Range Of Light Measurement - Honeywell Pentax Spotmatic Operating Manual

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Depth.of.field
table: Super. Takumar 50mm lens
Scale
l' 6"
2'
~
f Setting
l' 6.12"
·1'11.8"
2'11.5"
f/1.4
l' 6.13"
2' 0.2"
3' 0.6"
l' 5.9"
1'11.6"
2' 11.3"
f/2
l' 6.1"
2' 0.4"
3' 0.8"
2'10.9"
l' 5.8"
1'11.5"
f/2.8
l' 6.2"
2' 0.5"
3' 1.1"
l' 5.6"
1'11.4"
2'10.6"
f/4
l' 6.4"
2' 0.6"
3' 1.7"
l' 5.5"
2'10"
l' 11.2"
f/5.6
l' 6.5"
2' 1"
3' 2.3"
l' 5.4"
1'10.8"
2' 9.1"
f/8
l' 6.6"
2' 1.3"
3' 3.4"
2' 8.2"
l' 5.2"
1'10.4"
fill
l' 7"
3' 4.8"
2' 1.9"
2' 6.7"
l' 4.8"
l' 9.7"
f/16
l' 7.3"
2' 2.9"
3' 7.6"
Depth.of.field
table: Super. Takumar 55mm lens
Scale
1'6"
2'
3'
~
f Setting
I' 5.9"
1'11.8"
2'11.5"
f/1.8
l' 6.1"
2' 0.2"
3' 0.6"
l' 11.8"
2'11.4"
l' 5.9"
f/2
2' 0.2"
3' 0.6"
l' 6.1"
l' 11.6"
2'11.2"
l' 5.9"
f/2.8
2' 0.4"
3' 0.8"
l' 6.1"
l' 5.8"
l' 11.5"
2'10.8"
f/4
3' 1.2"
l' 6.2"
2' 0.5"
l' 5.6"
1'11.4"
2'10.4"
f/5.6
2' 0.7"
3' 1.8"
l'
6.4"
2' 9.8"
l' 5.5"
I'll"
f/8
2' 1
3' 2.5"
l' 6.5"
II
1'10.8"
2' 9"
l'
5.4"
fill
l' 6.7"
2' 1.3"
3' 3.6"
l' 5.2"
1'10.3"
2' 7.8"
f/16
2' 2"
3' 5.5"
l'
7"
14
10'
30'
3'
5'
15'
4'10.4"
9' 5.6"
13' 9.7"
25' 6.6" 169' 9.2"
36' 4.2"
5' 1.7"
10' 7.2"
16' 4.9"
9' 3.1"
13' 4.3"
24' 0.2" 118' 3.5"
4' 9.8"
5' 2.4"
10'10.6"
17' 1.2"
39'11.8"
22' 3"
4'
9"
8' 11.9" 12' 9.6"
18' 1.4"
46' 1.4"
5' 3.4"
11' 3.2"
20' 0.4"
8' 7.4"
12' 0.6"
4' 7.7"
59'11.6"
5' 5"
11' 11.2" 19'11 "
8' 1.9" 11' 2"
17' 8.3"
4' 6.2"
12' 11.2" 22' 10.7" 100' 1.3"
5' 7.2"
7' 6.8"
10' I"
15' 0.7"
4' 4.1"
14' 9.5" 29' 7.2"
5'10.9"
00
6' 11.3"
8'11.8"
4' 1.6"
12' 8.4"
18' 0.6" 46' 9.7"
6' 4.2"
00
6' 1.2"
7' 7.2"
10' I"
3'10"
28' 7.6"
7' 3"
00
00
10'
15'
30'
5'
13' 9.7"
25' 6.4" 168' 2.4"
4'10.4"
9' 5.6"
5' 1.7"
10' 7.2"
16' 5"
36' 4.7"
13' 8.3"
25' 1.3" 151' 4.8"
4'10.3"
9' 4.9"
10' 8"
16' 7.1"
37' 3.2"
5' 1.8"
23' 7"
4' 9.6"
9' 2.3"
13' 2.8"
41' 3.4"
5' 2.6"
10'11.5"
17' 4"
4' 8.6"
8'10.7"
12' 7.1"
21' 7.2"
18' 6.7"
49' 2.8"
5' 3.8"
11' 5.3"
8' 6.1"
11'10.1"
19' 5.2"
4' 7.4"
66' 3.4"
5' 5.4"
12' 1.7"
20' 6.2"
16'10.7"
4' 5.6"
8'
10'10.3"
13' 4.4"
24' 4.6" 138' 2.8"
5' 8.2"
9'10.1 "
14' 6.2"
4' 3.6"
7' 5.4"
31'10.8"
5'11.8"
15' 3.7"
00.
6' 8.2"
8' 6.2"
11' 9.4"
4' 0.6"
6' 6.8"
20' 3"
66' 9.2"
00
The exposure meter of the Spotma-
00
tic measures the brightness of the
ground glass.
should be turned on after you have
00
focused your subject on the ground
glass. The following table shows the
00
range of the meter's light measure-
84'11.6"
ment, and should not be interpret-
00
ed as the camera's
59' 6.4"
f/stop-shutter
00
As you will note from the table be-
42' 6.8"
low, with an ASAlOO film, you may
00
use any shutter
29'10.2"
to 1/1000 sec. in combination
00
21' 9"
00
B
~
15'
20
00
• (25)
32
• (40)
• (50)
64
• (80)
100
00
• (125)
• (160)
00
200
• (250)
00
• (320)
108' 2.3"
400
l~,
~
00
75' 9.5"
• (500)
,
iG,
00
• (640)
54' 2.3"
800
Xi
00
i;
• (1000)
37'11.9"
• (1250) '(is;)
00
1600
27' 8.2"
00
The area A indicates
shutter
speed index is black and the meter needle moves, the meter is NOT operating
19'
1"
When Ihe mele, needle;s centered with Ihe shutler speed dIal sel al Busing ASA 20-50
00
indicates thai llu Uilct shutler speed required;s

Range of light measurement

any aperture
meter needle to the midpoint in the
Therefore, the meter
viewfinder.
aperture
settings
termined by the minimum and max-
imum apertures
used.
For example, with the 50mm
f/1.4 lens and ASAlOOfilm, an aper-
total range of
ture from f/l.4 (the maximum aper-
ture of this lens) to f/16 (the mini-
speed combinations.
mum aperture)
any shutter
speed from 1 sec.
1/1000 sec. that will bring the meter
needle to midpoint.
with
1
1
1
1
1
1
2
15
30
4
8
-~~
I
.
;'i
D
'"
the reading
range of the meter.
The area B indicates
seconds. Please expose you' pidure for
2
that
will bring the
The total range of the
is, of course, de-
of the lens being
may be used with
speed from 1 sec. to
1
1
1
1
1
60
125
250
500
1000
that although
the
properly.
films, Ihis
seconds
2
15

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