Canon PowerShot G1 X Mark III PowerShot G1X MarkIII Camera User Guide - Page 101

●● After you set the shutter speed and aperture value, the exposure level may change if you adjust the zoom or recompose the shot. ●● Screen brightness may change depending on your specified shutter speed and aperture value. However, screen brightness remains the same when the flash is up and the mode is set to [ ]. ●● Image brightness may be affected by Auto Lighting Optimizer (= 82). ●● [ ]: Manual ●● Calculation of optimum exposure is based on the specified metering method (=79). ●● The following operations are available when ISO speed is set to [AUTO]. -- Adjust exposure by turning the exposure compensation dial. -- Press the [ ] button to lock the ISO speed. Screen brightness changes accordingly. Shooting Long Exposures (Bulb) With bulb exposures, shots are exposed for as long as you hold down the shutter button. 1 Specify bulb exposure. zzSet the shutter speed to [BULB], following steps 1 - 2 in "Specific Shutter Speeds and Aperture Values ([ ] Mode)" (= 100). 2 Shoot. zzShots are exposed for as long as you hold the shutter button all the way down. The elapsed exposure time is displayed during exposure. ●● Mount the camera on a tripod or take other measures to keep it still and prevent camera shake. In this case, also disable image stabilization (=53). ●● To avoid camera shake that may otherwise occur when pressing the shutter button directly, you can shoot remotely (=165) or use an optional remote switch (=186). ●● When [Touch Shutter] is set to [Enable], shooting is started by touching the screen once and stopped by touching it again. Be careful not to move the camera when touching the screen. Before Use Basic Guide Advanced Guide Camera Basics Auto Mode / Hybrid Auto Mode Other Shooting Modes P Mode Tv, Av, M, and C Mode Playback Mode Wireless Features Setting Menu Accessories Appendix Index 101