1. A method of initiating an image capture of a target image with an image capturing device without initiating the image capture by physically contacting the image capturing device, the method comprising: activating a first image sensor for capturing the target image; capturing a sequence of images with a second image sensor different from the first image sensor, wherein the first image sensor and the second image sensor are included in the image capturing device and wherein each image in the sequence of images is captured with only a portion of pixels in sectors of the second image sensor; determining if the sequence of images captured with the second image sensor includes a shutter gesture performed by a user; determining a category of the shutter gesture and selecting an exposure time based on the category of the shutter gesture; and capturing the target image at the exposure time with the first image sensor in response to determining the sequence of images captured with the second image sensor includes the shutter gesture from the user.