Canon EOS 1D Mark III User Guide - Page 40

IX. CONTROLS AND DISPLAY Ease of Operation In order to provide ease of operation that befits a new-generation EOS-1D series camera, Canon has thoroughly investigated ways to make camera operation easier. The camera retains the EOS Digital line's basic operation method with the Main Dial, Quick Control Dial, Multi-Controller, SET button, and other buttons to select and set various functions. Also, the ISO speed button, AF Start (AF-ON) button, Picture Style button, and Memory selection/Image size/White balance function button have been newly added to make camera operation easier. With the older EOS-1D series cameras, the basic shooting operation logic consisted of holding down a button and turning the Main Dial or Quick Control Dial to select a setting. However, with the EOS-1D Mark III, when you press a button, it remains active for a while so you can let it go and then turn a dial to set something. Also, the three buttons on the top left of the camera accept double pressing. You can therefore set something (except AEB) with just one button. With the EOS 5D and 30D, the Multi-Controller serves as the AF point selector. However, with the EOS-1D Mark III, we concluded that it was best to use the Quick Control Dial or Main Dial to select one of the 19 AF points. The Multi-Controller serves as a supplemental camera control for the digital operation's UI. If you press the AF point selection button and then press the Multi-Controller, the center AF point/automatic AF point selection can be made. Any other AF point (other than center AF point) cannot be selected. AF/Drive mode selection button Info button ISO speed button Function button (WB/Recording media/ Image size selection button) AF start button Multi-controller Setting button AF start button Quick Control Dial switch Picture Style selection button IX. CONTROLS AND DISPLAY 40