How should you hold a DSLR for the most stability?

Yes, it matters—mainly because good hand position improves stability, control, and your chances of getting a sharp shot.

A solid general technique is:

• stand upright with feet slightly apart
• keep your back straight
• hold the grip with your right hand, with finger on the shutter
• support the lens from underneath with your left hand
• press the camera lightly to your face/viewfinder
• keep both elbows tucked into your body

This reduces shake and gives better control of the camera.

There isn’t one single “best” hold for every situation, though. For slower shutter speeds, brace yourself more, hold steady, and avoid jabbing the shutter. Some photographers also use their shoulder or body as extra support. For fast-moving or street shooting, a looser, quicker stance may be more practical than the most rigidly stable one.

At the extreme, if maximum steadiness is the goal, a tripod is better than any hand-held technique.

So: yes, technique matters, but the best way is the one that gives you the stability and responsiveness needed for the shot you’re trying to make.