Pentax smc Pentax-FA User manual

smc PENTAX-FA
INTERCHANGEABLE LENS
OPERATING MANUAL

Foreward
Thank you for purchasing the smc PENTAX In .
This operating manual applies to all of th
J lenses.
Please also read your camera's operating m
1111 II .
N
AX FA and FA
* In this manual, the "smc PENTAX - FA In " I r( I( II I <It o "A
lens" and th e "smc PENTAX -FA J lens" th" ~ I\ ,j I( II i ".
* Illustrations shown herein may differ from th tu II IPP or n e.

USING YOUR LENS SAFETY
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.
&WAR
& CAUTION
This symbol indicates precautions that if not
followed, could result
in serious injury to the
user.
This symbol indicates precautions that if not
followed, could result in minor or medium
injury to the user or damage to the equipment.

LhWAR
• 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)
Lh CAUTION
• Do not leave the lens in
direct sunlight without lens
caps. Sun rays passing
through the lens will be
intensified, and should
they focus on flammable
materials, fire may occur.

•
PRECAUTIONS 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, 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.

5. Avoid subjecting the lens to rapid changes in tomperature, otherwise con-
densation may occur
on both the inside and th e outside of the lens. Put the
lens
in a plastic bag or camera bag, and take it out altor the lens has reached
ambient temperature.
6. When the lens is not attached to the camera body, a tt ach both the provided
lens cap and lens mount cap to protect it from
du t.
7. Do not leave the camera with the lens cap off a tt ac l1 d to a trrp od or other
rigid camera support. The inner parts of the cam
ro con b clnrnog d by
direct sunlight.
8. Have the lens inspected by a dealer everyone or tw o y ars to maintain its
high performance.

CONTENTS
PRECAUTIONS AND LENS MAINTENANCE ................................. 3
About the smc PENTAX-FAIFA 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

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

About the smc PENTAX-FAIFA J Lens
[Single Focal Length Lens]
Focusing ring Front-ring threads
Distance scale
'--- Aperture ring
'--- Depth-of-field scale
Aperture A-lock button

[Zoom Lens]
Aperture index ----...
{long focal length}
Aperture A-lock
button
=
PEfrlTAX 28- 705
Focusing ring
.---- Di stance scale
_______ -Zoom ring
Ap erture ring (note)
Ap erture index
{short focal length}
Note:
The following l enses do not have an aperture ring: FA J 1B-35mm
f/4-5.6AL, FA J 2B-BOmm f/3.5-5.6AL, and FA J 75- 300mm f/4.5-5.BAL.
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.

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.
=
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;t:--.':PE~N~TA~X 28-10
5
56 s.l
A 2216
118
. .;r
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.

Changing the Lens
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.

Finger Point on Limited Lenses
You can easily attach a Limited lens
by aligning
the fi nger point on the
lens with the camera 's lens unlock
button.
Limited lenses
FA
31 mm f/1.8AL Limited
FA 43mm f/1.9 Limited
FA 77mm f/1.8 Limited
Lens Cap
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.

Focusing
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.
pENTA>( 50
AJ221611856
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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.

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.

• If your camera has a K AF 2 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 K
AF 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
00
infinity symbol. This is because,
the pOint of focus changes depend-
ing on the temperature, and some-
times the focus is achieved beyond
the
00 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.

Setting the Aperture [A (Auto) Lock Switching]
--
-
( "I ) 15 8
It
III
22 16 B
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50
J 6
11 8 5.64
,::=------==::-
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.
,
--
-
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15 8
It
2 2:;r;;-
-2, III
pENTAX
50
'--
-
-
AJ 22 16 11
8 5.6 4 2.8
21.4
•
-
-•
--
* If your camera has a K mount with
no lens information contacts, set
the aperture ring to any aperture
except A.

= "I
PENTAX 28-105
1611 8 5 . 6 ~ /
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], tum 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
= "I
PEN lAX 28-105
A 2216
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 wh i te 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.

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 fl2
indicates f/2.8.
PENTA)(
= ~ J
If there is no white dot for a click stop between the finumbers, 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 1.7 2 • 2.8 • 2.4 3.4 4 • 5.6 • 8 4.8 6.7 •
11 • 16
9.5 13.5 •
22 • 32
19 26 •
45
38

Using the Infrared Index
158ft
8
pENTA X 50
AJ 22 16 11 8 5.6 4 2.8 2 1.4
--
--
If you use infrared film with an R2
or
02 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 ",i4t cam-
eras since these cameras use
infrared light to detect film transport
operations.
15 8 ft
_Ill
8
pENTAX 50
.J:::::=:=:~~~
AJ 22 16 11 8 5.6 4 2.8 2 1.4
--I
--,
•
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 tum 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.