Lenses that support changes in the AF speed IS STM EF- S 35mm f /2.8 Macro IS STM EF 85mm f /1.4L IS USM EF 70-200mm f /4L IS II USM EF 70-200mm f /2.8L IS III USM EF 400mm f /2.8L IS III USM EF 600mm f /2.8 IS III USM
AF Stop Button With the EOS 630/600, RT, A2/A2E/5, or 10 S /10 set to the AI Servo AF mode and continuous shooting, AF will not resume even after you let go of the AF stop button. Press the shutter release button halfway to resume AF.
