USED Pentax HD-DA AF Rear Converter 1.4x AW

The HD Pentax-DA AF Rear Converter 1.4x AW is a weather-sealed teleconverter that increases the effective focal length of any compatible lens by 1.4x, which results in extra reach.  This comes at the cost of one stop of light and a little bit of image quality; a 50mm F2.8 lens with this converter would effectively turn into a 70mm F4 lens, for instance.

This modern teleconverter allows AF lenses to function without limitations.  It transmits aperture and lens information to the camera so that nothing has to be manually set by the user.  In addition, it supports not only traditional screwdrive autofocus but also SDM/DC autofocus.

The teleconverter has also been treated with Pentax's latest HD coating to minimize reflectance and ultimately deliver the best possible image quality.

AF compatibility:

The lens must be F4 or faster. Slower lenses can be used, but phase detect autofocus may be unreliable and contrast detect AF (live view) is  recommended instead. Curiously, the smc Pentax-DA 17-70mm F4 may not acquire focus in contrast detect mode (live view), here phase detect (viewfinder) should be used.

Cameras supported:

Pentax K-3 (all versions), K-50, K-500, K-30, K-5 II, K-5 II s, K-5, K-01, K-7, K-r (firmware update may be required), and all newer models.

Lenses supported:

At it's launch in 2014, all Pentax DA series AF lenses in production can be used, except for the following, where damage to lens or converter will occur:

• smc Pentax-DA 15mm F4 ED AL Limited
• HD Pentax-DA 15mm F4 ED AL Limited
• smc Pentax-DA 21mm F3.2 AL Limited
• HD Pentax-DA 21mm F3.2 AL Limited
• smc Pentax-DA 40mm F2.8 XS

There are some restrictions where AF won't work reliably in either live mode or PDAF, or both. Refer RICOH's compatibility list here.

This is a brand new, boxed complete and unused Pentax HD-DA AF Rear 1.4x AW Tele Converter for Pentax AF DSLR cameras to work with most lenses

6-month warranty