Canon EOS-1D C EOS 1D X Instruction Manual - Page 228

k Shooting Movies ISO speed in the d, s, f, and BULB modes The ISO speed will be set automatically within ISO 100 - 25600. Under [z2: ISO speed settings], if [ISO speed range]'s [Maximum] setting (p.130) is set to [51200/H] in the d, s, and BULB modes, the automatic ISO speed setting range's maximum will be expanded to H (equivalent to ISO 51200). Note that even if you set [Maximum] to [51200], the maximum will remain at ISO 25600 and will not be expanded. If [z2: Highlight tone priority] is set to [Enable] (p.154), the ISO speed will be ISO 200 - 25600. Under [z2: ISO speed settings], [Auto ISO range] and [Min. shutter spd.] cannot be set (p.131, 132) for movie shooting. Also, [ISO speed range] cannot be set in the s mode. If [ISO speed range]'s [Minimum] is set to [L (50)] and you switch from still photo shooting to movie shooting, the automatic ISO speed setting range's minimum for movie shooting will be ISO 100. It cannot be expanded to ISO 50. Notes for Autoexposure, Shutter-priority AE, and Aperture-priority AE You can lock the exposure (AE lock) by pressing the button (p.181). After applying AE lock during movie shooting, you can cancel it by pressing the button. (AE lock setting is retained until you press .) If you set the power switch to and turn the dial, you can set the exposure compensation. Pressing the shutter button halfway displays the ISO speed and shutter speed at the screen bottom. This is the exposure setting for taking a still photo (p.231). The exposure setting for movie shooting is not displayed. Note that the exposure setting for movie shooting may differ from that for still photo shooting. Using an EX-series Speedlite (Sold Separately) Equipped with an LED Light During movie shooting in the d, s, f or BULB mode, this camera supports the function that turns on the Speedlite's LED light automatically in low-light conditions. For details, refer to the Speedlite's instruction manual. 228