Ricoh has expanded its full-frame lens range, announcing the HD Pentax-D FA 15-30mm F2.8 and FA 28-105mm F3.5-5.6 alongside the introduction of the full-frame K-1 DSLR.

The HD PENTAX-D FA 15-30mm F2.8ED SDM WR is a large-aperture, ultra-wide-angle zoom lens for PENTAX K-mount digital SLR cameras. When mounted on the PENTAX K-1 35mm full-frame digital SLR camera body, this zoom lens provides an ultra-wide-angle focal-length coverage from 15mm to 30mm.

The HD PENTAX-D FA 28-105mm F3.5-5.6ED DC WR is a compact, lightweight standard zoom lens for PENTAX K-mount digital SLR cameras. This new compact, lightweight standard zoom lens provides a focal-length range from wide angle to medium telephoto.
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