
Range of light measurement
The exposure meter of the Spotmatic measures the brightness of the ground glass. Therefore, the meter should be turned on after you have focused your subject on the ground glass. The following table shows the range of the meter's light measurement, and should not be interpreted as the camera's total range of
ASA
B
1
1
/2
1
/4
1
/8
1
/15
1
/30
1
/60
1
/125
1
/250
1
/500
1
/1000
20
∙25
32
∙40
∙50
64
∙80
100
∙125
∙160
200
∙250
∙320
400
∙500
∙640
800
A
∙1000
∙1250
1600
∙ 2000 B
∙ 2500
3200
The area A indicates the reading range of the meter. The area B indicates that although the shutter speed index is black and the meter needle moves, the meter is NOT operating properly.
When the meter needle is centered with the shutter speed dial set at B using ASA 20~50 films, this indicates that the exact shutter speed required is 2 seconds. Please expose your picture for 2 seconds.
Reproduced for Historical & Reference purposes by Paul M. Provencher - | 16 |
http://whitemetal.com |
|