The Camedia D-390 belongs to Olympus's early-2000s D-series, the North American branding used for a run of budget fixed-lens compacts that were sold as C-series models elsewhere, such as the D-370 (C-100), D-380 (C-120) and D-395 (C-160). The D-390 sat within that same generation of low-cost digital point-and-shoots.
Cameras in this D-series generation typically paired a small CCD sensor with a simple fixed lens, an optical viewfinder, a compact monitor screen, and SmartMedia card storage, all powered by AA batteries. Exact resolution and lens specification for this particular model number are not confirmed from available sources and are left out rather than assumed.
Its role was entry-level convenience: a camera built to get casual users shooting digitally at minimal cost, rather than to compete with the more capable Camedia C-x0xx and E-series models sold at the same time.
Values are low on the used market, and SmartMedia cards themselves are now obsolete, so buyers should confirm a working card and reader are included, test the battery door and card slot for cracked plastic, and check the camera powers up before purchase.