Pentax K-7 and K-x firmware upgrades pack SDXC compatibility
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Pentax K-7 Review: Digital Photography Review
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Ricoh Imaging - SAFOX IXi: a more accurate and responsive autofocus system for the PENTAX K-30 Overall autofocus performance is rasied significantly in the new K-30 by the use of an advanced
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Pentax gives K-x and K-7 SDXC compatibility - CNET