Nikon's first DSLR with video recording, a landmark DX body for its era.
The Nikon D90 was released in August 2008 as the successor to the D80, introducing video recording to the Nikon DSLR lineup for the first time — and becoming one of the first DSLRs from any manufacturer to offer movie mode. The 720p/24fps video at launch was limited to mono audio and short clips, but the implementation demonstrated that DSLR sensor-based video was viable and preceded the Canon EOS 5D Mark II's 1080p video by months. The 12.3MP DX sensor provides standard APS-C DSLR image quality.
The 12.3MP DX CMOS sensor pairs with the EXPEED processor. The 11-point AF system — with one cross-type centre point — provides standard acquisition for most subjects. Burst shooting runs at 4.5fps. Video records at 720p and 24fps with mono audio only. No weather sealing. Battery life approximately 850 shots using the EN-EL3e, body weight approximately 703g with battery and card, single SD/SDHC card slot.
The D90's historical importance is its video introduction, but its practical used value is as a capable 12.3MP DX DSLR: the Multi-CAM 1000 AF module provides reliable acquisition across the 11-point array for standard photography. The 4.5fps burst covers casual action. For film and vintage lens users, the D90 includes an in-body AF drive motor for screwdrive AF lenses — a capability absent from D40/D60/D3xxx/D5xxx bodies.
On the used market the D90 is very affordable. Condition checks: shutter count via EXIF — rated 100,000 actuations — EN-EL3e battery health, and single SD slot contacts. The EN-EL3e is shared with the D200, D300, and D700, keeping spare availability reasonable. The in-body AF motor enables screwdrive AF-D lenses. Compatible with all Nikon F-mount lenses.