WHEN TO USE THE F
The AF 100P auto flash unit was designed
exclusively for use with the Pentax AUTO
110 in situations where lighting is
insufficient for satisfactory results without
flash. As a rule, use either the AF 100P or
a tripod when the yellow indicator in the
camera viewfinder lights, indicating a low
light reading. These occasions are
principally outdoors at night or indoors in
dim light, Use of flash is required less
frequently with high-speed ASA 400 film
than with ASA 100 or slower films. The
flash beam has a wide spread permitting
sufficient flash coverage for lenses all the
way down to 18mm,
® Do not use the flash when the green
LED indicator in the viewfinder lights,
in which case overexposure will result.
Type
Guide Number
Effective Flash Range
Sensor Reception Angle
Number of Flashes
Recycling Time
Color Temperature
Flash Coverage Angle
Power Source
Mounting
Synchronization
Other Features
Size
Weight
Direct Contact Auto Flash Unit.
10 {ASA 100 in meters).
0.8 - 3.6 meters {2.6 - 12 ft.)
Approx. 18 degrees
150 (with alkaline-manganese batteries)
7 sec. lat full charge)
Equivalent to daylight.
45° vertical, 55° horizontal, (sufficient coverage for
the 18mm f/2.8 wide-angle lens}.
Two AAA size (E92) alkaline-manganese batteries.
Mounts to special contact on top of camera.
Automatically synchronizes with programmed shutter
at 1/30 sec. at programmed aperture of t/2.8 (with
ASA 100 film).
Combined test button/ready lamp; power switch.
63mm x 49mm x 48.5mm
1009/3.5 ozs. with batteries.
AF 100P AUTO FLASH DESCRIP
O Auto sensor
O Flash head
O Battery compartment cover
O Contact pin
O Flash-synch shoe
O Thumbscrew
6 Flash-synch-cap holder
O Power switch
© Test button/ready lamp
O Flash range scale
1. Slide the battery compartment cover
in the direction of the arrow. Then, lift
out from the top with your finger and
remove the cover,
2. Insert two AAA size batteries into
the battery compartment in accordance
with the (+) (—) markings inside the
compartment. Then, replace the cover.
е Do not use rechargeable Nicad
batteries in this unit. For battery re-
placement, use high-performance
batteries.
MOUNTING THE FLASH §
Before mounting the fiash unit, remove
the flash-synch-shoe cap on the camera
body and insert in the synch-cap holder
at the base of the flash unit so that it
does not get lost.
1. Hold the camera and the flash unit
with their backsides facing you. Then,
insert the flash synch contact @ of
the flash unit into the flash-synch-shoe
© on the top of the camera. At the
same time, make sure that the small
contact pins © line up properly for
insertion,
2. Secure the flash unit to the camera
by turning the knurled thumbscrew in
the direction of the arrow.
3.
|
0.8 — m
CONTROL RANGE TP ft
TEST
GN OFF
ASAHI OPT CG. JAPAN CONTROL RANGE 26 ~ 12 f
ON
ASAHI OPT CO. JAPAN
0.8 — 36m ОИ:
SHOOTING
Slide the flash unit's power switch to
ON. {The flash unit synchranizes
automatically with the camera's shutter
system when the power is switched on.)
2. In approximately 5 to 10 seconds the
yellow ready lamp on the back of the
flash unit will light to indicate that the
unit is fully charged. After ascertaining
that the subject is in the effective auto
flash range of the unit (See “Effective
Flash Range,” page 1 1), focus and shoot
in the normal manner with the camera's
film advance lever.
TEST
aN EA
АЗАН! ОРТ co NYT
TEST FLASH .
Testing the Unit: After inserting new
batteries, or when the flash unit has not
been used for a long period of time, it is
a good idea to test it to assure that it
works properly.
1. Turn the power switch to ON.
2. When the ready lamp lights (which
also doubles as the test button), press it
for test flash,
* Normally the flash unit will flash if it
is working properly. The ready lamp will
not light and the unit will not flash,
however, if batteries are improperly
inserted or worn down. If there 15
a problem, and neither of the above is
the cause, the unit may require servicing,
* Always turn the flash unit off after
use to avoid battery wastage.
The auto flash control range of the AF
100P is 0.8 - 3.6 meters (2.6 - 12 ft.) re
when using both ASA 100 and ASA 400
film. Underexposure will result if the
subject is beyond this range; likewise,
overexposure will result if the subject is
too close.
* With practice you will be able to easily
estimate whether or not the subject is
within effective flash range. If you are
not sure, the quickest way to find out is
to focus with the lens and read off
the distance to the subject indicated on
the lens’ distance scale. Correct focus
will be obtained if the subject is within
the effective range.
exposure
0.8 ~ 3.6 meters
2.6 + 12 ft.
FLASH SYNCHRONIZATION &
The AF 100P synchronizes automatical-
ly when the power is switched on with
currently available 110 films up to
ASA 400. With ASA 100 film loaded in
the camera, flash synchronization is
at a shutter speed of 1/30 sec. and a lens
aperture of f/2.8; with ASA 400 film
shutter speed synchronization is 1/30
sec. while the preselected lens aperture
is f/5.6,
e Although there are fewer occasions
when use of flash is required with
ASA 400 film in the camera, the smaller
f/5.6 lensaperture preselected by the
camera when ASA 400 film is used
offers greater depth of field (the portion
of the picture area in front of and
12
behind the subject that is in focus),
Thus, ASA 400 film is useful when
a wider focusing range is desired in
flash photography. On the other hand,
ASA 100 film requires more care in
focusing because of the wider lens
aperture. At the same time, however,
the shallow depth of field at f/2.8 often
produces a unique out-of-focus
“highlighting” effect in the background
and foreground.
e Only use the flash unit when the
yellow LED indicator in the camera
viewfinder lights, If flash is used when
the green LED indicator lights,
overexposure will most likely result.
e The AF 100P may be conveniently left
mounted on the camera even when use
is not required. Be sure to switch the
power off, however, or your pictures
will most likely be overexposed, even if
the flash does not discharge, because of
automatic flash synchronization.
13
SHOOTING POINTERS AND
Do not shoot directly into glass and * Batteries are highly sensitive to cold
other highly reflective surfaces when and performance will deteriorate at
using the flash: otherwise, the glare of temperatures near freezing, Performance
the flash will rebound into the lens and restores to normal when batteries are
ruin your picture. When your subject is warmed. As a precaution against battery
positioned against a highly reflective failure when shooting in freezing
surface, shoot at an angle to prevent the temperatures, keep batteries warm in
flash from rebounding into the lens. Y our pocket, etc., or keep a spare set of
* Remove batteries when not using the warm batteries on hand to substitute in
flash unit for long periods of time as case the others fail,
a precaution against leakage,
® When the flash ready lamp no longer
lights within 30 seconds after switching
the flash unit on, replace both batteries
(otherwise, insufficient flash may result).
14
06056
Asahi Optical Co., Ltd. CP O, 895, Tokyo 1900-91, JAPAN
Asahi Optical Europe N. Y. Werveldlaan 3-5, 1930 Zaventem Zuid-7, BELGIUM
Pentax Handelsgeselischaft mbH. 2000 Hamburg 54 ¡Lokstedt), Grandweg 64, WEST GERMANY
Pentax Corporation 9 Inverness Drive East, Englewood, Colorado 80112, US A,
Pentax of Canada Ltd, 1760 West 3rd Avenue, Vancouver, B.C. V6J 1K5, CANADA
Pentax U.K. Ltd. Pentax House, South Hill Avenue, South Harrow, Middlesex HAZ OLT, UK.
Asahi Optical Brasileira Ind, e Com. Ltda. Rua Estados Unidos, 1053, Sao Paulo SP, BRASIL
Printed in Japan
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