Olympus's creative compact of 2005 — 7.1MP CCD, 38-114mm f/2.8-4.9, RAW and full manual control, AA power
The Olympus SP-310 was announced in late August 2005 as the junior of two 'creative compact' SP models, sitting below the SP-350 in Olympus's enthusiast compact range. It offered an unusual mix for the price: point-and-shoot ease alongside full manual control and RAW capture in a compact AA-powered body.
It used a 7.1-megapixel CCD behind a 38-114mm-equivalent 3x zoom with an f/2.8-4.9 maximum aperture. Exposure ran from full auto to aperture, shutter and manual modes with shutter speeds of 15s to 1/2000s and +/-2EV compensation, plus multi-pattern, centre-weighted and spot metering. Framing used a 2.5-inch LCD or optical viewfinder, files saved as RAW or JPEG to xD-Picture Card or 25MB internal memory, and power came from two AA batteries. It weighed about 180g.
RAW capture, spot metering, manual focus and a 143-point selectable AF area made the SP-310 a genuine learning tool, and it still suits students who want to practise exposure control on a cheap CCD compact. The 3x zoom is modest and burst shooting slow, but AA power and a proper optical finder make it an easy camera to keep running.
AA power is a used-market advantage since no proprietary charger is needed, but the discontinued xD-Picture Card format is not: confirm a card is included. Check the lens barrel extends without grinding, the LCD for bright pixels, and the battery-door catch, a common wear point on AA compacts. RAW files need older software or modern converters with legacy Olympus support.