With some EF lenses, the camcorder may take longer to focus automatically or may not be able to focus correctly.
Solution
With the EF lenses listed below, it may take longer to achieve focus, or correct focus may not be achieved.
EF50mm f/1.4 USM
EF50mm f/2.5 Compact Macro
EF15mm f/2.8 Fisheye
EF-S18-55mm f/3.5-5.6
EF-S18-55mm f/3.5-5.6 II
EF-S18-55mm f/3.5-5.6 USM
EF-S18-55mm f/3.5-5.6 II USM
EF20-35mm f/2.8L
EF22-55mm f/4-5.6 USM
EF24mm f/2.8
EF28mm f/2.8
EF28-70mm f/3.5-4.5
EF28-70mm f/3.5-4.5 II
EF28-80mm f/3.5-5.6
EF28-80mm f/3.5-5.6II
EF28-80mm f/3.5-5.6 II USM
EF28-80mm f/3.5-5.6 III USM
EF28-80mm f/3.5-5.6 IV USM
EF28-80mm f/3.5-5.6 V USM
EF28-90mm f/4-5.6
EF28-90mm f/4-5.6 II
EF28-90mm f/4-5.6 III
EF28-90mm f/4-5.6 USM
EF28-90mm f/4-5.6 II USM
EF28-105mm f/4-5.6
EF28-105mm f/4-5.6 USM
EF28-200mm f/3.5-5.6
EF28-200mm f/3.5-5.6 USM
EF35mm f/2
EF35-70mm f/3.5-4.5
EF35-70mm f/3.5-4.5A
EF35-80mm f/4-5.6
EF35-80mm f/4-5.6 II
EF35-80mm f/4-5.6 III
EF35-80mm f/4-5.6 USM
EF35-80mm f/4-5.6 PZ
EF35-105mm f/3.5-4.5
EF35-105mm f/4.5-5.6
EF35-105mm f/4.5-5.6 USM
EF35-135mm f/3.5-4.5
EF38-76mm f/4.5-5.6
EF50mm f/1.8
EF50mm f/1.8 II
EF50-200mm f/3.5-4.5
EF50-200mm f/3.5-4.5L
EF55-200mm f/4.5-5.6 USM
EF55-200mm f/4.5-5.6 II USM
EF70-210mm f/4
EF75-300mm f/4-5.6
EF75-300mm f/4-5.6 II
EF75-300mm f/4-5.6 USM
EF75-300mm f/4-5.6 II USM
EF75-300mm f/4-5.6 IS USM
EF75-300mm f/4-5.6 III
EF75-300mm f/4-5.6 III USM
EF80-200mm f/2.8L
EF80-200mm f/4.5-5.6
EF80-200mm f/4.5-5.6 II
EF80-200mm f/4.5-5.6 USM
EF90-300mm f/4.5-5.6
EF90-300mm f/4.5-5.6 USM
EF100mm f/2.8 Macro
EF100mm f/2.8 Macro USM
EF100-200mm f/4.5A
EF100-300mm f/5.6
EF100-300mm f/5.6L
EF135mm f/2.8 Soft Focus
EF400mm f/2.8L USM