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3 Setting Custom FunctionsN
Same exposure for new aperture
If the <
a
> mode (manual exposure shooting) is set and the ISO speed is set
manually (other than Auto ISO), the maximum aperture’s f/number may change to a
higher number (smaller aperture) if you do any of the following: 1. Change the lens, 2.
Attach or detach an Extender, or 3. Use a zoom lens whose maximum aperture f/
number changes. If you then shoot at the exposure setting as is, the image will be
underexposed by the amount the maximum aperture f/number changes to a higher
number. However, by changing the ISO speed or shutter speed (Tv) automatically,
you can obtain the same exposure that would be obtained before you did 1, 2, or 3.
OFF: Disable
Automatic changes in settings to maintain the specified exposure
will not be applied. The ISO speed, shutter speed, and aperture
already set will be used for shooting. If you do 1, 2, or 3 and the
maximum aperture f/number increases, adjust the ISO speed and
shutter speed before you shoot.
ISO: ISO speed
If you do 1, 2, or 3, the ISO speed will automatically increase to
compensate for the amount that the maximum aperture f/number
increases by. The same exposure that would be obtained before
you did 1, 2, or 3 is thereby obtained.
Tv: Shutter speed
If you do 1, 2, or 3, a slower shutter speed will automatically be set to compensate
for the amount that the maximum aperture f/number increases by. The same
exposure that would be obtained before you did 1, 2, or 3 is thereby obtained.
This function does not work with macro lenses whose actual aperture
f/number changes when the magnification changes.
This function does not work with movies.
If [Shutter speed] is set and the exposure cannot be maintained within
the range set with [82: Set shutter speed range], the shutter speed
will not change automatically.
If [
ISO speed
] is set and the exposure cannot be maintained within the range
set with [
ISO speed range
], the ISO speed will not change automatically.
If you do 1, 2, or 3 and the camera turns off (power switch is set to
<
2
>, etc.) while the exposure is being maintained, the target exposure
will be updated to the exposure at the moment the camera turns off.