The Nikon D100 is a discontinued 6-megapixel digital single-lens reflex camera made by Nikon Corporation and designed for professionals and advanced enthusiasts. It was introduced on February 21, 2002 at the Photo Marketing Association Annual Convention and Trade Show as a direct competitor to the Canon EOS D60. With a price of US$1,999 for the body only in the United States, it was the second 6-megapixel DSLR to break the $2000 barrier, after the EOS D60.
Although the name D100 suggested that it was a digital version of the Nikon F100, the camera design more closely resembles the Nikon F80 (also known as Nikon N80 in the United States), which is a much more consumer-oriented camera than the professional F100. The price of the camera dropped over time to $1699 in May 2003, and $1499 in December 2003. In the Spring of 2004 Nikon released the D70, which offered similar features to the D100 at a lower price of $999. However, Nikon continued to produce the D100 until 2005 when a more advanced and professional-oriented successor, the Nikon D200, was released.
6.0 effective megapixels rendering 3,008 x 2,000-pixel images
CCD sensor with ISO 200-6400
Raw (Nikon NEF — compressed or uncompressed), JPEG (specifically JFIF), or TIFF
3D Matrix Metering — 10 sensor matrix meter
Custom / Preset, Fixed or Auto White Balance options
Built-in Speedlight with D-TTL flash control — 18 GN [at ISO 200]
Three color modes (sRGB I, Adobe RGB, and sRGB III, (wider gamut of greens and blues)
Five-Area Autofocus with CAM-900 chip
Top shutter speed of 1/4,000s and flash sync speed up to 1/180s.
Has a self-timer, allowing times of 2, 5, 10 and 20s
USB 1.1 interface
Compatible with CompactFlash cards Type I and Type II, including IBM (and Hitachi's) MicroDrive hard drives up to 4 GB. Firmware v2.0 is required for body to recognize cards/drives larger than 2 GB, and cards/drives must be initially formatted as FAT32 in a computer. (Early v1.x firmware supported FAT16 only, so without the firmware upgrade the D100 will only be able to use or "see" 2 GB of available memory on larger cards.)
Optional Multi Function Battery Pack MB-D100 accepts six 1.5 V LR6 (AA-size alkaline) batteries or one or two Li-Ion EN-EL3 batteries for extended shooting capability. Features voice memo recording/playback function, vertical shutter release button, Command and Sub Command Dials, AF start button and a 10-pin remote terminal.