Pentax's entry-level 2004 compact — 3.2MP CCD, 38-114mm equiv zoom, 2cm macro, AA batteries, SD storage.
The Pentax Optio 30 was a simple entry-level digicam from 2004, sitting near the bottom of the Optio compact range. Despite its budget positioning it packed in features unusual for the class, such as a live histogram display, selectable ISO, time-lapse movie recording and continuous shooting modes. It is a different camera from the similarly named Optio S30 and Optio E30.
It combines a 3.2-effective-megapixel CCD with a 3x optical zoom equivalent to 38-114mm at f/2.9-5.0, built from 7 elements in 6 groups with three aspherical elements. A macro mode focuses down to 2cm, digital zoom extends reach to a combined 12x, and images are stored on SD cards. Power comes from two AA batteries, which keeps running costs low.
As a first digital camera of its era it suits beginners, students and anyone curious about early-2000s CCD rendering on a small budget. The bright-ish wide end and close macro make it more flexible than most entry compacts, though the small sensor limits low-light work and the feature set is menu-driven rather than dial-driven.
Second-hand, the AA-battery design is a real advantage since fresh NiMH cells drop straight in with no proprietary charger hunt. SD storage is equally painless. Check the lens barrel extends without error messages, the LCD is free of bleed, and the battery contacts show no corrosion from cells left inside, a common fate for cheap AA-powered digicams.