Lenses that support changes in the AF speed Extender 1.4x EF-S 10-18mm f/4.5-5.6 IS STM EF- S 15 -85mm f/3.5-5.6L IS USM EF-S 18-55mm f/3.5-5.6 IS STM EF-S 18-135mm f/3.5-5.6 IS STM EF-S 55-250mm f/4-5.6
Zoom Lens Part used on the lens Setting for automatic adjustment CN7x17 KAS S /E1, CN20x50 IAS H/E1 Zoom operation change-over knob SERVO CN-E18-80mm T4.4 L IS KAS S, CN-E70-200mm T4.4 L IS KAS S Zoom change-over switch SERVO
Aperture Lens Part used on the lens Setting for automatic adjustment CN7x17 KAS S /E1, CN7x17 KAS S /P1, CN20x50 IAS H/E1, CN20x50 IAS H/P1, compatible broadcast lenses Iris operation change-over switch A CN-E18-80mm T4.4 L IS KAS S,