Canon shutter message upon powering off (update) Does NOT appear with native lenses
- EOS R
- 9 Replies
Makes sense. At least on Canon DSLRs, the only way to get a lens to keep the aperture closed is to set a narrow aperture, then press the DoF preview button and simultaneously detach the lens.I wonder if perhaps Canon's official specs for EF lenses dictate that the aperture should stay open when the camera is powered down. But, since the Sony adapters are obviously not official Canon devices, they may bend the rules a bit and close the aperture anyway. It might be a case of the lens being physically capable of doing it, but Canon's own rules and specifications for EF lenses don't allow for it.
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