Over the years, Pentax has been synonymous with photographic innovation, and the Smcp-da 18-135mm f/3.5-5.6 Al If Dc Weather Resistant Lens is no exception. Designed exclusively for Pentax K-mount DSLRs, this lens is a testament to the brand's commitment to high-quality, durable, and versatile photography equipment.Embrace the power of an extended 7.5X zoom range with this lens, which offers a 35mm equivalent focal length of 27.5 to 207mm, catering to a wide spectrum of photography from expansive landscapes to detailed telephoto shots. Its versatility makes it an ideal choice for photographers who value the ability to adapt to various subjects and environments without the need to switch lenses.The lens' advanced optical design is optimized for digital excellence, featuring an image circle that perfectly matches the 23.5mm x 15.7mm sensor size of Pentax DSLRs.