a - Lens-Club.Ru
Names of parts / Special notes +------..-=+1=:=:iv0.0osoocaos
Basic lens terminology
Lens construction ..
Comparative shots
Changing lenses ---=.===.......osiasss
FOCUSIMO duren a E trono nee a Re
Standard lens
Telephoto lenses
Wide-angle lenses -.........
Panfocus lens
Zoom lens sa
Filters and close-up attachments — --............eenee...
Lens care ... a
Warranty policy
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О © О В ю — © © 00 1 О сл + № —
Filter thread
Focusing ring
Distance index
Distance indicator
Barrel grip
® To determine the 35mm format focal length equivalence of a Pentax-110 lens,
multiply its focal length x2 (e.g. 110 format 50mm lens = 35mm format
100mm lens).
® There are no aperture settings on Pentax 110 lenses. Aperture is set
automatically by the diaphragm mechanism of the camera’s programmed
shutter system. The aperture range is f/2.8 — f/13.5.
The number of millimeters that desig-
nates a lens — such as the “24mm” in
"Pentax-110 24mm lens’ — indicates
the focal length of that lens.
Focal length is the distance between
the point of focus and the film plane.
By increasing the focal length, you
increase the size of any object framed
by the camera, in the same way as
a telescope gives you a closer look at
things. And, like a telescope, a lens
with a long focal length (‘“telephoto’’)
decreases the breadth of you field
of vision.
This is expressed as a narrower angle
of view; the angle formed by two lines
extended from the point of focus to
diagonally opposed corners of the
picture frame when the lens is focused
to infinity.
That's why the distance between
camera and target is “cut in half” when
the 50mm lens is used in place of
the 24mm standard lens; and why the
shorter focal length/wider angle of
view of an 18mm lens lets you put
more of a panorama into the picture
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Standard 24mm 5—6 47 0.35 30 x 13 255 13
Wide-angle 18mm 6—6 61.5 0.25 34 x 21 30.5 27
Telephoto 50mm 5—5 24 0.9 43 x 27 37.5 57
Telephoto 70mm 5—6 17.2 1.5 51 x 50.5 49 160
PF 18mm 6—6 61.5 — 34 x 21 30.5 29
Zoom 20—40mm 8—8 57.5-31 0.7 54 x 45.2—65.4 49 174
Note: ® PF is a fixed-focus lens.
e There are no aperture settings on Pentax-110 lenses. The aperture
is set automatically by the diaphragm mechanism of the camera's
programmed shutter system. The aperture range is f/2.8 — f/13.5.
Murena |
24mm lens
| |
18mm lens &
PF 18mm lens
Zoom 20~40mm lens
70mm lens
The camera position
was the same for all
these photos. Only
the lens was changed.
18mm 50mm
24mm 70mm
Lens removal
Push upwards on the lens release
lever and turn the lens approxi-
mately 90 degrees to the left until
the lens slips out of the mount.
Lens mounting
1. Match up the red distance scale
index of the lens © with the red dot
on the camera body © and insert
the lens into the body.
2. Turn the lens to the right until it
locks in place, with the red distance
scale index positioned at the top.
Look through the viewfinder eyepiece
and turn the focusing ring of the lens
to bring the image into focus. Sharp
focus can be obtained by focusing on
any part of the focusing screen. To be
assured of pinpoint focusing, however,
check your focus against the spot in
the center of the screen. If the image
is completely intact, focus is precise. If
the image is split or broken, adjust the
focusing ring further until both halves
of the image fit together perfectly.
* For those who find focusing
difficult because of poor eyesight,
corrective eyepieces are available.
e Pentax-110 24mm (equivalent to
a 35mm format 48mm lens)
Weighing just 13 grams and only 13mm
long, this is the smallest Pentax-110
lens. It is also the lens that most
closely matches perspective as seen
through the human eye.
e Pentax-110 50mm
(equivalent to a 35mm format 100mm lens)
® Pentax-110 70mm
(equivalent to a 35mm format 140mm lens)
When the subject of your photograph is far
away, or impossible to get near to, a telephoto
lens helps. For example, the 70mm lens can
make your target seem almost 3 times closer
to you than the standard lens. And, inciden- 24m
tally, it also accepts many of the filters and 70m
attachments for Pentax 35mm SLRs
because its filter thread has a 49mm diameter.
N.B.: Because of their size, these lenses will hit
against the tripod mount if the camera is
mounted directly onto the tripod. To prevent
this, screw in the tripod spacer between camera
and tripod mount.
e Pentax-110 18mm (equivalent to
a 35mm format 36mm lens)
You want to put more of the landscape
into your photograph, or, perhaps, you
want to put several people into
an indoor shot — but you can't get far
back enough to do so with the stand-
' ard lens. That's when you need this
wide angle lens.
The 18mm lens also exaggerates
perspective. It makes near objects
seem larger, and distant objects seem
smaller, than they would to the naked
eye. This trait is often exploited for
dramatic effects.
24 mm
18 mm
e Pentax-110 20—40mm zoom
(equivalent to a 35mm format 40—
80mm zoom lens)
This zoom covers every focal length
between 20mm and 40mm. At 20mm,
it's a wide-angle; at 40mm, it'a a mod-
erate telephoto. And since it offers
every angle of view in-between, it also
encompasses the standard perspective.
As this is a “one touch” zoom lens,
moving the focusing ring back and
forth lets you zoom in and out.
Focusing itself is done the usual way,
by twisting the ring.
The best way to use this lens is to set it
at 40mm, focus on your main target,
then zoom out until you've framed the
shot you want.
Like the 70mm lens, the 20—40mm
zoom has a 49mm diameter filter
thread, so it accepts many Pentax
35mm SLR filters and attachments.
N.B.: Because of its size, this lens will
hit against the tripod mount if the
camera is mounted directly on the
tripod. To prevent this, screw in the
tripod spacer between camera and
tripod mount.
® Filters for 183mm, 24mm, and 50
mm lenses
Skylight and UV filters are available
for all these lenses.
o Filters for the 70mm and 20—40mm
zoom lenses
All 49mm diameter filters made for
35mm camera lenses can also be
screwed into the thread of the 70mm
or the 20—40mm zoom lens.
N.B.: It's advisable to keep a filter over
your lens at all times, to protect its
front element. A UV or skylight filter
is good for this purpose.
e Close-up attachments
Close-up attachments (or lenses) screw
into the filter thread of a lens to enable
closer focusing and higher magnification.
Exposure is automatically controlled
when a close-up attachment is used
with a Pentax-110 lens, and no special
adjustments are required. Focusing is
also done the usual way, but focusing
range and magnification are altered, as
indicated in the chart on the next page.
The 70mm and 20—40mm zoom lens
accept all close-up attachments with
a 49mm diameter.
BC EA Rie on emer ge MNT Too aR Os, «LA
No. Used with — Focusing Range Magnification
W21 18mm wide-angle 16.0 ~ 26.0cm 1/5.7 — 1/11.3X
S31 24mm standard 20.0 ~ 36.0cm 1/6.1 ~ 1/12.7X
S16 24mm standard 15.0 ~ 20.0cm 1/4.1 ~ 1/6.4X
T86 50mm telephoto 48.5 — 91.9ст 1/8.0 - 1/17.1X
T43 50mm telephoto 34.4 — 48.9ст 1/5.4 ~ 1/8.6X
T160 (49mm) 70mm telephoto 85~17.0cm 1/10~ 1/23X
T80 (49mm) 70mm telephoto 6.0 ~ 8.9cm 1/7 ~ 1/11X
T80 (49mm) 20 ~ 40mm zoom (at 20mm) 44.8 ~90.7cm 1/18 ~ 1/39X
T80 (49mm) 20 ~ 40mm zoom (at 40mm) 43.5~88.6cm 1/10~ 1/21X
S40 (49mm) 20 ~ 40mm zoom (at 40mm) 43.5~88.6cm 1/7 1/10X
S25 (49mm) 20 ~ 40mm zoom (at 40mm) 26.1 ~33.0cm 1/5~ 1/6X
* 1X magnification = life size (i.e. the image of the subject on film has the same
dimensions as the actual subject itself.)
e Do not use thinner, alcohol, or
ethylene liquids to clean the lens.
e Use a blower brush to remove dust
and dirt from the surface of the lens.
To remove smears and smudges, clean
front and rear glass surfaces of the lens
by wiping them gently with lens
cleaning paper or a soft cloth
dampened in lens cleaning solution.
e Keep camera and lenses in a cool,
dry, well-ventilated place.
e Always cover the lens with both
front and rear caps when it is not
in use.
e Make it a habit to protect the lens
from rough objects with casing, cloth,
etc. when carrying it in your pocket.
Precaution on Auto 110
Lens Removal
When changing lenses or removing the
lens on the camera, slide the lens
release button upward and, without let-
ting go, turn the lens counterclockwise
until it slips out of the mount. Never
attempt to remove a lens without first
unlocking the mount by sliding the lens
release button upward, as damage to
the mount could result.
All Pentax lenses purchased through authorized
bona fide photographic distribution channels
are guaranteed against defects of material or
workmanship 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 has not been abused, altered, or
operated contrary to instruction. Because the
tolerances, quality, and design compatibility of
lenses other than Pentax lenses are beyond our
control, damage caused by use of such lenses
will not be covered by this warranty policy.
The manufacturer or its authorized represen-
tatives shall not be liable for any repair of
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 consequential 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 expressed or implied, is
strictly limited to the replacement of parts as
hereinbefore provided.
Any Pentax lens which proves defective
during the 12-month warranty period should
be returned to the dealer from whom you
purchased the equipment or to the manu-
facturer. If there is no representative of the
manufacturer in your 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 im-
porting and re-exporting photographic
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 manufacturer
or 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.
Notwithstanding this, your Pentax camera or
lens returned to the manufacturer will be
serviced free of charge according 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
required, please keep the receipts or bills
covering the purchase of your equipment for
at least a year. Before sending your equipment
for servicing, please make sure that you are
sending it to the manufacturer's authorized
representatives or their accredited repair shops,
unless you are sending it directly 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 U.S.A., U.K., or
Canada. The local warranty policies available
from Pentax distributors in those countries
supersede this warranty policy.
Asahi Optical Co., Ltd. C P.O. 895, Tokyo 100-91, JAPAN
“UL Asahi Optical Europe N.V. Weiveldlaan 3-5, 1930 Zaventem Zuid-7, BELGIUM
Pentax Handelsgesellschaft mbH. 2000 Hamburg 54 (Lokstedt), Grandweg 64, WEST GERMANY
Pentax Corporation 35 Inverness Drive East, Englewood, Colorado 80112, U.S.A.
Pentax Canada Inc. 1760 West 3rd Avenue, Vancouver, B.C. V6J 1K5, CANADA
Pentax U.K. Limited Pentax House, South Hill Avenue, South Harrow, Middlesex HA? OLT, U.K.
Asahi Optical Brasileira Ind. e Com. Ltda. Rua Estados Unidos, 1053, Sao Paulo-SP, BRASIL
06636 8/81 Printed in Japan
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