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Key Features
- PENTAX HD Multi-Layer Lens Coating
- Weather-Resistant and Dustproof Design
- Increases Focal Length by 1.4x
- Reduces Lens Aperture by 1 f/Stop
The 1.4x HD PENTAX-DA AF Rear Converter AW from Ricoh is compatible with Pentax KAF2 mount lenses on select DSLR cameras. It mounts between the camera body and lens, and increases the focal length of the lens by 1.4x, while reducing the aperture by 1 f/stop. The minimum focus distance of the lens is preserved, as are auto focus and auto aperture functionality. The rear converter works flawlessly with both the camera-driven AF system and the lens-driven AF system, including that of the SDM and DC-series lenses. The camera's firmware must be updated to the latest version before using the autofocus function.
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Does anyone have experience using the Pentax 1.4 ...
Does anyone have experience using the Pentax 1.4 teleconverter with the Pentax 150-450 zoom on a K3III?
Yes, would make a great lens and tele-converter combo considering your Pentax k3 iii already offers a 1.5 magnification factor anything more then 1.4x would cause artifacts.
Date published: 2022-12-26
Will the converter work with my K70
Will the converter work with my K70
depends on what lens you are going to use , if the lens is fast like F2.8 yes " Pentax 70-200mm"
Date published: 2021-01-13
Will this Pentax Pentax 1.4x HD PENTAX-DA AF Rear ...
Will this Pentax Pentax 1.4x HD PENTAX-DA AF Rear Converter AW for K-Mount Lenses work on Full Frame lenses for the Pentax K-1 as it states DA AF DA for APS-C sensors and AF for Autofocus)?
The Pentax 1.4x HD PENTAX-DA AF Rear Converter AW for K-Mount Lenses is compatible with all Pentax KAF2 mount lenses. Autofocus is possible with lenses featuring a maximum aperture of f/4 or faster. It is only compatible with the following bodies: K-1 Mark II, K-1, K-70, KP, K-3II, K-S2, K-S1, K-3, K-50, K-30, K-5 II, K-5 II s, K-5, K-01, K-7, and K-r.
Date published: 2020-12-03
Will this work with a Pentax ist DS and a Sigma ...
Will this work with a Pentax ist DS and a Sigma 50-500mm (non hsm version) on both AF and MF?
If your sigma lens is Pentax K mount it will only work on manual focus , no AF
Date published: 2021-02-03
Will autofocus of my k3miii work with the 1.4x AF ...
Will autofocus of my k3miii work with the 1.4x AF Rear converter and my DA*200 F2.8?
The Pentax 1.4x HD PENTAX-DA AF Rear Converter AW for K-Mount Lenses is compatible with the Pentax SMCP-DA* 200mm f/2.8 ED (IF) SDM Autofocus Lens and will autofocus with the Pentax K3 III.
Date published: 2025-12-29
I bought a Pentax SMCP-DA 300mm f/4 lens to use ...
I bought a Pentax SMCP-DA 300mm f/4 lens to use on my K-1. I am thinking of getting the K-1 Mark ll. Will the Pentax 1.4x HD Pentax-DA AF Rear Converter AW for K-Mount work with this camera and lens?
I currently use the combo of 300mm f/4 + converter on my K-1. There is no reason why the same won't work on a K-1ii as well When in full-frame mode, you may see a hint of vignetting on either body, though. It's manageable with minimal cropping.
Date published: 2020-10-15
question
Does anyone have any experience using this lens with a Sigma 70-200 f/2.8 EX DG APO HSM lens? The camera is a Pentax K3.
The Sigma 70-200mm f/2.8 EX DG APO HSM lens will not lock focus when used with the Pentax 1.4X HD AW on my Pentax K-3.
Date published: 2018-08-25
Does this work with k-70?
Does this work with k-70?
Yes, the Pentax 1.4x HD PENTAX-DA AF Rear Converter AW for K-Mount Lenses does work on the Pentax K-70.
Date published: 2021-02-17