Without setting an examination site, it is possible to easily position an end face of a narrow-diameter end portion at a suitable position with respect to an examination target, allowing an image of the examination site to be acquired quickly and easily. In general, in one implementation, the techniques include presenting a visual representation of an image object having a clipped portion hidden from view in the visual representation, and during an edit operation, revealing the clipped portion of the image object as a transparent image overlay in the visual representation. The systems, methods, and mediums may further include generating, by the computing device, at least one adjusted control setting by adjusting at least one control setting in response to generation of the adjusted histogram and capturing the image in a memory device in response to generating the at least one adjusted control setting.