This unifocal standard lens offers a focal length equivalent to 61mm in the 35mm format, and measures a mere 9.2 mm in length, making it the worlds thinnest interchangeable lens. Thanks to its super-thin design, it is highly portable and easy to store and carry. Its optics were designed based on those of the acclaimed smc PENTAX-DA 40mm F2.8 Limited lens.

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Its maximum aperture of F2.8 produces sharp, bright images in a wide range of photographic situations, including snapshots, scenic photos, portraits, and even low light indoor shooting.