Pentax adds a locking mechanism to the mode dial, but it seems a somewhat convoluted solution. There's a lock switch you engage first, then you override it by pushing down on the center button while turning the dial. In contrast, most manufacturers simply lock the dial and you press to change it, or there's Olympus' solution on the OM-D E-M1, where you press the button to lock it and release it to change settings. The K-3 also gets a welcome three user-settings slots on the mode dial, compared with the single-slot on the K-5 II, although the K-5 II let you configure up to five different settings groups.