https://community.usa.canon.com/t5/EOS-DSLR-Mirrorless-Cameras/Shutter-locks-when-using-the-camera-in-AV-mode/m-p/42483#M71539 <P>EOS Rebel T3i - Shutter locks when using the camera in AV mode. &nbsp;It actually freezes up when in this mode...no it's not just allowing more light in through the shutter but rather locking in the open position. &nbsp;How can I resolve this? Thank you.</P> Thu, 03 Oct 2013 09:51:26 GMT melissa 2013-10-03T09:51:26Z https://community.usa.canon.com/t5/EOS-DSLR-Mirrorless-Cameras/Shutter-locks-when-using-the-camera-in-AV-mode/m-p/42483#M71539 <P>EOS Rebel T3i - Shutter locks when using the camera in AV mode. &nbsp;It actually freezes up when in this mode...no it's not just allowing more light in through the shutter but rather locking in the open position. &nbsp;How can I resolve this? Thank you.</P> Thu, 03 Oct 2013 09:51:26 GMT https://community.usa.canon.com/t5/EOS-DSLR-Mirrorless-Cameras/Shutter-locks-when-using-the-camera-in-AV-mode/m-p/42483#M71539 melissa 2013-10-03T09:51:26Z https://community.usa.canon.com/t5/EOS-DSLR-Mirrorless-Cameras/Shutter-locks-when-using-the-camera-in-AV-mode/m-p/42487#M71540 Does it do this in bright sunlight at the lowest f/number?<BR /><BR />How do you know the shutter is locked open?<BR /><BR />Does it do this on multiple lenses?<BR /><BR />How long does the phenomenon last, and how do you stop it?<BR /><BR />Do you end up with an image? Is it totally overexposed and motion blurred?<BR /><BR />Positive it is not mirror lockup? Thu, 03 Oct 2013 10:13:16 GMT https://community.usa.canon.com/t5/EOS-DSLR-Mirrorless-Cameras/Shutter-locks-when-using-the-camera-in-AV-mode/m-p/42487#M71540 ScottyP 2013-10-03T10:13:16Z