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THE AMATEUR PHOTOGRAPHER AND CINEMATOGRAPHER ( SUPPLEMENT )
MA Y 20, 1936
Instructions lor assembling the Calculator are given in this week's issue 0/ The Amateur Photographer and Cinematographer.
The following instructions tor use should be cut out and affixed to back cover 0/ Calculator.
1 . First ascertain the "A.P. Film Speed Factor " from the table at bottom right-hand corner.
2. Set "Film Speed Factor,” on top Disc (I ) opposite black square seen through slot, by turning Disc (2). If a colour filter is used, the Speed Factor is set opposite " Filter Factor ” instead.
3. Turn Disc (3) to set "Subject Contrast” opposite the "Light Factor " of the hour and month given in table below the dial.
A. Finally, turn all discs together to see “ Weather " opposite the number of the "Subject Factor.” The correct exposures for that subject can now be read off for all stops from f/2 to f/32.
CUT HOUND OUTSIDE EDGES ONLY OF ALL PARTS
SEND ALONG THU CENTRE UNE
SUBJECT FACTOR
outdoor subjects:
0
CLOUD AND SKY STUDIES:
2
OPEN SEASCAPES AND SNOWSCAPES:
4
DISTANT VIEWS OPEN BEACH SCENES
SHIPS ON OPEN SEA -FLYING AEROPLANES!
6
LIGHT FOREGROUND SUBJECTS —
BEACH SCENES WITH FIGURES —
OPEN SQUARES WITH UGHT BUILDINGS —
open landscapes:
8
AVERAGE LANDSCAPES WITH FIGURES
WELL LIGHTED STREET SCENES.’ j
IO
STREET SCENES WITH BUILDINGS IN SHADOW
DARK FOREGROUND SUBJECTS [
FIGURES NEAR CAMERA:
li
PORTRAIT GROUPS
12
HEAD & SHOULDER PORTRAITS . DARK OBJECTS,
OR STILLLIFE "CLOSE UPSINTHE OPEN :
14
BENEATH TREES j— LIGHT FOLIAGE
ie
BENEATH TREES MEDIUM FOLIAGE : j
17
BENEATH TREES HEAVY FOLIAGE I
INDOOR SUBJECTS :
FILM SPEED FACTOR:
18
STUDIO portraits:
19
HOME PORTRAITS, LIGHT.
21
HOME PORTRAITS. MEDIUM.
23
HOME PORTRAITS. DARK.
24
LIGHT INTERIORS l
27
MEDIUM INTERIORS
29
DARK INTERIORS 1
A.R*
H £ D.
SCH.
01 N
1
2000
30°
20<0
2
1200
28°
l8xo
3
750
26°
! 6/fo
4
400
23°
\3/J
5
250
21°
mA
6
200
20°
io/Z
7
150
19°
9 /o
BEND ALONG THIS CENTRE UNE