Canon EX AUTO - Page 33

Guide Number Calculation Chart for Canolite 0 (Unit: ml
fl
stop
3.5
4
5.6 8
11 16
ASA
3
2
1.5 1
0.8 0.6
100
]
ASA
3
2
1.5
1
0.8
..
200
OJ
u
(I)
..
u
c:
..
ASA
...
2
1.5
1
0.8
0.6
.!!!
80
C
ASA
1.5
1
0.8 0.6
25
When Using Canolite 0 besides the CAT
The guide number changes according to the ASA film
speed. Therefore, the relation between photographing
distance and f/number also changes according to the
film to be used. Here, we have indicated the combina-
tions of f/number and photographing distance of film
speeds most frequently used. For example, when using
a
film with an ASA film speed of 100 and the photo -
graphing distance
is 2 meters, the aperture is set between
F4 and FS.6. The reverse method of giving priority to
the f/number is also possible.
• Photography
with proper exposure is possible even
immediately after the pilot lamp lights up .
•
The marginal light volume is slightly insufficient
when using the EX3Smm F3.S lens, but this is warran~ 
able from a practical point of view.
33