Pentax Optio E40 — AA-battery budget digital compact from Pentax's entry-level E-series, 2008.
The Pentax Optio E40 is a budget digital compact from Pentax's E-series, launched in 2008 to offer an affordable entry point into digital photography. It was aimed at first-time buyers and casual family use rather than enthusiasts.
The E40 is built around an 8-megapixel CCD sensor paired with a 3x optical zoom lens and a 2.4-inch LCD screen. It runs on two AA batteries instead of a proprietary lithium pack, and stores photographs on SD/SDHC memory cards, with fully automatic exposure control throughout.
The plastic body and simplified control layout reflect the E-series' focus on low cost rather than handling refinement, with no manual exposure or focus options offered. The AA battery format made the camera easy to power anywhere in the world, a practical benefit for travel use.
Used Optio E40 units are cheap and widely available on the secondhand market. Buyers should check the AA battery compartment for corrosion, confirm the zoom lens moves smoothly on power-up, and test the LCD and flash before relying on the camera day to day.