Instruction manual

6
Showing extraordinary versatility, the EOS-1D
X has an ISO sensitivity range that covers
ten stops, from ISO 100 to ISO 51,200.
Expansion settings take this further, up to
ISO 102,400 and ISO 204,800 – ideal for
specialist applications in surveillance or
documentary photography. The ISO range
is also expandable down to ISO 50 for those
bright days or when you want to slow your
shutter speed down.
High-ISO shooting gives you the versatility
to choose the exposure settings you need
regardless of the lighting conditions. For
example, retain depth of field control with
a wider range of apertures, or avoid motion
blur with high shutter speeds. The EOS-1D X
lets you maintain your creative freedom in a
wider range of conditions than ever before.
Such advances in sensitivity are the result
of improving the engineering processes
used in the manufacture of the EOS-1D X’s
18-megapixel CMOS sensor. Gapless micro
lenses cover each photosite, focusing light
from all angles and capturing more light
than ever before. The efficiency with which
this light is turned into an electronic signal
(the photoelectric conversion rate) is
also improved over previous generations
of cameras.
Such enhancements to the natural sensitivity
of the sensor mean that high ISO values can
be achieved with less reliance on signal
amplification, preserving image quality and
reducing noise.
Any noise generated at high ISO settings, or
produced during long exposures, is tackled
during image processing by the camera’s
Dual “DIGIC 5+” microprocessors.
Auto ISO control
Automatic ISO control enables the EOS-1D X
to use ISO sensitivity to control exposure
automatically, just as with aperture and
shutter speed. Minimum and maximum ISO
values can be set, governing the range over
which ISO sensitivity is allowed to fluctuate.
Seeing in the dark
Gapless micro lens
Microlenses
CMOS Sensor
Photo Diode