Canon EF 24-70mm f/4L IS USM Instructions Manual page 11

Close-up Shooting
Please focus carefully since the depth of field
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with close-ups is shallow.
The focusing ring distance scale is designed to
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display distances during normal shooting. As a
result, it does not display distances during close-
up shooting.
When the zoom ring is set to the macro range,
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there are cameras that will record the focal
length information into the image at a value
between the range from above 70 mm to 80 mm
due to system issues.* However, the actually
focal length will never exceed 70 mm.
* Depending on cameras.
The magnification of this lens is determined by
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the combination of the following three factors:
the focusing ring position, zoom ring position,
and focusing distance. Therefore, the number
of combinations for achieving a certain level
of magnification is countless. The method for
close-up shooting described here involves trying
as much as possible to keep the focus position
within the range indicated by the yellow line on
the distance scale. However, please keep in
mind that this is just one method of many.
To check depth of field, please use the camera's
● ●
depth of field function.
For information on taking hand-held close-ups,
● ●
please refer to page 15.
ENG-10