U.M. 3

Acceptable Range of Built-In Exposure Meter
The built - in exposure meter couples to the fol- example , the exposure meter couples fully
lowing range off / stops and shutter speeds with within the range of f/ 1.4 at 1/4 sec. ( EV 3 J and
respective film speeds. When using the Canon f/ 16 at 1/ 1000 sec. ( EV 18 ).
Lens FL 50 mm F 1.4 II and ASA 100 film, for
Film Speed J
Shutter Speed
ASA
25
1
1/ 2
1/ 4 1/ 8
1/
15 1/ 60
1/ 125 1/ 250
DIN 15
1/ 30
---
---
ASA
50
1/ 2 1/ 4
1/ 8
1/30
1/ 60 1/ 125
1/ 250 1/ 500
DIN 18
1/ 15
J ASA
100
1/ 4 1/ 8
1/ l 5 1/
30
1/ 60
1/ 125
1/ 250
1/ 500
1; 1ooo j
I DIN
21
-
"
ASA 200
1/ 8
1/
15
1/ 30 1/ 60
1/ 125
1/ 250
1/ 500 1/ 1000
DIN 24
...
---
---
ASA 400
1/ 15
1/ 30
1/ 60
1/ 125
1/ 250 1/ 500
1/ 1000
DIN 27
.. .
...
---
---
ASA
800
1/ 30
1/ 60
1/ 125 1/ 250
1/ 500
1/ 1000
DIN 30
... . . . . ..
---
---
ASA 1600
1/ 60 1/ 125
1/ 250
1/ 500
1/ 1000
DIN
33
... . .. . .. . ..
ASA 2000
1/ 125 1/ 250
1/ 500
1/ 1000
DIN 34
... ...
. . .
. .. . ..
f/ stops
I f/ 1-22 1 f/ 1-22 1 f/ 1-22 1 f/ l-22 J f/ 1-22
f/ 1-22 1 f/ 1-22 f/ 1-22 1 f/ 1-16
20
Focusing
While looking through the viewfinder, rotate the
focusing ring. It is in focus when the images
within the circle in the center of the viewfinder
coincide and the unclear images become clear .
• An
optical curve is sometimes visible in the
lower part of the viewfinder according to the
angle of the light entering the viewfinder. This
is a reflection of the two-way mirror added onto
the condenser lens in the TTL exposure
measurement system and is not a mechanical
defect.
• The center of the viewfinder ( circular section )
is a prism screen type rangefinder for focusing
made up of microscopic prisms .
Out of focus
In focus
21