cover.indd2FAlens-Cover.indd2 2008/09/2615:39:192008/09/2615:39:19

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.
FAlens-Body.indd1FAlens-Body.indd1 2008/09/3017:02:342008/09/3017:02:34

2
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.
FAlens-Body.indd2FAlens-Body.indd2 2008/09/3017:02:342008/09/3017:02:34

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.
FAlens-Body.indd3FAlens-Body.indd3 2008/09/3017:02:342008/09/3017:02:34

4
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.
FAlens-Body.indd4FAlens-Body.indd4 2008/09/3017:02:352008/09/3017:02:35

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
FAlens-Body.indd5FAlens-Body.indd5 2008/09/3017:02:352008/09/3017:02:35

6
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
FAlens-Body.indd6FAlens-Body.indd6 2008/09/3017:02:352008/09/3017:02:35

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]
FAlens-Body.indd7FAlens-Body.indd7 2008/09/3017:02:352008/09/3017:02:35

8
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]
FAlens-Body.indd8FAlens-Body.indd8 2008/09/3017:02:352008/09/3017:02:35

9
A zoom lens has two rings: The
focusing ring at the front of the lens
and the zoom ring behind it. Turn the
zoom ring to obtain the desired angle
of view (focal distance).
* Whenever you turn the zoom ring
to change the angle of view (focal
distance), the focus may also
change slightly. First turn the zoom
ring, then focus. About the zoom ring
Turning the zoom ring to the right
gets a [Telephoto] effect, making the
subject look larger. Turning it to the
left gets a [Wide angle] effect, cover-
ing a wider area.
FAlens-Body.indd9FAlens-Body.indd9 2008/09/3017:02:352008/09/3017:02:35

Changing the Lens
10
1.Align the mount index red dots
on the camera body and lens and
attach the lens. Turn the lens clock-
wise until it locks in place.
2. To detach the lens, hold down the
camera's lens unlock button, then
turn the lens counterclockwise.
* When attaching a lens, do not press the camera's lens unlock button. Doing
so causes improper lens attachment.
* After attaching a lens, turn the lens counterclockwise slightly to make sure the
lens is locked in place.
FAlens-Body.indd10FAlens-Body.indd10 2008/09/3017:02:352008/09/3017:02:35

Finger Point on Limited Lenses Lens Cap 11
You can easily attach a Limited lens
by aligning the finger point on the
lens with the camera's lens unlock
button.
Limited lenses
FA 31mm f/1.8AL Limited
FA 43mm f/1.9 Limited
FA 77mm f/1.8 Limited
To remove the lens cap, squeeze the
tabs as shown in the illustration.
* When not using a lens, be sure to
attach the lens cap.
* For the FA 43mm f/1.9 Limited
lens, attach the lens cap to the
hood. The lens cap cannot be
attached directly to the front of the
lens.
FAlens-Body.indd11FAlens-Body.indd11 2008/09/3017:02:352008/09/3017:02:35

Focusing
12
To switch between autofocusing and
manual focusing, use the camera's
focus mode lever. For details, refer to
your camera's instruction manual.
* For FAlenses, see page 13.
* For non-autofocus cameras, use
manual focusing.
Autofocusing
Press the shutter button halfway to
autofocus.
* During autofocusing, the focusing
ring rotates so do not touch it.
Manual focusing
Turn the focusing ring as shown in
the illustration.
22
16
11
8
5.6
4
28
2
14
A
50
15 86
10 32
1.5
ft
m
FAlens-Body.indd12FAlens-Body.indd12 2008/09/3017:02:362008/09/3017:02:36

13
FAlenses
With FAlenses, shift the focus-
ing ring forward or back to switch
between autofocus and manual
focus.
Setting autofocus
Push the focusing ring forward until
you can see AUTO FOCUS.
* When the lens is set for autofocus,
the focusing ring locks.
Setting manual focus
Pull the focusing ring until AUTO
FOCUS is hidden. Turn the focusing
ring to focus manually.
FAlens-Body.indd13FAlens-Body.indd13 2008/09/3017:02:362008/09/3017:02:36

14
* If your camera has a KAF2 mount,
you can still switch between auto-
focus and manual focus with the
lens focusing ring even when the
camera has been set to autofocus.
* If you have a camera (such as the
SF-series) having a KAF mount, set
both the camera and lens focus
mode switch to the same setting. If
the camera is set to autofocus [AF
single] and the lens is set to manu-
al focus, you cannot take a picture
until the camera's focus indicator
lights.
* If you use a camera which does not
have autofocus, focus manually.
* The telephoto lens' focusing ring
stops turning at slightly past the ∞
infinity symbol. This is because,
the point of focus changes depend-
ing on the temperature, and some-
times the focus is achieved beyond
the ∞ infinity symbol.
* Even when focusing at infinity,
always look through the viewfind-
er to make sure the subject is in
focus.
* When the lens is set for manual
focus, the focusing ring can contin-
ue to turn even past the minimum
focusing distance or infinity mark.
FAlens-Body.indd14FAlens-Body.indd14 2008/09/3017:02:362008/09/3017:02:36

Setting the Aperture [A (Auto) Lock Switching] 15
To set the aperture ring to A [Auto],
hold down the Aperture A-lock but-
ton and align the A index with the
white-line index. To set the aperture
ring to another setting, hold down the
Aperture A-lock button and turn the
aperture ring.
* If your camera has a K mount with
no lens information contacts, set
the aperture ring to any aperture
except A.
22
16
11
8
5.6
4
A
50
15
10 3
2
ft
m
8
22
16 8
22
16
42.8
2
1.4
A
50
15
10 3
2
ft
m
8
22
16 8
11 85.6
FAlens-Body.indd15FAlens-Body.indd15 2008/09/3017:02:362008/09/3017:02:36

16
About the Zoom Lens Aperture
Zoom lenses whose maximum aperture
varies depending on the focal length
have a [Minimum length] aperture
index for the shortest focal length and a
[Maximum length] aperture index for the
longest focal length. To set the aperture
to A [Auto], turn the aperture ring to the
white [Short focal length index] at the
center (regardless of the focal length) as
shown in the illustration.
For the longer focal lengths, if you want
to set an aperture other than A, align the
aperture ring with the long focal length's
aperture.
For example, with a 28-105mm zoom
lens set to 105mm, set the f/8 aperture
by aligning the aperture ring's f/8 to the
[Long focal length aperture index] mark
on the left of the white index.
* When setting the aperture manually
at a middle focal length, use the aper-
ture index for the short and long focal
lengths as a reference.
FAlens-Body.indd16FAlens-Body.indd16 2008/09/3017:02:362008/09/3017:02:36

17
Apertures and Click Stops
Certain lenses have a white dot next
to the maximum aperture. The white
dot indicates a difference of one aper-
ture stop. For example, as shown on
the right, the white dot next to f/2
indicates f/2.8.
If there is no white dot for a click stop between the f/numbers, the click stop
indicates the respective f/number shown below. Also, certain lenses have no
intermediate click stop at both ends of the aperture scale due to a lack of space.
Do not set the aperture ring to a position where there is no click stop.
1.4
1.2
2
1.7
2.8
2.4
4
3.4
5.6
4.8
8
6.7
11
9.5
16
13.5
22
19
32
26
45
38
FAlens-Body.indd17FAlens-Body.indd17 2008/09/3017:02:362008/09/3017:02:36

Using the Infrared Index
If you use infrared film with an R2
or O2 filter, the point of focus differs
from normal shooting (with visible
light). This means the point of focus
must be corrected.
* Infrared film cannot be used with
the MZ-S, MZ-60, and cam-
eras since these cameras use
infrared light to detect film transport
operations.
When the subject is in focus in the view-
finder, note the point of focus on the
distance scale (shown in the left illustra-
tion). Then turn the focusing ring so the
respective point of focus on the distance
scale is aligned with the infrared index
mark, as shown in the right illustration.
* Before turning the focusing ring, set
the focus mode to manual focus.
* To determine the proper exposure,
refer to the film's instruction manual.
18
22
16
42.8
2
1.4
A
50
15
10 3
21
ft
m
8
22
16 8
11 85.6
22
16
42.8
2
1.4
A
50
15
10 3
2
ft
m
8
22
16 8
11 85.6
FAlens-Body.indd18FAlens-Body.indd18 2008/09/3017:02:372008/09/3017:02:37