Pentax Optio A40 Review: The Pentax Optio A40 12.0 megapixel digital camera is a compact point-and-shoot camera. This 12.0 megapixel digital camera price range is between $185.99 to $214.95 on Amazon. On Ebay, Pentax Optio A40 12.0 megapixel digital camera is sold cheaper by many vendors. Prices on Ebay for Pentax Optio A40 range between [...] … More Info