Canon EOS 10D EOS DIGITAL Software Instruction Manual (EOS Viewer Utility 1.2. - Page 191

Personal Function Settings Shortened release time lag O Normally, the shutter-release time lag is controlled for stability. This Personal Function eliminates this control. As a result, the shutter-release time lag can be reduced by as much as about 20 percent when the aperture needs to be stopped down by no more than 3 stops. O This is effective when a shorter shutter-release time lag is more important than a stable shutter-release time lag. O This function is compatible with the EOS-1Ds Mark II and EOS-1D Mark II only. Since the difference is in 10-millisecond increments, the time lag may not feel any M shorter. Enables the electronic dial's function to be used in the reverse direction O The electronic dial's rotational function can be reversed for selecting the AF point and setting the shutter speed and aperture. 4 O By matching the dial's rotation direction to the particular operation, the operation can feel more intuitive. When the main dial's rotational function is reversed, the horizontal AF point selection direction does not change. Prevents exposure compensation with the Quick Control Dial O The Quick Control Dial cannot be used to set exposure compensation. O This prevents exposure compensation from being set accidentally while the AF point is being selected. Specifying Camera Settings in the EOS Viewer Utility M-73