When we say we're going to shoot someone we normally mean a nice portrait rather than with a bullet - but that doesn't mean we can't learn a thing or two from the military.
A US Army officer has produced a guide to shooting your DSLR like a rifle and gain impressive low-light images in the process.
Alex Jansen says many of his tips come from his extensive marksmanship training and that the military approach can lead to better images.
Writing on Pentaxforums, Jansen wrote: "I am by no measures a "pro," but I understand my fundamentals very well, and this specific set has been drilled into my head so many times that it is now second-nature.
"I am going to teach you how to "shoot" your camera like a high end rifle because at the end of the day, the fundamentals stay the same in every aspect."