Pentax's 2003 flagship compact — 5MP CCD, 5x 37.5-187.5mm zoom, full manual control, metal body
The Pentax Optio 555 was the flagship of Pentax's Optio compact line when announced in September 2003. It developed the metal-bodied Optio 550 with a longer maximum exposure time and unlimited movie clip length, and aimed at enthusiasts who wanted real exposure control in a pocketable camera.
It pairs a 5.0-megapixel 1/1.8-inch CCD with a 5x SMC Pentax 7.8-39mm lens, equivalent to 37.5-187.5mm, at f/2.8-4.6. Exposure runs from full auto through program, aperture priority, shutter priority and manual, with shutter speeds of 1/2000 to 15 seconds and ISO 64-400. Framing is via a real-image optical finder with diopter adjustment or a 1.5-inch TFT LCD; storage is SD/MMC and power comes from a D-LI7 rechargeable lithium-ion pack. The all-metal body weighs about 250g loaded.
With PASM control, bracketing, TIFF recording, manual focus and a well-corrected lens, the 555 suits photographers who want a small learning or carry-everywhere camera rather than a pure snapshot machine. Period reviewers praised corner-to-corner sharpness and battery life but criticised slow shutter response, so it rewards deliberate shooting over fast action.
It only takes the proprietary D-LI7 pack, so confirm a working battery and charger are included — there is no AA fallback. As a pre-SDHC design it is best paired with a small-capacity SD card. Check the sliding lens cover opens fully, the telescoping zoom extends without grinding, and the small LCD is free of scratches and bright spots; CCD-era colour is part of its current appeal.