Nikon introduces its new flagship D4 Digital SLR camera (DSLR) with a multitude of new features and functions, replacing the D3, D3X and D3s To deliver supreme image quality, the D4 is equipped with a 16.2 Megapixel FX-Format Full Frame CMOS image sensor and the new Nikon EXPEED 3 image processing engine. It offers a broad ISO range from 100 to 204,800 for enhanced low-light performance, and the new 91,000-pixel RGB 3D Color Matrix metering system that meticulously analyzes each scene and recognizes factors such as color and brightness with unprecedented precision.

Canon announced its new EOS 7D Studio Version (7DSV) DSLR camera, ideal for professional school and event photographers which features four levels of “locking” camera controls for studio environments.

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Sigma’s SD15 digital SLR camera is now available in the US. As the successor to the SD14, the new SD15 sports a 14 Megapixel Foveon X3 direct image sensor, …

Canon China introduces the EOS 550D Jackie Chan Eye of Dragon special edition. The camera body comes with gold Dragon logo of Jackie Chan, who is Canon’s spokesperson in China. The Jackie Chan kit includes a Canon EF-S 180145MM lens, a camera case, a strap and an album book, all with Jackie’s logo (except the lens).

Pentax introduces its first medium-format digital SLR camera, the Pentax 645D. The camera sports a large 40 Megapixel CCD image sensor that measures 44mmx33mm, which is about 1.7 times larger than 35mm sensors. The 645D is equipped with the PRIME (PENTAX Real Image Engine) II image engine with high-speed data-processing capacity and new algorithm exclusively programmed for medium-format DSLR.

Sigma announced the new SD15 digital SLR camera that is the successor to the SD14. The new SD15 is equipped with a 14 Megapixel Foveon X3 direct image sensor and TRUE II image processing engine. It has a 3-inch LCD screen.

Canon introduces the EOS 550D (aka EOS Kiss X4 in Japan and EOS Rebel T2i in the US) Digital DSLR camera as the follow-up to the EOS 500D. As Canon’s latest entry-level DSLR, the 550D sports a 18 Megapixel APS-C CMOS image sensor, DIGIC 4 image processor and ISO 100-6400 (expandable to 12,800).

Olympus adds the PEN E-PL1 to its Micro Four Thirds lineup. As the company’s third Digital PEN camera, the PEN E-PL1 is basically a Lite version or budget version of the original E-P1, sporting a 12.3 Megpaixel Live MOS Image sensor, which is also used on E-30 and E-620 DSLRs.

Sony introduces a new member of its Alpha DLSR line, the entry-level Alpha a450 that sit in between the a500 and a350. The camera is equipped with Sony’s 14.2 Megapixel Exmor CMOS image sensor and BIONZ image processing engine. It also offers Auto HDR in-camera high dynamic range imaging.

Canon announced its new EOS-1D Mark IV digital SLR camera, which is the successor to the EOS-1D Mark III. The 1D Mark IV features a 16 Megapixel Canon CMOS image sensor and is boosted by Dual DIGIC 4 Imaging processor.