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CMS-XML Using the internal extender on the EF 200-400mm f/4L IS USM Extender 1.4x
Internal Extender Switch When the lens or camera is in operation (during Auto Focus , Image Stabilization*, exposure, continuous shooting, use of the focus preset, power focus operation, etc.). ... Not doing so may result in an error message being displayed (ERR01) and prevent shooting operation. Turn the camera OFF and then ON to clear the error message . ... Not positioning the lever correctly will create shadown in images and cause AF , AE, and other functions to not work properly.
CMS-XML Setting the Focus Mode on the EF 200-400mm f4L IS USM Extender 1.4x lens
Setting the Focus Mode After autofocusing in ONE SHOT AF mode, focus manually by pressing the shutter button halfway and turning the focusing ring. (Full-time manual focus).
CMS-XML Using Focus Preset on the EF 200-400mm f/4L IS USM Extender 1.4x
Focus Preset When turning the playback ring, keep your finger away from the shutter button. In One -Shot AF mode, the exposure will be locked when you press the shutter button halfway and focus is achieved. So if you press the shutter button halfway while turning the playback ring, the exposure may not be correct.
CMS-XML Using Extenders (Sold Separately) with the EF 200-400mm f/4L IS USM Extender 1.4x lens
Extenders If using this lens with a 1.4x extender and then setting the internal extender to 1.4x, the aperture value will be f/8, meaning that the frame for AF shooting will be the central AF frame. Even if the internal setting is returned to 1 x, AF shooting will continue to use the central AF frame. To use an AF frame other than the central AF frame, please select the AF frame manually.
CMS-XML Camera / Extender Compatibility Chart for the EF 200-400mm f/4L IS USM Extender 1.4x
Camera/Extender Compatibility Chart Extender Model 1.4x II 2x II 1 .4x III 2x III 1.4x II 2x II 1.4x III 2x III Actual Aperture f/5.6 f/8 f/5.6 f/8 f/8 f/11 f/8 f/11 Function AF IS AF IS AF IS AF IS AF IS AF IS AF IS AF IS EOS-1D X, EOS 5D Mark III, EOS-1D Mark IV,
CMS-XML AF Stop Buttons
CMS-XML Lenses that support changes in the AF speed on the EOS C500 Mark II
The AF speed (10 steps) and AF response (7 steps) can be changed. Also, AF speed can be selected to be applied constantly or only when recording. The lenses below will allow the AF speed to be altered from within the camera's menu.
CMS-XML Using the AF Stop Button on the EF 200-400mm f/4L IS USM Extender 1.4x
CMS-XML Using the Image Stabilizer on the EF 200-400mm f/4L IS USM Extender 1.4x
Image Stabilizer You can use the image stabilizer in AF , PF, or MF mode. Also, the Image Stabilizer can be used regardless of the internal extender setting (either 1x or 1.4x).