Pre-PMA 2008: Pentax has unveiled its latest mid-priced DSLR - the K20D. The camera is based around the successful K10D body with the addition of a 14.6 megapixel CMOS sensor and sees the addition of live view for the first time on a Pentax DSLR. It also features this season's de rigueur feature: an expanded dynamic range function.

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