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EOS M Support
FAQ and troubleshooting

With some EF lenses, it takes long to achieve focus in AF. Or correct focus may not be achieved (EOS M)

Content Id: 8201705900


Solution

With the EF lenses listed below, it may take longer to achieve focus, or correct focus may not be achieved.

Product nameRemarks
EF50mm f/1.4 USM
EF50mm f/1.8 II
EF50mm f/2.5 Compact Macro
EF75-300mm f/4-5.6 III
EF75-300mm f/4-5.6 III USM
EF100mm f/2.8 Macro USM
EF15mm f/2.8 FisheyeProduction ended
EF-S18-55mm f/3.5-5.6Production ended
EF-S18-55mm f/3.5-5.6 IIProduction ended
EF-S18-55mm f/3.5-5.6 USMProduction ended
EF-S18-55mm f/3.5-5.6 II USMProduction ended
EF20-35mm f/2.8LProduction ended
EF22-55mm f/4-5.6 USMProduction ended
EF24mm f/2.8Production ended
EF28mm f/2.8Production ended
EF28-70mm f/3.5-4.5Production ended
EF28-70mm f/3.5-4.5 IIProduction ended
EF28-80mm f/3.5-5.6Production ended
EF28-80mm f/3.5-5.6IIProduction ended
EF28-80mm f/3.5-5.6 II USMProduction ended
EF28-80mm f/3.5-5.6 III USMProduction ended
EF28-80mm f/3.5-5.6 IV USMProduction ended
EF28-80mm f/3.5-5.6 V USMProduction ended
EF28-90mm f/4-5.6Production ended
EF28-90mm f/4-5.6 IIProduction ended
EF28-90mm f/4-5.6 IIIProduction ended
EF28-90mm f/4-5.6 USMProduction ended
EF28-90mm f/4-5.6 II USMProduction ended
EF28-105mm f/4-5.6Production ended
EF28-105mm f/4-5.6 USMProduction ended
EF28-200mm f/3.5-5.6Production ended
EF28-200mm f/3.5-5.6 USMProduction ended
EF35mm f/2Production ended
EF35-70mm f/3.5-4.5Production ended
EF35-70mm f/3.5-4.5AProduction ended
EF35-80mm f/4-5.6Production ended
EF35-80mm f/4-5.6 IIProduction ended
EF35-80mm f/4-5.6 IIIProduction ended
EF35-80mm f/4-5.6 USMProduction ended
EF35-80mm f/4-5.6 PZProduction ended
EF35-105mm f/3.5-4.5Production ended
EF35-105mm f/4.5-5.6Production ended
EF35-105mm f/4.5-5.6 USMProduction ended
EF35-135mm f/3.5-4.5Production ended
EF38-76mm f/4.5-5.6Production ended
EF50mm f/1.8Production ended
EF50-200mm f/3.5-4.5Production ended
EF50-200mm f/3.5-4.5LProduction ended
EF55-200mm f/4.5-5.6 USMProduction ended
EF55-200mm f/4.5-5.6 II USMProduction ended
EF70-210mm f/4Production ended
EF75-300mm f/4-5.6Production ended
EF75-300mm f/4-5.6 IIProduction ended
EF75-300mm f/4-5.6 USMProduction ended
EF75-300mm f/4-5.6 II USMProduction ended
EF75-300mm f/4-5.6 IS USMProduction ended
EF80-200mm f/2.8LProduction ended
EF80-200mm f/4.5-5.6Production ended
EF80-200mm f/4.5-5.6 IIProduction ended
EF80-200mm f/4.5-5.6 USMProduction ended
EF90-300mm f/4.5-5.6Production ended
EF90-300mm f/4.5-5.6 USMProduction ended
EF100mm f/2.8 MacroProduction ended
EF100-200mm f/4.5AProduction ended
EF100-300mm f/5.6Production ended
EF100-300mm f/5.6LProduction ended
EF135mm f/2.8 Soft FocusProduction ended
EF400mm f/2.8L USMProduction ended
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