Canon EOS C300 Instruction Manual page 34

Preparing the Camcorder
Changing a Lens While Maintaining the Time Code's Progress
If you set an assignable button to [LENS EXCHANGE] (A 111), you can press
the button to change the lens while the camcorder is turned on and the time
code is running.
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Operating modes:
1 Set an assignable button to [LENS EXCHANGE] (A 111).
2 Press and hold the assignable button for 1 second.
• The camcorder enters lens exchange mode and the tally lamp will flash
twice every 2 seconds. During this time, the time code will continue
running.
• While the camcorder is in lens exchange mode, only the Q switch
and the selected assignable button can be operated. Also, the LCD screen will turn off and output from
the video terminals will be put on hold.
3 Remove the lens attached to the camcorder and attach the new lens.
• Do not set the Q switch to OFF.
4 Press the assignable button again.
• The camcorder exits lens exchange mode.
• Opening a CF card slot cover or removing the SD card will also cause the camcorder to exit lens
exchange mode.
# Peripheral Illumination Correction
Depending on the characteristics of the lens used, the image around the corners of the picture may seem darker
due to light fall-off or peripheral illumination drop. If the camcorder has correction data available for the EF lens
used, it can apply this correction data to compensate as necessary.
Operating modes:
1 Attach the lens you want to use.
2 Open the peripheral illumination correction screen.
[~ Camera Setup] > [Periph. Illum. Corr.]
• If correction data is available, the lens model name will appear on the
screen.
• If correction data is not available, [Periph. Illum. Corr.] will appear
grayed out. Visit your local Canon Web site and check if there is
correction data available for the lens you are using. If so, download the necessary update package and
upgrade the camcorder's firmware following the instructions supplied therein.
3 Select [On] and then press SET.
• As long as [~ Camera Setup] > [Periph. Illum. Corr.] is set to [On], the camcorder will automatically apply
the appropriate correction data.
NOTES
• About lens correction data:
- The camcorder contains a register of correction data for compatible lenses that were available at the time
the camcorder went on sale. Correction data for future lenses will be made available as part of the regular
updates released for the camcorder's firmware. For more details, visit your local Canon Web site.
- Depending on the recording conditions, noise may appear in the periphery of the image as a result of the
correction.
- The level of correction will be lower for lenses that cannot provide distance information.
[~ Camera Setup]
[Periph. Illum. Corr.]
[Off]