EOS 5DS, EOS 5DS R Basic Instruction Manual

a: Manual Exposure
116
If the ISO speed is set to A (AUTO), you can set exposure
compensation (p.118) as follows:
•[z2: Expo.comp./AEB]
Under [83: Custom Controls], use [s: Expo comp (hold btn,
turn )].
Quick Control (p.53)
Exposure Compensation with Auto ISO