I want to capture images at specific instances, for example when a button is pushed; but I don't want to show any video preview screen. I guess captureStillImageAsynchronouslyFromConnection is what I need to use for this scenario. Currently, I can capture image if I show a video preview. However, if I remove the code to show the preview, the app crashes with the following output: 2012-04-07 11:25:
![How to capture image without displaying preview in iOS](https://cdn-ak-scissors.b.st-hatena.com/image/square/98d6f053a97a87156775f60757c60865d0f2c47d/height=288;version=1;width=512/https%3A%2F%2Fcdn.sstatic.net%2FSites%2Fstackoverflow%2FImg%2Fapple-touch-icon%402.png%3Fv%3D73d79a89bded)