The Nikon F55, known as the N55 in the United States, is an entry-level 35mm film SLR camera first released in 2002. This lightweight, mostly-plastic autofocus camera offers P/S/A/M exposure modes. It provides full autofocus and metering capabilities with G-type lenses, and is compatible with screw-type AF and AF-D lenses, though AF lenses without D default to non-3D matrix metering. It does not support autofocus with AF-S and AF-I lenses, nor does it meter with most manual-focus lenses, except for AI-P lenses. The F55 features a built-in flash with TTL metering, but external flashes do not offer this function. It lacks a depth of field preview button and manual ISO setting, automatically setting non-DX coded film to ISO 100. A notable feature is its reverse film loading mechanism, where the entire roll is spooled onto the take-up reel upon loading and rewound into the canister as photos are taken, preventing accidental exposure of already-shot frames if the camera back is opened. The camera is powered by two CR2 batteries, with date back variations also using a CR2025 coin battery. Production of the F55 ceased in 2006.