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Ricoh Imaging Enhances K-Mount Lens Lineup with Debut of Rear Converter


February 05, 2014 --
Ricoh Imaging Enhances K-Mount Lens Lineup with Debut of Rear Converter

Denver, Co (PRWEB) February 05, 2014

Ricoh Imaging Americas Corporation (Ricoh Imaging) is pleased to announce the release of the HD PENTAX DA AF 1.4X AW rear converter. Measuring only 20 millimeters in length, the compact, lightweight HD PENTAX DA AF 1.4X AW rear converter closes the gap between the photographer and subject, enhancing the versatility of their telephoto lenses by extending the focal length by 40%.

Optimized for Ricoh Imagings acclaimed lineup of PENTAX K-mount lenses, the HD PENTAX DA AF 1.4X AW rear converter is the ideal product for the photographer that requires the additional flexibility accompanied by added focal length. Additionally, the HD PENTAX DA AF 1.4X AW rear converter has been engineered to maintain the autofocus (AF) functionality while working seamlessly with both camera-driven as well as lens-driven AF systems.

The introduction of the HD PENTAX rear converter exemplifies our commitment to providing photographers with useful products and accessories that enable them to execute their creative vision, said Jim Malcolm, Executive Vice President, Ricoh Imaging. The rear converter makes good on that promise by giving photographers the extra focal length they need to realize the image.

Composed of four elements in three groups, the HD PENTAX DA AF 1.4X AW rear converter features superior optics and incorporates the PENTAX-developed HD coating. This high-grade, multi-layer coating is designed to minimize reflectance inside the converter while optimizing light transmittance letting the user capture crisp, high-contrast images free of flare and ghosting, even under adverse backlit conditions.

Finally, thanks to its three airtight seals, photographers can combine Ricoh Imagings lineup of PENTAX weather-resistant, dustproof DSLRs and lenses to assemble a dependable digital imaging system that performs superbly even under harsh outdoor conditions.

Pricing and Availability

The HD PENTAX DA AF 1.4X AW rear converter will be available at retailers nationwide and online in March 2014 for a price of $599.95.

Additional information including product specifications and press images are available at

About Ricoh Imaging Americas Corporation

Ricoh Imaging Americas Corporation is a subsidiary of Ricoh Company Ltd., a global technology company specializing in office imaging equipment, production print solutions, document management systems and IT services. Headquartered in Tokyo, Ricoh Group operates in about 200 countries and regions.

The company now known as Ricoh Imaging Americas Corporation, was originally founded in 1919, under the name Asahi Optical Joint Stock Co. and launched its first SLR camera in the 1950s under the PENTAX name. Today, Ricoh Imaging Americas Corporation continues to produce the heritage-rich, award-winning line of PENTAX DSLR cameras, lenses and sport optics equipment as well as Ricohs offering of stylish and compact digital cameras, known for their wide-ranging, rich set of features.

For further information, please visit:


© 2014 Ricoh Imaging Americas Corporation. All rights reserved. All referenced product names are the trademarks of their respective companies.


Amber Renard
Ricoh Imaging Americas Corporation
(303) 728-0255

Major Features
1.    1.4-times focal length extension
By mounting this rear converter between the camera body and main lens, the user can extend the focal length 1.4 times.*Measuring only 20 millimeters long, its compact, lightweight design allows the user to more easily reach out to distant subjects. The minimum focusing distance of the main lens is retained despite the extended focal length, providing for the capture of larger, more detailed images of subjects in close-up shooting.

*When this rear converter is mounted, the lens maximum aperture will be smaller (darker) by 1 step.

2.    AF compatibility Maintained

When coupled with an AF lens, the autofocus operation can be performed. This rear converter works perfectly with both the camera-driven AF system and the lens-driven AF system (such as the SDM- and DC- series lenses).**

**The cameras firmware must be updated to the latest version before using the autofocus function. Compatible camera bodies are: K-3, K-50, K-500, K-30, K-5 II, K-5 II s, K-5, K-01, K-7, and K-r. Autofocus is possible with a PENTAX lens having maximum aperture of f/4 or brighter.

3.    Weather-resistant, dustproof construction for active outdoor shooting
Equipped with three airtight seals, this model is the first PENTAX rear converter with a weather-resistant, dustproof construction.

4.     Exceptional optical performance
Thanks to its state-of-the-art optical design, this rear converter assures the exceptional optical performance that optimizes the potential of the master lens. The application of PENTAX-developed HD coating*** a high-grade, multi-layer coating designed to minimize reflectance inside the converter while optimizing light transmittance lets the user capture crisp, high-contrast images free of flare and ghost images, even under such adverse lighting conditions as backlight.

*** HD stands for High Definition.

Note: Designs and specifications are subject to change without notice.

Compatible Lenses

Compatible (AF-enabled) lenses for HD PENTAX-DA AF REAR CONVERTER 1.4× AW

  •     smc PENTAX-DA 12-24mmF4ED ALIF
  •     smc PENTAX-DA16-50mmF2.8ED ALIF SDM
  •     smc PENTAX-DA 17-70mmF4ALIF SDM 1*
  •     HD PENTAX-DA 20-40mmF2.8-4ED Limited DC WR
  •     smc PENTAX-DA50-135mmF2.8EDIF SDM
  •     smc PENTAX-DA 55-300mmF4-5.8ED - 3*
  •     HD PENTAX-DA 55-300mmF4-5.8ED WR - 3*
  •     smc PENTAX-DA60-250mmF4EDIF SDM
  •     smc PENTAX-DA 14mmF2.8EDIF
  •     smc PENTAX-DA 35mmF2.4AL
  •     smc PENTAX-DA 35mmF2.8 Macro Limited
  •     HD PENTAX-DA 35mmF2.8 Macro Limited
  •     smc PENTAX-DA 40mmF2.8 Limited
  •     HD PENTAX-DA 40mmF2.8 Limited
  •     smc PENTAX-DA 50mmF1.8
  •     smc PENTAX-DA55mmF1.4 SDM - 2*
  •     smc PENTAX-DA 70mmF2.4 Limited
  •     HD PENTAX-DA 70mmF2.4 Limited
  •     smc PENTAX-DA200mmF2.8EDIF SDM
  •     smc PENTAX-DA300mmF4EDIF SDM
  •     HD PENTAX-DA 560mmF5.6ED AW - 3*
  •     smc PENTAX-D FA MACRO 50mmF2.8
  •     smc PENTAX-D FA MACRO 100mmF2.8 WR

1* Could be out of focus with contrast AF

2* Maximum aperture from F2.4

3* Could be out of focus with phase matching AF

*Compatible (AF-enabled) cameras are as follows: K-3,K-50,K-30,K-5ll,K-5lls,K-5,K-01,K-7,K-r
(Update of cameras firmware is required)

*Could be out of focus with contrast AF of K7

*Maximum aperture (F number) will be one-stop larger

*Please refrain from equipping the following lenses since the rear converter lens might touch the joint part of those main lenses - HD PENTAX-DA 15mmF4ED AL Limited / HD PENTAX-DA 21mmF3.2AL Limited / smc PENTAX-DA 40mmF2.8 XS

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