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Setting the Exposure
Effective f-number for the Magnification and
Camera's f/No.
For Cameras Displaying
f-number
1×
2.8
5.6
3.2
6.4
3.5
7
4
8
4.5
9
5
10
5.6
11.2
6.3
12.6
7.1
14.2
8
16
9
18
10
20
11
22
13
26
14
28
16
32
For Cameras Displaying
f-number
1×
2.8
5.6
3.5
7
4
8
4.5
9
5.6
11.2
6.7
13.4
8
16
9.5
19
11
22
13
26
16
32
1
Stops
3
2×
3×
4×
8.4
11.2
14
9.6
12.8
16
10.5
14
17.5
12
16
20
13.5
18
22.5
15
20
25
16.8
22.4
28
18.9
25.2
31.5
21.3
28.4
35.5
24
32
40
27
36
45
30
40
50
33
44
55
39
52
65
42
56
70
48
64
80
1
Stops
2
2×
3×
4×
8.4
11.2
14
10.5
14
17.5
12
16
20
13.5
18
22.5
16.8
22.4
28
20.1
26.8
33.5
24
32
40
28.5
38
47.5
33
44
55
39
52
65
48
64
80
• With the EOS-1 and EOS-1N/DP/HS, fine spot
metering cannot be used because an exposure
error will result.
• During remote control shooting, etc., when you
5×
16.8
take your eye off the eyepiece, cover the
19.2
eyepiece with the eyepiece shutter or cover.
21
Otherwise, stray light may enter the eyepiece
24
27
and affect the proper exposure reading.
30
33.6
37.8
• With the EOS-3, using a Laser Matte focusing
42.6
screen will enable AE metering at all
48
magnifications from 1× to 5×.
54
60
• Using aperture-priority AE (Av) or Manual (M)
66
picture-taking modes are recommended as it is
78
easy to adjust depth of field and exposure in
84
96
these modes.
5×
16.8
21
24
27
33.6
40.2
48
57
66
78
96
ENG-8
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