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Menu Guide 71
Sensitivity is a measure of how quickly the camera reacts to light. The higher the
sensitivity, the less light needed to make an exposure. Much as film with a high
ISO rating tends to produce “grainy” images, high sensitivities may however be
associated with “noise”—randomly-spaced, brightly-colored pixels concen-
trated in dark parts of the image. Choose from values between ISO 64 and ISO
3,200. Auto is equivalent to ISO 64 under normal conditions; when lighting is
poor and the flash is off, the camera compensates by raising ISO sensitivity to a
maximum of ISO 800 (note that ISO sensitivity is fixed at 64 in mode M).
The current ISO sensitivity is displayed in the monitor at settings other than
Auto (B 4). If Auto is selected, an ISO icon will be displayed when sensitivity is
raised above ISO 64.
n ISO Sensitivity
A ISO 3200
Image sizes over 2,592×1,944 (f) are not available at ISO 3200 (B 66). If 3,648×2,736 (j),
3,648×2,432 (h), or 3,584×2,016 (9) is selected for Image size when ISO sensitivity is set
to 3200, Image size will automatically be set to 2,592×1,944 (f). The original image size
will be restored when a lower ISO sensitivity is selected.
When 3200 is selected for ISO sensitivity, image size is displayed in red and the slowest
shutter speed available is 2s.