The first AF compatible rear converter which is specially optimized for PENTAX lenses.
PENTAX lens users can readily obtain the telephoto effects.

This compact, high-performance rear converter not only extends the focal length of the main lens by 1.4 times,
but also accommodates the flawless autofocus operation of the main lens,
and features a dependable weather-resistant, dustproof construction for all-weather shooting.

• Optical systems optimized for APS-C sensors
• Compatible with both in-lens AF(SDM,DC) and in-body AF
• Dust & Water proof constitution (AW)
• HD coating