STM lens (such as EF 50mm f/1.8 STM, EF 18-135 IS STM) requires to be powered to drive the motor to focus, so cannot achieve focus with manual adapters. Canon EOS EF Lens. Not applicable to Canon lenses of the "STM" series such as (EF 50mm f/1.8 STM/EF 18-135 IS STM,EF 40/2.8 STM etc.).
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