![Canon EF 200-400mm f/4L IS USM Extender 1.4x ON](https://cdn.dxomark.com/dakdata/measures/Optics/Canon_EF_200_400mm_F4L_IS_USM_Extender_14x_ON/Marketing_PV/Canon_EF_200_400mm_F4L_IS_USM_Extender_14x_ON.png)
Canon EF 200-400mm f/4L IS USM Extender 1.4x ON
Released May 2013
![Canon EF 200-400mm f/4L IS USM Extender 1.4x ON](https://cdn.dxomark.com/dakdata/measures/Optics/Canon_EF_200_400mm_F4L_IS_USM_Extender_14x_ON/Marketing_PV/Canon_EF_200_400mm_F4L_IS_USM_Extender_14x_ON.png)
Canon EF 200-400mm f/4L IS USM Extender 1.4x ON
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