Canon unveils PowerShot SX510 HS and SX170 IS superzooms

Canon has announced its PowerShot SX510 and SX170 superzoom digital cameras. The PowerShot SX510 HS now uses a 12.1 megapixel CMOS sensor (versus a 16MP CCD on its predecessor), hence the new 'HS' designation. It offers Wi-Fi connectivity and what's almost certainly the same 24-720mm equivalent optical zoom lens, a 3-inch LCD and Full HD video. The SX170 is essentially the same as its SX160 that came before it, with a 16x optical zoom and 16 megapixel CCD, though it's no longer powered by AA-batteries. The cameras are priced at $250 and $180, respectively.