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Another
Method.
Another wayof making short.time exposures
which has much to recommend it is as f ollows :
Hold the palm of the hand before the front
of the Koclak, so as to cover the lens and ex-
clude all light (see Fig. III).
Press the reiease
to open the shutter;
remove the hand ancl
give the proper exposure; replace the hand
in front of lens and again press the release to
close shutter,
F r c . I I 1 .
Some experienced
amateurs
prefer
this
method with any camera not having a pneu-
matic release, as it practically does away with
all danger of jarring the instrument during
exposure, and thus blurring the picture.
Tunr rnl; Kr:y.
After making the Autographic
record, turn
a new fihn into position, as descnbed befoie.
See page 29,
Tun Kon.l,x rs Nor'v Rr,:.lr>y r,'on rsn Nr,:xr
Ixrunron Exposunr.
Follow the directions given heretofore
for
each successive exPosure.
\,Vhen the last Interior
Exposure is made'
adjust the shutter for instantaneous exposures
as before directed.
T i m e
N e e d e d
l o r I n t e r i o r
E x p o s u r e s '
Tlie following
table gives the time of the
exposure requirecl under varying conditions
of
tlght with stop /.10 in the lens'
If stop /'1r is
used, give only one-half the time'
with /'7'7
give one-fourth the time, if stop f'22 is used
give twice the time of the table, al f '32
give
iour times the time of the table'
'fhe smaller
the stop the sharper the picture'
Stop No' 16
gives the best average results for interiors'
White walls and more than one window:
bright sun outsicle,- 4 seconds;
hazy sun' l0seconds;
ctctiidY brjght, 20 seconds;
cloudy dull, 40 seconds'
White walls and onlY one window l
brie'ht sun outside, 6 seconds;
'haaY sun. 15 seeon'Is; -
ctorittY bright' :10 seconds;
cloudY dull. 60 seconds'
Medium colored walls and hangings and more
than one window:
brisht sun outside' 8 seconds;
hal.Y sun, 20 seconds;
cloritt.Y brignt' 40 secon(ls;
cloudi dull, 80 seconds'
Medium' colored walls and hangings and orrly
one window:
briEht sun outside, 12 seconds;
hazy sun, 30 seconds;
cloridY bright, 60 seconds;
cloudY dull' 120 seconds'
\-
(32)
(3r)
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