Pentax K-7 and K-x firmware upgrades pack SDXC compatibility

Last November Pentax's mid-range front runner, the K-5 DSLR, got an upgrade, now the K-7 and K-x are following suit. New firmware updates for both cameras tout SDXC card compatibility, increasing memory, but failing to follow through on speed -- Pentax notes transfer rates won't hit UHS. Despite the company's Japanese website listing the K-7 as a discontinued product, the camera also gets increased video editing functions in playback mode, as well as improved image sharpening settings. Now,

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