Canon EOS C300 Mark III, Manual

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75
Aperture
Momentary Automatic Aperture - Push Auto Iris
During manual aperture, you can press the PUSH AUTO IRIS button to have the camera temporarily take control
and adjust the aperture automatically for an optimal exposure.
This function is not available when slow & fast motion recording is activated.
1 Select > [
v
Camera Setup] > [Iris Mode] > [Manual].
• When using a compatible EF Cinema/broadcast lens, enable
automatic adjustment on the lens (
A
73).
2 Press and hold the PUSH AUTO IRIS button.
• The camera will automatically adjust the aperture to obtain
optimal exposure. As long as you hold the button pressed
down,
E
will appear on the screen next to the aperture value.
• When you release the button, automatic aperture mode will end
and the
E
icon will disappear. The selected aperture value will
appear at the bottom of the screen.
NOTES NOTES
• You can use the > [
v
Camera Setup] > [AE Response] setting to change how quickly the aperture
changes during automatic aperture mode. This setting has no effect when using a CN7x17 KAS S/E1,
CN7x17 KAS S/P1, CN10x25 IAS S/E1, CN10x25 IAS S/P1, CN20x50 IAS H/E1, CN20x50 IAS H/P1 or
broadcast lens.
Automatic Aperture
When a compatible lens is attached to the camera, you can have the camera automatically adjust the aperture.
This function is not available when slow & fast motion recording is activated.
Select > [ v Camera Setup] > [Iris Mode] > [Automatic].
• When using a compatible EF Cinema/broadcast lens, enable automatic adjustment on the lens (
A
73).
• The camera will automatically adjust the aperture to obtain optimal exposure. The selected aperture value will
appear at the bottom of the screen with an
E
icon next to it.
NOTES NOTES
• If you set an assignable button to [Iris Mode] (
A
123), you can press the button to toggle between the
[Automatic] and [Manual] settings when a compatible lens (
A
237) is attached to the camera.
• When > [
Æ
Recording/Media Setup] > [Sensor Mode] is set to [Super 35mm] and a
broadcast lens is attached to the camera, the camera will not achieve optimal exposure.
• When > [
Æ
Recording/Media Setup] > [Sensor Mode] is set to [Full Frame] and an EF-S
lens or Super 35mm lens is attached to the camera, the camera will not achieve optimal exposure. Similarly,
when > [
Æ
Recording/Media Setup] > [Sensor Mode] is set to [Full Frame] or [Super 35mm
(Cropped)] and a broadcast lens is attached to the camera, the camera will not achieve optimal exposure
either.
• The aperture value may change in the following cases.
- While using the built-in extender or iris compensation function of an EF Cinema lens, when you switch from
automatic aperture to manual aperture.
- When the aperture controls on the lens are switched between automatic/manual mode.
• When using EF Cinema lenses/broadcast lenses that let you adjust the aperture gain, if the aperture gain is set
too high, the aperture adjustment may not be stable (“aperture hunting”), depending on the shooting
conditions. In such case, reset the lens's aperture gain to its initial value.