Description
NIKON D3000
Technical Specifications Image sensor: DX format 23.6 × 15.8 mm CMOS; effective pixel count 10.2 million; native ISO range 100 to 1600, expandable to ISO 3200; shutter speed range 1/4000 second to 30 seconds plus bulb mode; Nikon F bayonet lens mount compatible with AF-S and AF-I lenses; 3-inch 230k dot rear LCD monitor; SD and SDHC memory card storage; power supply by EN-EL9 lithium-ion rechargeable battery; continuous shooting speed up to 3 frames per second; built-in pop-up flash and hot shoe for external flash.
Functional Features Optical pentamirror viewfinder provides real-time scene preview; automatic scene modes simplify operation for technical documentation; image capture supports NEF RAW and JPEG formats; built-in image review and histogram display; automatic focus detection with 11-point AF array; USB 2.0 interface transfers captured image files to host computer.
Application Scenarios Industrial equipment spare part documentation, factory site inspection photography, machine component record archiving, maintenance technical report illustration, laboratory test sample recording.
Material Composition Camera chassis combines polycarbonate plastic and internal metal reinforcement frame; lens mount is metal alloy; rear LCD cover uses scratch-resistant hard transparent plastic; shutter assembly contains precision metal blades; battery compartment uses reinforced engineering plastic; external grip surface uses anti-slip rubber coating.
Structural Characteristics Traditional DSLR layout with hand grip on left side; top panel houses mode dial, shutter release button and power switch; rear panel arranges LCD screen, navigation keys and playback controls; internal pentamirror optical path reflects light from lens to viewfinder; removable lens bayonet mount enables interchangeable optics.
Working Principle Light passes through mounted lens and reflects off pentamirror to optical viewfinder during framing. When shutter triggers, mirror flips upward, shutter curtain opens and exposes CMOS sensor to light. Sensor converts optical signal into digital pixel data. Onboard image processor performs colour correction, white balance adjustment and compresses image data before saving to memory card.
Installation Requirements Insert fully charged EN-EL9 battery into battery compartment; insert formatted SD memory card; attach compatible Nikon F mount lens and lock bayonet; set date and time in camera menu before formal shooting; connect USB cable to computer only after camera power stabilises.
Operation Notes Keep sensor away from dust when lens is removed; use lens cap to protect optical surfaces when idle; avoid operating camera in high-temperature, high-humidity or heavy oil mist environment; charge battery before long-term storage and remove battery if camera will not be used for weeks.
