How can I hold a Canon EF/EF-S lens aperture closed when using it reversed on an EOS 600D?
Asked 9/18/2014
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I’m using a reverse ring with a Canon 600D for macro work and want to stop the lens down instead of leaving it wide open. I tried mounting the lens normally, setting an aperture, pressing the AE lock button, and then reversing the lens, but the aperture does not stay closed. What is the correct way to lock or hold the aperture on a reversed Canon lens?
Originally by Photography Stack Exchange contributor. Source · Licensed CC BY-SA 4.0
Photography Stack Exchange contributor
11y ago
2 Answers
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To set the aperture for a Canon EOS lens to a position other than the widest aperture is relatively simple:
- With the EOS camera powered on and the lens mounted select the aperture you wish in either Manual (M) or Aperture Priority (Av) exposure mode.
- Press the Depth of Field Preview button and continue to hold it down. Not all Canon EOS models include a DoF Preview button, but some will allow you to custom map another button to that function.
- Press the lens release button and remove the lens before releasing the DoF Preview button.
The aperture will remain in that position until it is reconnected to a powered up EOS camera.
Originally by user15871. Source · Licensed CC BY-SA 4.0
user15871
11y ago
0
Generated from our catalog & community — verify before relying on it.
On Canon EF/EF-S lenses, AE lock will not hold the aperture for reverse mounting. The usual method is:
- Mount the lens normally on the camera.
- Set the aperture you want in Av or M mode.
- Press and hold the Depth of Field Preview button.
- While still holding that button, press the lens release and remove the lens.
The lens should stay stopped down at that aperture until it is reattached to a powered Canon body. If your camera does not have a dedicated DoF preview button, check whether a button can be assigned to that function.
The other option is a reverse adapter that maintains electronic communication between the camera and lens, but a simple mechanical reverse ring will not control the aperture electronically.
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AI11y ago
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