Polaroid 100 Series User Manual

T1lt.' Alhuda hne ttht: dout'u amber lint' which
fr;tmt:~ tht: fixed image) results from ioddent
light fXIltiinfl. through the frosted glass and the
sliding: mask assembly. The as!i.embly l'Onststs of
two masks linked together and tied 10 the 1'O("us-
ing bar. As the camerJ i~ focused from infinity
10 close-up, the sliding mask moves ~lDd cau~
the Albada line to rontrdcl, I.:ompensating for
the reduced image area.
The inddent light pro-
jects the Albada line to the movuble image aper·
ture plate and it is then renel'led through the
magnifying frame to the beamsplitter. The
dichroic characteristic of Iht beamspliner gives
the Albada Hnt its amber coJor as if passes it 10
the eye lens,
Rangefiilder
Simultaneous
with the projection of the image
through the objective lens, is the projection of
the image through the rangefmder Jens. Where
the image from the objective lens is a rea) fixed
image.
the image coming from-fhe range-finder
lens differs
in that it is movable from left to right.
The rangefindtf image is sent to the eye lens as
follows:
I. The rangefinder lens and the movable image
lens invert the image
and pass it through the
mnror .
.., The mirror reverses the image and projects it
through the opening in the movabJe image
apeflilre pJ:J!t'
to the center of the magnifying
frume.
~~ Passmg through the center of the magnifying
lrume, the image is mverted :Jgain and is pro-
j,:':ie'O onto the beamsplitter.
-L Ai Ihe beamspliner. the image is reversed
J}tafl': Jnd takes on the amber color seen in the
~.~ ,. km.
Till'. m,wJbk rJn?~(lllder image occupks a smal)
amhvr ,,'()!orL'd i.qu>Jre slIllerimposed in the middle
(11 Ihe Il\.~'d Lmagt'.
Shiflw:: 1'( lht' imagt.' i\ ;JL'complished by foclIsing
lil~' ~";ltlI~'f>J A, tIll' foo.:u~ bat move~. il sends lhe
IlHlv:lhk Image lens through a very sm<lli aro.:. This.
Ill(WL'llh'nl ~'uu~c, the inlJge striking the mirror 10
'hili kH or right When Ihe mov>lble Image
m.:rgl.:'''' Willi lhe fixed im3ge, the camera is in
proper lol'u:-,.
TIMERS
Wllh tIll' Inlmdu..:tion of the 300 ljnt~. timer. were
m,Hle :m mlcgr:J1 Nrl of some pack camet'"4!.. The
Modd .no :..Illd 340 ":amera'> feature a mechanical
timer. whHe the Mouel 335. 350, alld 360 cumerJs.
ImvC' elC'('trollic limen>.
Mechanical Timer {Models 330 anu 340)
The mechanical timer is ii sprin~riven device
designed to mea5Ure elapsed time. Figure 2~IO
shows how the timer is set into the rear door
assembly. To help in understanding how the
timer works, think of it as being composed of
three parts: the starr button, the liming: ring. and
the spring-driven gear assembly.
FIG. 2.10 MECHANICAL TIMER
The fjrs:t step taken to operate the timer is to
Wind the arrow until it points to the red dot in
the snm button. Second, the timing ring is
pushed
in and then turned until the desired time
is 'iet under the red dot. Third, the start button
is: pushed to the left. What these operating pro~
cedures actually do can be explained by examin~
ing FigurL' 2·11.
When
tilt' arrow is turned, the mainspring inside
the timer i!l being wound. The action of (Jle
spring. while
it unwinds. drives rhe arrow around.
You can see (hat the spring IS also linked 10 a
"ene:.
of gean.. In addition to controlling the un·
winding of the mainspring. the purpose of the
gears 1s two-fold. One, they provide the sound

Polaroid 100 Series Specifications

General

Brand	Polaroid
Model	100 Series
Category	Digital Camera
Language	English