This booklet contains all the instructions you need to make
the most out of your SMC Pentax-F lenses. So always keep
it handy and whenever you have questions about the han-
dling, care or whatsoever, read it very carefully, together
with your camera's instruction manual.
APERTURE CONTROL +=:....==-..=—en=e.=.
Rectangular hoods
Round hoods
Built-in hoods
Macro shooting
Infrared Index
TFT ен нннание
TELEPHOTO LENS crevices 27
AF ADAPTER 1.7X mzunrmenacme een 26
WARRANTY POLICY ...ннннннеее 28
Front-ring threads
Distance scale
Focusing ring
Aperture ring
Depth-of-field scale
KAF-mount Aperture-auto-lock button
The SMC Pentax-F lenses are primarily
designed to work with the Pentax auto-
focus SLR (KAF-mount camera), making
the auto-focus shooting possible.
The aperture should be set to “A”
(Auto) when the camera is used in the
Programmed AE mode and also when
the lens is used on the KA-mount
camera. But when using the lens on the
K-mount camera, set the aperture to
a proper f-stop other than A. (If set
to A, the exposure will be made at
minimum aperture.)
Caution: Always be careful not to
damage or stain the lens-information
contacts and AF coupler on the rear lens
mount, to protect the lens from
malfunctioning or going defective.
Lens-information contacts
Moisture is not good for optical glass
elements — the nucleus of your lens.
Since storage in a damp place may
cause mildew, keep your lens in as dry
a place as possible. If you don't plan to
use your lens for a long period, store it
with a desiccant in the case. Also the
lens should occasionally be taken out
of the case and dried.
Dust and dirt should be removed with
a blower or lens brush. If the lens
becomes dirty, wipe it with a clean
cotton cloth or tissue paper dampened
with lens cleaning solution. Wipe in
a spiral pattern from the center out,
changing the cloth or paper a few
When you store your lens in a case,
put on the lens front cap and lens
mount cap, both provided as standard
accessories, to protect against dust.
When you remove a lens from your
camera body, be careful not to let it
roll over or fall down, as this may
cause malfunctions. If you are standing
the lens on a flat surface, put the lens
front down.
1. To mount the lens on the camera, 2. To remove the lens, turn the lens
align the red dot on the lens with counter-clockwise while depressing
the red dot on the camera body the lens-release lever on the camera
(see @ апа © ), seat the lens in body.
the body mount and turn the lens
clockwise until it clicks into place.
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A722 16
Set your camera in the autofocus mode
by adjusting the focus mode switch,
To adjust focusing manually, set your
camera in the manual mode. You can
also use the in-focus signal in the view-
finder by turning the focusing ring.
® When the auto-focus function is in
action, do not stop the focusing ring
from turning by touching or holding it.
When the camera is set in the MANUAL
focus mode, you can focus the lens by
turning the focusing ring and seeing
the FI signals [» © «4 ] through
the viewfinder.
When using the lens on the non-KAF-
mount camera body, focus it by turning
the focusing ring.
A122 16 11 856
To set the aperture to "A" (Auto), push
the aperture-auto-lock button and turn
the aperture ring until "A" aligns with
the red-bar index. To switch the aperture
to any other f-stop, move the aperture
ring to the left while pushing the
aperture-auto-lock button.
To set the aperture of the zoom lens
as well, align the aperture-A index with
the red-bar index. The dot on the left-
hand side of the red-bar index is used
to align an f-stop other than A with,
when shooting at a longer focal length.
For example, when you use the Zoom
35-70mm lens and wish to set the
aperture to f/8 with the focal length
at 70mm, align 8" on the aperture
scale with this dot.
f-stops or f-numbers and click stops The click stop between the two f-stops
The white dot next to the maximum is equivalent to an intermediate f-stop.
aperture of the lens indicates the Depending on the lens, no click stops are
aperture which is slower by one step provided at the extreme ends of the
(larger number). As shown below, aperture scale, since there is little space
the white dot next to f/2.8 is f/4. between the f-numbers.
e146 2 228° 4 e568 o 11 e 16 e 22 e 32 © 45
| #44 3.04 y of f
1611 8 5602.8 1611 856 4
As shown above, the wide-angle lens's
distance and aperture scales have one
each of red figure, and they are called
“snapshot marks” or “fixed-focus
marks.” When these marks are aligned
with the distance/aperture index, any
subject from about half the red-marked
distance to infinity away from the
camera is in focus. Set these marks
when not shooting in the auto-focus
model, or when using the lens with
a non-KAF-mount camera.
If you intend to take infrared photo-
graphs using infrared film and R? or 02
filters, it is necessary to compensate for
the difference between visible light focus
and infrared focus. As shown at right,
note the subject-to-camera distance on
the lens distance scale as you focus
through the viewfinder and turn the
focusing ring until that distance setting
aligns with the red infrared index mark.
e When turning the focusing ring, be sure
to set the camera in the MANUAL focus
® Рог the infrared indexes of the zoom
lenses, refer to page 21.
e For the exposure control required in
this special photography, consult the
instruction manual that accompanies
the filter.
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Pentax lens hoods come in round and
rectangular shapes, plus built-in type.
Make sure that you get the proper size
lens hood for each lens.
When the lens hood is in use, do not use
the built-in flash on your camera,
because the flash light is blocked by
the hood.
Rectangular hoods
49mm spring-type (PH) for 28mm f/2.8
49mm spring-type (PH) for 50mm £/1.4 8 f/1.7
Round hoods
49mm screw-in-type (RH) for 50mm f/1.4 & f/1.7
49mm screw-in-type (PH) for 50mm f/1.4 8: f/1.7
RH-RA 49mm screw-in-type for Zoom 35— 70mm f/3.5—4.5
RH-RB 49mm screw-intype for Zoom 70—210mm f/4—5.6
RH-RA 52mm screw-in-type for Macro 50mm f/2.8
RH-B 58mm screw-in-type for Zoom 35—105mm f/4—5.6
RH-A 60mm clip-on-type for Zoom 35-135mm f/3.5—4.5
RH-B 60mm clipon-type for Zoom 24—50mm f/4. 28—80mm f/3.5—4.5
RH= Rubber Hood ; PH=Plastic Hood
How to use rectangular hoods
1. Like lens caps, attach these hoods to
the front ring of the lens while
depressing both knurled tabs on
the hood.
2. Also be careful to keep the top and
bottom of the hood parallel with
the top and bottom of the camera.
The improper fitting will result in
the picture frame with darkened
corners, known as vignetting.
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How to use round hoods
The round hood can be screwed into
or fitted on the front ring of the lens.
But the 49mm screw-in type cannot
be fitted on the lens in reverse order.
2. The rubber type can be folded, as
shown, when it is not in use, and
in the case of 49mm type, you can
put the lens cap on the lens with
the hood folded. But other rubber
hoods must be removed to put
the lens cap on.
How to use built-in hoods
Use the lens with the built-in hood by
fully extending the hood. Since the
hoods for the 300mm, 600mm and
250—600mm zoom are screw-fixed-type,
slide them in and out while turning
Holding the lens as shown, turn the
hood to the right, slide it out, and turn
it to the right to fix. To replace the
hood, follow the reverse procedure.
Lenses with built-in hoods:
135mm /2.8, F* 300mm f/4.5,
F* 600mm f/4, F* Zoom 250—600mm
e With the F 135mm f/2.8, you can use
the camera's built-in flash (RTF) even
with the built-in hood set up for use.
Screw-in-type filters
These filters are screwed into the front
rim of the lens. Make sure you get
the proper size filter for each lens.
SMC filters
The reflection from the filter causes flare
that deteriorates the quality of a picture.
So the use of Pentax SMC multi-coated
filters that virtually eliminate flare is
Applicable lenses
28mm f/2.8,
50mm f/1.4 & 1.7,
Zoom 35-70mm f/3.5—4.5,
Zoom 70—210mm f/4—5.6
135mm f/2.8.
Macro 50mm f/2.8
Zoom 24—50mm f/4,
28—80mm f/3.5-4.5.
35—105mm f/4—5.6,
35—135mm f/3.5—4.5,
Macro 100mm f/2.8
300mm f/4.5 EDCIF)
Precautions on filters
* Do not apply a filter and the hood on
the F Z 35—105mm lens at the same
time, to avoid vignetting at picture
e A filter, when attached to your lens,
becomes part of the optical system. So
handle it as carefully as you do the
lens. Keep it free from any dirt or dust,
and take care not to scratch the filter
element. Using two filters, one over
the other, should be avoided as it
results in producing an unfavorable
image. The polarizing filter can be used
in combination with other filters.
Polarizing filter and vignetting
When you use the Polarizing filter on
your KAF-mount camera, use the
circular type alone. The circular type is
made of two glass elements and thicker
than the ordinary filter. So when it is
used on the following lenses, the picture
taken may have darkened corners.
Size SMC Pentax
49mm | Zoom 35-70mm f/3.5—4.5
58mm | Zoom 28—80mm f/3.5—4.5
35-105mm f/4—5.6
Focus-range limiter
The F Macro 50mm f/2.8 and 100mm
f/2.8 lenses focus from infinity down to
life size (1X). The 100mm f/2.8 extends
much more than the ordinary lens, so it
is equipped with the focus-range limiter
to heighten the efficiency of the auto-
focus function. By setting the focus-
range limiter, you can control the
amount of extension so that the focus
range on the close-distance side is
limited to approx. 0.57 (1/4X) — 0.31
(1X) meters, and that on the long-
distance side to approx. 0.63 meters
~ infinity. Use the limiter effectively,
depending on the camera-to-subject
When these macro lenses are used on
the KAF-mount camera, the built-in
flash (RTF) does not fire.
The magnification scale is indicated by
denominators (in white) on the distance
scale. 5‘ means ‘1/5X." When you
have predetermined the magnification,
set the magnification in the MANUAL
focus mode, and focus by moving
the whole camera back and forth.
If you use the optional accessory Macro
Focus Rail, focusing will be made easier.
As shown above, as you set the knob
on the focus-range limiter at “LIMIT”
with the distance scale set at ==, the focus
range is set on the long-distance side
(general-purpose shooting), and as you
do the same thing with the distance
scale at the minimum focus distance,
the focus range is set at the close-
distance side (macro shooting). To
cancel the limiter, set the knob at
e When the magnification scale is set
near 4 (1/4X), the knob may not turn.
5 4 1/%
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SMC Pentax-F Zoom lenses are the
“two-action” type having two separate
Zoomring rings: the front one for focusing and
the rear one for zooming. You can
choose the focal length you desire by
turning the zoom ring.
When the focal length is changed by
turning the zoom ring, slight shift of
focus may occur. So, after zooming and
before releasing the shutter, make sure
the image is in focus by using the auto-
focus function or the focus-indication
(F1) system.
Focusing ring
Aperture index Aperture index
(for longer focal {for shorter focal
lengths) lengths)
® To set the aperture to A (Auto),
align the aperture-A index with the
red-bar index, irrespective of a focal
length chosen, Refer to page 6.
Macro shooting
The zoom lenses listed in the table have
the macro mechanism that enables you
to take close-up pictures. To set the lens
at MACRO, first set the zoom ring at
the longest focal length (green figures)
and then use more force to turn it to
the right until it stops. To cancel the
macro setting, take the reverse
procedure. Moreover, when using
the zoom lens in the auto-focus mode,
the in-focus range becomes narrow, so
| 0
A 221611 8563
e Macro shooting is apt to cause
camera shake, so it is desirable to use
find out the position of focus by a tripod.
moving the camera itself back and
forth, or by turning the zoom ring
Lens Magnification (x) Distance (m)
20—BOmm f/3.5—4.5 0.25 0.4
39—/0mm f/3.5—4.5 0.25 0. 32
3Jo—105mm 1/4—5. 6 0. 25 0. 47
35—135mm f/ 3.5—4.5 0.25 0. 75
(When lenses are set at MACRO's extreme end}
Infrared index
In the case of the zoom lens, the degree
of focus compensation in infrared
photography varies according to the
focal length. As shown, there are
infrared indexes for each focal length
in the distance-scale window.
Compensate for the focus according to
the focal length in use. With the lens
having the indexes only for the longest
and shortest focal lengths, such as 70—
210mm, obtain the indexes for
intermediate focal lengths and
compensate for the focus by using
the scale as a guide.
10 5 f
75 2 a
24 355
28 24
50 20| #
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The SMC Pentax-F* 300mm f/4.5 ED
{IF} lens is a high-performance optic
whose extra-low dispersion optical
elements reduce chromatic aberration to
a level not possible with conventional
optical glass, and assures improved
contrast and better image quality,
The inner-focus (IF) mechanism also
used in this lens improves the imbalance
of weight caused by the lens extension.
When using this lens on the KAF-mount
camera, set both in the auto-focus mode
or in the MANUAL-focus mode. As you
push the switch ring forward as shown,
the lens will be set in the auto-focus
mode. To set it in the MANUAL mode,
pull the switch ring toward you.
If the switch ring is not properly set,
the camera's mode is preferred, and
focusing ring may turn automatically.
Caution on = (infinity) mark
This telephoto lens is constructed so
that the focusing ring stops slightly past
the == mark, This is because temperature
change, hot or cold, causes the position
of focal point to shift, making the lens
focus on the point past the = scale.
Even when shooting at infinity, release
the shutter after making sure the image
is in focus through the focus-indication
Tripod socket
The tripod socket on this lens can be
rotated every 90 degrees to the direction
you desire, by loosening the LOCK
screw. When actually shooting, be sure
to tighten the screw firmly to lock
the lens into place. The tripod socket
can be removed by pulling it after
loosening the screw at right with a coin
and then loosening the one at left.
E ar
m oF ? “e SE oF
WIDE- ANGLE SMC Pentax-F 28mm 1/2.8 7-7 T5 FA
STANDARD SMC Pentax-F 50mm f/1.4 6-7 47 FA
SMC Pentax-F 50mm í1.7 5-6 47 FA
TELEPHOTO SMC Pentax-F 135mm [£/2.8 [IF] 7-8 18 FA
SMC Pentax-F*300mm f/4.5 ED[IF] 7-9 8.2 FA
SMC Pentax-F*600mm f/4 ED[IF] 14 4.1 FA
MACRO SMC Pentax-F Macro 50mm {/2.8 7-8 47 FA
SMC Pentax-F Macro 100mm {/2.8 8-9 24.5 FA
Z00M SMC Pentax-F Zoom 24-50mm {/1.4 10-11 84-47 FA
SMC Pentax-F Zoom 28-80mm f/3.5-4.5 9-12. 75-30.5 FA
SMC Pentax-F Zoom 35-70mm {/3.5-4.5 8-8 63-34.5 FA
SMC Pentax-F Zoom 35-105mm [/4-5.6 12-14 163-23.5 FA
SMC Pentax-F Zoom 35-135mm f/3.5-4.5 12-16 63-18 FA
SMC Pentax-F Zoom 70-210mm f/4-5.6 9-13 34.5-11.8 FA
SMC Pentax-F*Zoom 250-600mm f/5.6 ED[IF] 15-17 9.9-4.1 FA
SMC Pentax-AF Adapter 1.7 4-6 — FA
e F* = High-performance, compact lens using special glass elements.
« ED = Achromatic lens using the Extra-low Dispersion glass
a IF = Inner Focus
# FA = Fully automatic
& sn и > x
55 $ SE ES = Rn
& EL ESS 7
м e oo SS NE a oF oF
22 0.3 0.98 0.13 64 x 37 180 6.4 49
22 0.45 1.5 0.15 65 x 37 230 8.1 49
22 0,45 1.5 0.15 65 х 37 200 7.1 49
32 0.7 2.3 0.25 68 . x 80 395 13.9 52
32 2.0 6.6 0,17 84 160 880 30.8 67
32 5.0 16.4 0.13 181 413 5800 205 43(150)
32 0.195 0.6 1.0 68 X 70 385 13.6 52
32 0.306 1.0 1.0 74 =103.5 590 20.7 58
dé 0.4 1.3 0.15 69.5% 67 380 13.3 58
22-32 0.8(0.40) 2.6(1.3) 0.11(0.25) 69.5% 75 390 13.7 58
22-32 0.7(0.32) 2.3(1.0) 0.1(0.25) 67 x 50 235 8.3 49
22-32 1.4(0.42) 4.6(1.4) 0.1(0.25) 72 * Ti 374 13.2 58
22-32 1.6(0.75) 5.2(2.5) 0.1(0.25) 71 x 91.5 485 17.0 58
32-45 1.1 3.6 0.25 71 x 98.5 555 19.4 49
32 3.5 11.5 0.2 149 x434.5 4900 173 430112)
— т = 64 x 26 135 4.7 —
® Figures in { } of Filter Size are the thread diameter of the frant ring.
Mote: Lens length does not include mount portion.
Mounted between the SFX/SF1 camera
body and the SMC Pentax lens, this
Adapter enables you to use the lens in
the auto-focus mode. It also extends
the focal length of the lens in use by
Usable lenses
® SMC Pentax-A lenses (KA-mount
lenses) listed in the table at right.
® SMC Pentax or Pentax-M lenses
(K-mount lenses) having a maximum
aperture of f/2.8 or faster, except Soft
85mm f/2.2.
List of Usable SMC Pentax-A Lenses
16mm f/2.8
20mm f/2.8
24mm f/2.8
28mm f/2
28mm f/2.8
35mm f/2
36mm f/2.8
50mm f/1.7
50mm f/1.4
50mm f/1.7
50mm f/2
Medium Telephoto
A*85mm f/1.4
100mm f/2.8
A*135mm f/1.8
135mm f/2.8
A*200mm f/2.8ED
A*300mm f/2.8EDIIF)
Ultra Telephoto
400mm f/2.8ED(IF)
35—105mm f/3.5
(Macro Setting not
The soft cases for SMC Pentax-F lenses
show their code numbers at the bottom.
Make sure that you get the proper size
case for each lens, referring to the table
shown here.
SMC Pentax-F lenses
28mm f/2.8.
50mm f/1.4,
50mm f/1.7,
Zoom 35-70mm f/3.5-4.5.
AF Adapter 1.7
135mm f/2.8.
Macro 50mm f/2.8,
Zoom 24-50mm f/4,
Zoom 28-80mm f/3.5-4.5
Zoom 35-105mm f/4-5.6
Macro 100mm f/2.8,
Zoom 35-135mm f/3.5-4.5,
Zoom 70-210mm f/4-5.6
F* 300mm f/4.5 EDCIF)
F* 600mm f/4 EDCIF),
F* Zoom 250—600mm
15.6 EDCIF)
All Pentax lenses purchased through
authorized bona fide photographic
distribution channels are guaranteed
against defects of material or work-
manship for a period of twelve months
from date of purchase. Service will be
rendered and defective parts will be
replaced without cost to you within
that period, provided the equipment
does not show evidence of impact,
sand or liquid damage, mishandling,
tampering, operation contrary to oper-
ating instructions, or modification by an
unauthorized repair shop. The manu-
facturer or its authorized representa-
tives shall not be liable for any repair
or alterations except those made with
its written consent and shall not be
liable for damages from delay or loss of
use or from other indirect or con-
sequential damages of any kind,
whether caused by defective material
or workmanship or otherwise: and it is
expressly agreed that the liability of
the manufacturer or its representatives
under all guarantees or warranties,
whether express or implied, is strict-
ly limited to the replacement of parts
as hereinbefore provided. No refunds
will be made on repairs performed by
non-authorized Pentax service facilities.
Any Pentax lens which proves defec-
tive during the 12-month warranty
period should be returned to the
dealer from whom you purchased the
equipment or to the manufacturer. If
there is no representative of the manu-
facturer in vour country, send the
equipment to the manufacturer, with
postage prepaid. In this case, it will
take a considerable length of time
before the equipment can be returned
to you owing to the complicated
customs procedures required in Japan
in importing and re-exporting photo-
graphic equipment. If the equipment is
covered by warranty, repairs will be
made and parts replaced free of charge,
and the equipment will be returned
to you upon completion of servicing.
If the equipment is not covered by
warranty, regular charges of the manu-
facturer of of its representatives will
apply. Shipping charges are to be
borne by the owner. If your Pentax
lens was purchased outside of the
country where you wish to have
serviced during the warranty period,
regular handling and servicing fees
may be charged by the manufacturer's
representatives in that country. Not-
withstanding this, your Pentax camera
or lens returned to the manufacturer
will be serviced free of charge accord-
ing to this procedure and warranty
policy. In any case, however, shipping
charges and customs clearance fees are
to be borne by the owner. To prove
the date of your purchase when re-
quired, please keep the receipts or bills
covering the purchase of your equip-
ment for at least a year. Before sending
your equipment for servicing, please
make sure that you are sending it to
the manufacturer's authorized repre-
sentives or their accredited repair
shops, unless you are sending it direct-
ly to the manufacturer, Always obtain
a quotation of the service charge, and
only after you accept the quoted
service charge, instruct the service
station to proceed with the servicing.
This warranty policy does not apply
to Pentax products purchased in the
US.A., UK. or Canada. The local
warranty policies available from Pentax
distributors in those countries super-
sede this warranty policy.
Specifications are subject to change without notice. Copyright 6 Asahi Optical Co., Ltd. 1987
070201 /ENG 9/89 Printed in Belgium
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