Canon 2540A002 Camera Lens User Manual


 
ENG-6
•To prevent camera shake, use a tripod and the
Remote Switch (sold separately).
•For magnification-priority macro photography, a
focusing rail (commerically available) will make
focusing easier.
With high-magnification shots, the viewfinder
image will darken, making it difficult to focus.
Using Angle Finder C (sold separately) will
make it easier to focus.
•To check the depth of field, refer to the Depth-of-
field Table or use the camera’s depth-of-field
preview.
With the lens attached to the camera, the in-
focus indicator in the viewfinder will not display
properly.When focusing, do not rely on the in-
focus indicator.
With high-magnification macro shots, the
working distance (distance between the front of
the lens and the subject) becomes very short.
Be careful not to bump into the subject.
Focusing
[
mm
]
100
90
80
70
60
40
50
1×
3×
4×
5×
2×
0
Magnification and Working Distance
Magnification
f/2.8 f/4 f/5.6 f/8 f/11 f/16
1× 0.396 0.560 0.792 1.120 1.584 2.240
2× 0.148 0.210 0.297 0.420 0.594 0.840
3× 0.088 0.124 0.176 0.249 0.352 0.498
4× 0.062 0.088 0.124 0.175 0.247 0.350
5× 0.048 0.067 0.095 0.134 0.190 0.269
Depth-of-field Table
[mm]
COPY