Ricoh has announced two new zoom lenses for Pentax K-mount DSLRs, the HD Pentax-D FA * 70-200mm F2.8ED DC AW and HD Pentax-D FA 150-450mm F4.5-5.6ED DC AW. Both are designed to cover a full-frame sensor and are built to withstand exposure to dust and moisture. Read more
Articles: Digital Photography Review (dpreview.com)