If you are looking for durability in a camera, the Nikon D3x should be included in your list. It has a magnesium alloy cover which protects your camera from invasive dust, moisture, and electromagnetic interference. It also comes with a self-diagnosing shutter mechanism designed to last for more than 300,000 cycles.
The Nikon D3x packs the power of 24.5 megapixel resolution which delivers stunning image quality designed for the demands of your business. Its 3 inch LCD screen ensures color accuracy. It come with the Nikon Expeed image processing technology for that rich image quality and reduced noise despite the high ISO setting.
Speaking of ISO, the D3x can be configured up to a maximum of 1600. It gives your camera the added flexibility with additional Lo-1 (up to 50 ISO) and Hi-2 (up to 6400 ISO) so you can configure your camera to the lighting condition. It offers 4 pre-configured picture control settings as well as 9 customizable settings.
Set the Nikon D3x to continuous shooting mode and you can capture up to 5 frames per second so you would not miss every moment. With a couple of Live Shooting modes, you can look forward to an additional 27x magnification when using the tripod. The D3x also has a 100% viewfinder coverage.
The Nikon D3x is long lasting with battery life of up to 4,400 shots. It has a dual card slot that gives you the option to overflow, backup, or copy pictures. It also comes with a wide range of accessories that you can use to maximize the capabilities of the camera.
Megapixels: 24.5 megapixels
Zoom: Interchangeable Lens
Screen Size: 3.0 inches
Shooting Modes: 2
Color Modes: 8
Scene Modes: N/A
Face Detection: Autofocus System
Image Stabilization: CCD Sensor Type
Review Modes: 9
Unique Features: Virtual Horizon Graphics Indicator, Live View Shooting Modes, Color  Matrix Metering, 100% viewfinder coverage, Expandable ISO
Max ISO: 1600
Self-Timer Settings: 2/5/10/20 seconds
Battery: EN-EL4 Lithium Ion Battery
Battery Life: up to 4,400 shots