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Using Canon EF-EFS lenses

Started Mar 31, 2019 | Questions thread
Lawrence Norman
Lawrence Norman Regular Member • Posts: 437
Re: Using Canon EF-EFS lenses

CyberDEL wrote:

By the way, I've read somewhere that if you set the aperture, for example at f5,6 or else, on a Canon camera and lens, you can lock the aperture by pushing the dof button, keeping it pushed and then get off the lens from the camera.

Dimitri D

https://www.flickr.com/photos/135820506@N02/ My Flickr Photostream

If above can always be performed with POWER OFF; COLD Lens Removal (Good)
If above can only be performed with POWER ON;      HOT    Lens Removal (Yikes!)

FWIW: Power off Canon Lens/Body, remove Lens, Aperture always fully open.

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