The exposure meter of the Retinette IB and IIA is coupled to the speed and aperture setting of the shutter (p. 12).
1. Set film speed.
2. Set shutter for daylight operation.
3. Aim camera and set exposure.
1. Set the film speed on the shutter in ASA or DIN.
2. Turn the shutter ring on Retinette IIA so that the "sun" symbol lies against the black index mark. On Retinette
IB set the ring to the required speed e.g. 1/60 for general outdoor work.
3. Looking through the viewfinder, a bright triangle is visible below the frame lines. On Retinette IIA turn the
shutter rim (on Retinette IB the aperture scale knob) to align the black pointer, also visible, with the triangle.
Exposure is now set and no further adjustment is needed. To adjust for filters, see page 58.
In extreme conditions of lighting the triangle disappears on turning the shutter rim. This indicates that no
picture is obtainable in the prevailing light.
DAYLIGHT EXPOSURES
Add the respective figures in Tables 1,2 and 3. The sum is the light value to be
set on the shutter. For Retinette models without light value scale convert the
light value to apertures and speeds with Table 4. (Set the shutter to the nearest
marked speed if necessary -- e.g., 1/25 for 1/30, and so on.)
1. Subject and Weather
Subject
Clear
Sun
Cloudy
Light
Cloudy
Medium
Dull
Distant landscape
13
12
11
10
Landscape, light foreground
12
11
10
9
Open streets, light buildings
11
10
9
8
Figures and groups in the open
10
9
8
7
Figures and groups in the shade
9
8
7
6
Average Interiors
3
2
1
0
2. Month and Time
A.M.---P.M.
April
to Aug.
Sept., Oct.,
Feb., Mar.
Nov.
to Jan.
11 to 2
3
3
2
9-11 to 2-4
3
2
1
7-9 to to 4-6
2
0
--
3. Film Speed
ASA
25
-1
50
0
100
+1
200
+2
4. Light Values (Sum of Tables 1+2+3) and Exposures
L.V.
f
2.8
f
4
f
5.6
f
8
f
11
f
16
f
22
3
1
2s
4s
8s
15s
30s
60s
4
1/2
1
2s
4s
8s
15s
30s
5
1/4
1/2
1
2s
4s
8s
15s
6
1/8
1/4
1/2
1
2s
4s
8s
7
1/15
1/8
1/4
1/2
1
2s
4s
8
1/30
1/15
1/8
1/4
1/2
1
2s
9
1/60
1/30
1/15
1/8
1/4
1/2
1
10
1/125
1/60
1/30
1/15
1/8
1/4
1/2
11
1/250
1/125
1/60
1/30
1/15
1/8
1/4
12
1/500
1/250
1/125
1/60
1/30
1/15
1/8
13
--
1/500
1/250
1/125
1/60
1/30
1/15