Pentax Lens User manual

smc PENTAX-FA
INTERCHANGEABLE LENS
OPERATING MANUAL
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Congratulations on your purchase of smc PENTAX
lens.
This operating manual applies to all of the smc
PENTAX FA, FAJ and F lenses.
※※In this manual, smc PENTAX FA lens is referred
to as FA lens.
※※Please also read your camera's operating manual.
※※Illustrations shown herein may differ from the
actual appearance.

CONTENTS
°FOR SAFE USE YOUR LENS……………1
°PRECAUTION AND LENS
MAINTENANCE ……………………………2
°smc PENTAX F, FA and FAJ LENSES …3
•Mount compatibility
°MOUNTING AND REMOVING OF
LENS ………………………………………5
°FINGER POINT ……………………………6
°APERTURE CONTROL …………………6
°FOCUSING …………………………………7
°HOW TO USE INFRARED INDEX ………9
°LENS HOOD………………………………10
•Square lens hood
•Round-type lens hood
•Built-in lens hood
°FILTER ……………………………………14
°ZOOM LENS………………………………16
°POWER ZOOM LENS……………………17
•Power zoom ring
•Aperture
•Infrared index of the zoom lens
°MACRO LENS ……………………………22
•Focus range limiter
•Clamp screw
•Tripod mount
•Magnification
°WIDE-ANGLE LENS
(FA★24mm f/2 AL (IF) ) …………………27
°TELEPHOTO LENS FA★85mm f/1.4 (IF)
FA★200mm f/2.8ED (IF),
FA★300mm f/4.5ED (IF) …………………28
•Note on ∞(infinity) mark
°PRECAUTIONS WHEN THE FLASH IS
USED ………………………………………30
°SOFT CASE FOR LENS…………………31
°SPECIFICATIONS ………………………32
°COMPATIBILITY OF LENSES
WITH THE BUILT-IN FLASH ……………38

WARNING
••Never look at the sun through the lens
or camera. Serious damage to the reti-
na, or total loss of eyesight may occur.
••Wrapping the strap around your neck is
dangerous. Make sure that small chil-
dren do not get the strap caught their
neck. (A strap is supply 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 materi-
als, fire may occur.
FOR SAFE USE OF YOUR LENS
1
Although we have carefully designed these lenses for safe operation, Please be sure to
follow precautions given in this page.
WARNING This mark indicates precautions that if not followed,
could result in serious injury to the user.
CAUTION This mark indicates precautions that if not followed,
could result in minor or medium injury to the user
or damage to the equipment.

•Leaving the camera in the direct sunlight
without covering the lens with the lens cap,
may damage to the inside of the camera.
•When storing the lens in a case, attach the
front and near lens caps that come sup-
plied with the lens to protect it from dust
and scratches.
•After removing the lens from the camera
body, be careful not to let it roll over or fall.
Be sure to place the lens with its front side
down.
•Moisture can cause serious damage to
optical glass elements. Storage in a damp
place may cause mildew, so avoid storing
the lens in a place where temperature and
humidity are high. Keep you lens in as dry
a place as possible.
•If you do not expect to use the lens for an
extended period, store it in the case with a
desiccant or it is recommended that the
lens occasionally be taken out of the case
and placed in a cool, dry, well-ventilated
place to avoid the possibility of damage
due to condensation build-up.
•Use a blower or lens brush to remove dust
on the lens. If the lens becomes dirty,
remove the dirty particle with a blower
brush, then wipe it off with a clean cotton
cloth or tissue paper moistened with lens
cleaning solution.
Wipe in a spiral pattern from the center to
the outside.
PRECAUTION AND LENS MAINTENANCE
2

The Pentax FA lenses are primarily designed
to work with the Pentax autofocus SLR (KAF2-
or KAF2-mount camera), making autofocus
shooting possible.
When Pentax FA Zoom lenses with power
zoom function are used on the Pentax KAF2-
mount camera, the camera features a Power
Zoom system.
•An FA zoom lens without the power zoom
contacts are shown in the illustration does
not have the power zoom function.
•Do not damage or dirty the power contacts.
smc PENTAX F, FA and FAJ LENSES
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Focusing ring Front-ring threads
Distance scale
Aperture ring
Depth-of-field scale
Aperture-A-lock button
AF coupler Lens-information
contacts Power zoom contacts

•When using FA lens with the K-mount
Pentax camera having no lens information
contacts, be sure to set the lens aperture
ring to any f-stop other then A. If set to the
"A" position, the lens will automatically be
set to the minimum aperture, causing
improper exposure.
CAUTION :
•Be careful not to damage or dirty the lens
information contacts and AF coupler on the
mount surfaces of the camera and lens.
Otherwise, failure or malfunction may
result. If this occurs, wipe them gently with
a clean, dry cloth.
•FAJ28-80mm f/3.5-5.6AL and FAJ75-300
mm f/4.5-5.8AL lenses have A (Auto) posi-
tion only, no aperture ring to set a f-stop
manually. The camera body controls aper-
ture settings on "A" position. Camera bod-
ies and accessories that not compatible
with "A" cannot be used.
Camera/Lens Mount Compatibility
Pentax camera/lens mount compatibility chart
is shown below.
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KAF2-mount
which is equipped with
°Power contacts
°AF coupler
°Lens information contacts
KAF-mount
which is equipped with
°AF coupler
°Lens information contacts
KA-mount
which is equipped with
°Lens information contacts
K-mount
(base mount) -
-will not autofocus, autozoom
or provide automatic electroni-

1.To mount the lens on the camera body
Align the red dots on the lens and camera
body, and then turn the lens clockwise until
it clicks into place.
※After mounting the lens, try to 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 counter-
clockwise.
MOUNTING AND REMOVING OF LENS
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The lens can be mounted on the camera by
aligning the finger point with the lens unlock
button.
•Following Limited lenses have finger point.
FA31mm f/1.8AL Limited.
FA43mm f/1.9 Limited.
FA77mm f/1.8 Limited.
Setting the aperture to "A"(Auto)
Turn the aperture ring to align the aperture-A
index with the line while depressing the
Aperture-A-lock button. The aperture ring can
be released from "A" in the same manner
to set your desired f-stop manually.
•FA28-105mm f/4-5.6(IF) and FA28-200
mm f/3.8-5.6AL lenses can set to "A" posi-
tion without depressing the Aperture-A-lock
button.
•When using the camera body with no lens
information contact, set the aperture ring to
desired f-stop other than "A" position.
FINGER POINT
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APERTURE CONTROL

To set the focus mode
Slide the focus mode switch on the camera
body to change the focus mode to AF
(Autofocus) or MF (Manual focus).
•During autofocus, do not touch the focus-
ing ring of your lens or you will interfere
with proper lens movement.
In manual focus mode
You can adjust focus on the subjects by turn-
ing the focusing ring manually and confirming
the focus indicator in the viewfinder.
•FA 28-90mm f/3.5-5.6, FAJ 28-80mm f/3.5-
5.6AL and FAJ 75-300mm f/4.5-5.8AL
lenses have no distance scale, adjust focus
with aid of the matte field for non-auto
focus camera or using focus indicator in
the viewfinder for auto focus camera.
FOCUSING
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There is a white dot next to the maximum f-
number engraved on the lens's aperture ring
on many Pentax lenses. This white dot indi-
cates an aperture which is darker by one stop
(larger number). The illustration below shows
the white dot next to f/4.5 is f/5.6.
F-STOPS OR F-NUMBERS AND CLICK STOPS The click stops between two engraved f/stops
are equivalent to intermediate f-stops. Some
lenses do not have an intermediate click f-
stop on the aperture ring due to limited space
between the f-numbers engraved on the
aperture ring.
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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

When taking infrared pictures with infrared
film and either a "R2" or "02" filter, it is neces-
sary to adiust the focus because the point of
focus is not the same with infrared light as it
is with visible light. As shown above, memo-
rize the focusing point on the lens distance
scale when viewed through the viewfinder
and turn the focusing ring until the point you
memorized aligns with the infrared index.
•Turn the focusing ring in the MANUAL
focus mode only.
•For the exposure control requierd in this
special photography, see the information
supplied with the infrared film.
•Caution :
Infrared film can not be used for
MZ-S, MZ-60 and ＊ist cameras since
infrared ray is used for detecting device of
film transport. It will expose infrared film in
the camera.
HOW TO USE THE INFRARED INDEX
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Square Hoods (Clip-on type)
PH-SA49 FA50mm f/1.4 & f/1.7
PH-SB49 FA28mm f/2.8AL, FA Sofy28mm f/2.8
Round Hoods (screw-in-type)
PH-RA49 FA50mm f/1.4 & f/1.7
RH-RA49 F & FA Zoom 35-80mm f/4-5.6
RH-RB49 FA Zoom 70-200mm f/4-5.6
F & FA Zoom 80-200mm f/4.7-5.6
FA Macro 100mm f/3.5
RH-RC49 FA50mm f/1.4 & f/1.7
MH-RA49 FA43mm f/1.9 Limited
RH-RA52 FA Macro 50mm f/2.8
RH-RB52 FA Zoom 28-70mm f/4AL
MH-RB52 FA Soft 85mm f/2.8
RH-A58 FA Zoom 80-320mm f/4.5-5.6
F Zoom 100-300mm f/4.5-5.6
FA Zoom 100-300mm f/4.7-5.8
RH-RC58 FA Zoom 28-80mm f/3.5-5.6
FA Zoom 28-90mm f/3.5-5.6
FA Zoom 28-105mm f/4-5.6
MH-RB67 FA 20mm f/2.8
MH-RA112 FA★300mm f/2.8ED (IF)
Notes :
•Do not use the built-in flash with lens hood
because it blocks the flash light, except the
FA43mmf/1.9 Limited lens.
Bayonet-type
PH-RBA49 FA 35mm f/2AL
PH-RBA58 FA Zoom 20-35mm f/4AL
PH-RBA62 FA Zoom 28-105mm f/4-5.6 (IF)
PH-RBC58 FA Zoom 28-105mm f/3.2-4.5AL (IF)
PH-RBE58 FAJ Zoom 28-80mm f/3.5-5.6AL
PH-RBF58 FAJ Zoom 75-300mm f/4.5-5.8AL
PH-RBB67 FA★24mm f/2AL (IF)
PH-RBE67 FA Zoom 24-90mm f/3.5-4.5AL (IF)
PH-RBG67 FA★Macro 200mm f/4ED (IF)
MH-RBD67 FA★85mm f/1.4 (IF)
MH-RBB77 FA★200mm f/2.8ED (IF)
FA★400mm f/5.6ED (IF)
MH-RBC67 FA★300mm f/4.5ED (IF)
PH-RBA72 FA Zoom 28-200mm f/3,8-5.6AL (IF)
PH-RBC77 FA★Zoom28-70mm f/2.8AL
FA★Zoom 80-200mm f/2.8ED (IF)
PH = Plastic, RH = Rubber, MH = Metal
•When using the FA28-70mmf/4AL lens with
lens hood and filter, it may cause vignetting
at edges of picture at focal length of 35mm
and shorter.
•The external flash can be used with lens
hood attached to lens. FA★28-70mm
f/2.8AL lens with the external flash, refer to
page 30 for precautions.
LENS HOOD
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Make sure to use a proper size lens hood specially designed for your lens.

How to Use the Square Hood
Attach the square hood to the front of the
lens while pressing the knurled tabs on both
sides of the hood.
•Make sure to keep the top and bottom of
the hood parallel with the top and bottom
covers of the camera.
The improper fitting will cause the
vignetting in the picture corners.
How to Use the Round Hood
The round hood screws into the front of the
lens.
•The round type rubber hood can be folded
when not in use.
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How to Use the Built-in Hood
To use a lens with a built-in hood, first extend
the hood to the fullest position. The 600mm
f/4 lens and 250-600mm f/5.6 zoom lenses
come in screw-fixed-type. Extend these
hoods while rotating them for use. See the
lens instruction manual for details.
Lenses with Built-in Hoods
FA 31mm f/1.8 AL Limited
FA 77mm f/1.8 Limited
FA 135mm f/2.8 (IF)
FA 600mm f/4 ED (IF)
FA Zoom 250-600mm f/5.6 ED (IF)
*The built-in flash of the camera can be
used when the built-in hood is utilized on
the FA 77mmf/1.8 and FA 135 mm f/2.8
lens.
•For more details of Bayonet hoods, refer to
page 28.
LENS HOOD for FA★24mm f/2
How to attach
To attach the hood to the lens, align ( | ) on
the hood and ( ) on the lens front, then
turn the hood clockwise to lock it in place. To
remove it, reverse the above procedure.
•When the hood is not in use, align ( | ) on
the hood and ( ) on the lens front,
then turn the hood counterclockwise to lock
it in place.
•Always attach the lens hood to avoid stray
light.
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How to Use the Lens Hood with polarizing
filter window
1.Remove the PL filter window cap by sliding
it in the direction shown.
•The hood is designed for use with a polar-
izing filter or circular polarizing filter, and
includes a "PL filter window" for adjusting
the polarizing effect.
•When attaching the hood, align the white
dots on the lens and hood so that the PL
filter window positions on the bottom.
2.Turn the outer rim of the polarizing filter or
circular polarizing filter from the PL filter
window as shown.
3.Attach the PL filter window cap.
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Notes :
•Be sure that the PL filter window cap is in
place if no polarizing filter or circular polar-
izing filter is used.
•If strong light is entering the PL filter win-
dow, either attach the PL filter window cap
or reverse the position of the PL filter win-
dow (to top or bottom of lens). Strong light
entering the PL filter window will defeat the
effect of the lens hood and prevent the tak-
ing of clear, sharp images.
•When the Pentax circular polarizing filter
58mm, which has the knurl ring on the
back is used with the FA Zoom24-90mm
f/3.5-4.5AL (IF) or FA Zoom 28-105mm
f/3.2-4.5AL (IF) lens, the special lens hood
cannot be attached. When a non-Pentax
circular polarizing filter is attached, it also
may not be attached.
Screw-in Type Filters
This type of filter screws into the front of the
lens. Make sure to use the proper size
Pentax filter specially designed for your lens.
Precaution on filters
Attaching the filter to your lens becomes a
part of the optic.
Avoid using no more than one filter exception
of with a polarizing filter, as deterioration in
image quality may results.
•Attach the 43mm filters supplied with fol-
lowing lenses to the filter holder in the rear
of lens.
FA★300mm f/2.8ED (IF)
FA★600mm f/4ED (IF)
FA★250-600mm f/5.6ED (IF)
•A filter cannot be attached to the F Fish-
Eye Zoom 17-28mm lens.
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FILTERS

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FILTERS
Precautions for using a polarizing filter
The circular polarizing filter is thicker than an
ordinary filter.
For this reason, using the circular polarizing
filter with lenses as shown on the chart on the
right may cause vignetting at the edges of
picture.
Size Lens
52mm FA Zoom 28-70mm f/4AL
58mm FA Zoom 20-35mm f/4AL
FA Zoom 28-80mm f/3.5-5.6
FA Zoom 28-90mm f/3.5-5.6
FA Zoom 28-105mm f/4-5.6
67mm FA Zoom 24-90mm f/3.5-4.5AL (IF)
FA★Zoom 28-70mm f/2.8AL
FA 20mm f/2.8
•Use a circular polarizing filter with
Autofocus camera for proper exposure and
auto focusing.
Size Lens
49mm FA 28mm f/2AL, FA Soft 28mm f/2.8, FA 35mm f/2AL, FA 43mm f/1.9 Limited, FA 50mm f/1.4 & f/1.7,
FA 77mm f/1.8, FA Zoom 70-200mm f/4-5.6, F & FA Zoom 35-80mm f/4-5.6,
F & FA Zoom 80-200mm f/4.7-5.6, FA Macro 100mm f/3.5
52mm FA 135mm f/2.8 (IF), FA Soft 85mm f/2.8, FA Macro 50mm f/2.8, FA Zoom 28-70mm f/4 AL
58mm FA 31mm f/1.8AL Limited, FA Zoom 20-35mm f/4AL, FA Zoom 28-80mm f/3.5-5.6,
FAJ Zoom 28-80mm f/3.5-5.6AL, FA Zoom 28-90mm f/3.5-5.6, FA Zoom 28-105mm f/3.2-4.5AL (IF),
FA Zoom 28-105mm f/4-5.6, FAJ Zoom 75-300mm f/4.5-5.8AL, FA Zoom 80-320mm f/4.5-5.6,
F Zoom 100-300mm f/4.5-5.6, FA Zoom 100-300mm f/4.7-5.8, FA Macro 100mm f/2.8
62mm FA 28-105mm f/4-5.6 (IF)
67mm FA 20mm f/2.8, FA★24mm f/2AL (IF), FA★85mm f/1.4 (IF), FA★Macro 200mm f/4ED (IF),
FA★300mm f/4.5ED (IF), FA Zoom 24-90mm f/3.5-4.5AL (IF), FA★Zoom 28-70mm f/2.8AL
72mm FA 28-200mm f/3.8-5.6
77mm FA★200mm f/2.8ED (IF), FA★400mm f/5.6ED (IF), FA★Zoom 80-200mm f/2.8ED (IF)

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*An FA Zoom lens without
the power supply con-
tacts on its mount does
not have the zoom set
button and auto zoom
switch.
ZOOM LENS
28-105
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POWER
ZOOM
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Focusing ring
Zoom ring
Aperture-A lock button
Aperture index
(for longer focal
length)
Aperture index
(for shorter focal
length)
Auto zoom switch
Zoom set button

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Pentax FA and F zoom lens incorporate "two-
hand" type rings: it has separate focusing
and zooming ring. You can set your desired
focal length by turning the zoom ring.
It may shift the focusing point slightly by
changing the focal length. First, adjust zoom-
ing and then adjust focus using Autofocus or
focus indicator in the viewfinder.
The following zoom lenses also refer to its
operating manual.
FA★28-70mmf/2.8AL
FA★80-200mmf/2.8ED
FA★250-600mmf/5.6ED
The following lenses have power supply con-
tacts to capable power zoom function with the
KAF2-mount cameras. Refer to the camera's
operating manual for more details.
FA★28-70mmf/2.8AL
FA28-105mmf/4-5.6
FA70-200mmf/4-5.6
FA★80-200mmf/2.8ED(IF)
FA★250-600mmf/5.6ED(IF)
Auto zoom functions
The FA Zoom lens with power contacts com-
bined with KAF2-mount cameras can use fol-
lowing functions. Please refer to your cam-
era's operating manual for more details.
1.Zoom clip mode to pre-set or re-call the
focal length
2.Image size tracking mode to maintain the
image size (magnification value) regardless
of the distance to the subject.
3.Zoom effect mode to zoom automatically
during an exposure.
Auto zoom switch and Zoom set button
1.P (Power zoom), PZ in some lenses
Set to this position in power zooming
2.A (Auto zoom), AZ in some lenses
Set to this position for Auto zoom
3.AS (Auto zoom set), MODE in some lenses
Set this position to select the type of Auto
zoom function.
POWER ZOOM LENS

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Automatic lens retraction
When the power zoom lens is used with KAF2-
mount cameras, the following functions work
when the main switch is turned off.
1.The zoom ring automatically retracts to its
shortest length.
2.The focusing ring is set to infinity(∞).
With the combination of MZ-S camera, the
zoom ring retracts to shortest length only.
Note on Tulip mark ( )
The zoom lens provide with the tulip mark
( ) on the focusing ring that enable to take
a picture at closest distance as a fixed focal
length lens, even set at wide-angle position.
However, at the edges of picture may be
darkened due to reducing brightness of
image field.
When combined with non-KAF2-mount cam-
eras, FA Zoom lens with power supply con-
tacts does not work following functions.
•As the Power Zoom function does not
work, set the manual zoom mode. Pull the
zoom ring towards the camera side until
the words "POWER ZOOM" disappears to
set the manual zoom mode.
•The Auto Zoom switch and Zoom Set but-
ton do not work.