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ISO speed settings
Taking advantage of ISO 50 (L)
Using lower shutter speeds, aim for creativity
by making use of low ISO speeds
Using C.Fn I-3 Set ISO speed
range, with the minimum
value registered to L, it is
possible to set ISO50 (L).
At ISO50 the shutter speed is
set 1 stop down and panned
With the EOS-1D Mark IV, in addition to
ISO100 – 12800 normal ISO speeds, it is
possible to use 3 stops for the higher ISO
speeds (ISO25600 – 102400), and 1 stop for
the lower ISO speeds (ISO50) as ISO expansion.
To use low ISO speed ISO50, it is necessary to
register the minimum low ISO speed setting L
with Custom Function C.Fn I-3, the same as
with the high ISO speed options.
With the lower ISO speed ISO50, compared to
ISO100, it is possible to set a 1 stop slower
shutter speed, or a 1 stop brighter aperture
value. Due to this, when you want to pan with
a slow shutter speed in comparatively bright
conditions, or shoot with a blurred background
in the same bright conditions with the lens
towards maximum aperture, setting to ISO50
can be effective.
When set to ISO50, compared to ISO100, note
that highlight areas can be more easily blown out.
