The D300 and D200 are professional-level digital SLR cameras from Nikon. The D200 was introduced in November 2005. The D300 was introduced in August 2007 as the successor to the D200. Both cameras share common traits since they come from the same family, but key differences set them apart.
Image Processor
The image processor is what sets these two cameras apart. The D200 features a 10.2-megapixel CCD optical sensor to take images at a maximum resolution of 3,872 x 2,592. The D300 features a 12.3-megapixel CMOST optical sensor and can take images at a maximum resolution of 4,288 x 2,848. They both have the same 30 second to 1/8000 second shutter speeds, but the D300 has a much wider ISO range. The D300 can shoot ISO 200 through 3200, while the D200 can only shoot ISO 100 through 1600.
LCD Display
These cameras also feature a slightly different LCD display. The D200 has a 2.5-inch LCD display with a 230,000-pixel resolution. The D300 has a 3-inch LCD display with a 920,000-pixel resolution for a better representation of the images you are shooting. The D300 also supports Live View, which allows you to use the LCD screen to shoot photographs. For the D200, you have to use the viewfinder to shoot images. The LCD screen can only playback images.
Dimensions
Both cameras feature almost identical bodies. The D200 measures 5.8 inches wide, 4.4 inches high and 2.9 inches deep, and weighs 29.3 ounces. The D300 measures 5.8 inches wide, 4.5 inches high and 2.9 inches deep, and weighs slightly less at 29.1-ounces.
Price
Since the D300 is the newer model, it retails for more than the D200. The D200 has a manufacturer's suggested retail price of $1,399 while the D300 has an MSRP of $1,799. Prices will vary from retailer to retailer.
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