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Michael Hannigan
Michael Hannigan, Camera and Video Technician
Category: Camera and Video
Satisfied Customers: 11824
Experience:  25+ Years Experience in Computers and Electronics
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I've been using a Canon Rebel Xsi 450D to photo items for

Customer Question

I've been using a Canon Rebel Xsi 450D to photo items for listing on eBay. I use full auto and have had good results until now. I don't know much about cameras but think I may have messed up a setting because now the focus tries to work but the shutter won't press down completely to let me take a picture. Can you help?
JA: What's the exact make and model of the camera? And can you guesstimate how old it is?
Customer: Canon DS126181. It indicates No.(###) ###-#### Rebel Xsi EOS. Does any of that help?
JA: What happened right before this popped up? What troubleshooting have you tried?
Customer: It was working fine; I laid it down to take a break and when I came back it had this problem. I've tried going through the menu and the instruction book but I'm not having any luck. The Display is showing me 1.5 in the upper left corner, F 5.6 in the upper right corner. Going down from there, left to right, I have iso Auto, Full Auto, AWB, Single Shot, a symbol that looks like a ceiling fan, a symbol that looks like a target in brackets, AI Focus, battery symbol (fully charged), a quarter circle symbol with L, and 2758 in brackets.
JA: Anything else you want the camera expert to know before I connect you?
Customer: Yes - that I don't know diddly squat about photography!
Submitted: 9 months ago.
Category: Camera and Video
Expert:  Michael Hannigan replied 9 months ago.

Hello. My name is Michael. I can help you with your question.

Expert:  Michael Hannigan replied 9 months ago.

This is usually caused by the type of focus you are using. 'AI Servo' is for moving subjects, and 'AI Focus' is for stationary subjects that might move. So AI focus will require that the object be still. But AI Servo focus should not prevent you from firing the shutter. I would try that setting first and let me know if it fixes the issue.