Operation | Useful Situations | |
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Manual focusing is possible. | This option disables the manual focusing | |
• This function works only with lenses equipped | capability of the electronic ring provided | |
with an electronic manual focusing ring. | on many USM lenses, eliminating the | |
| possibility of accidentally turning the ring | |
| and shifting the focus after autofocusing is | |
Manual focusing is prohibited. | complete. |
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• Manual focusing by setting the Lens’ Focus | Compatible Lenses: |
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Mode switch to “ M” is possible. | EF50/1.0L USM | EF 85/1.2L USM |
| EF 200/1.8L USM | EF 300/2.8L USM |
| EF 400/2.8L USM | EF 500/4.5L USM |
| EF 600/4L USM | EF 1200/5.6L USM |
| EF |
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