Sigma Announces Lens Mounting Issue with K-70

Minor scratch to the camera body possible

By PF Staff in Third-Party Announcements on Aug 9, 2016
Sigma Announces Lens Mounting Issue with K-70

Sigma Japan has posted a product advisory warning customers that when select Sigma lenses are attached to the Pentax K-70, a minor scratch to the camera's lens mount may be inflicted. This notice applies to the following lenses:

Sigma advises customers to send in the affected lenses for free repairs at an authorized Sigma service center.  Sigma will also soon offer to repair affected K-70 bodies at no charge.

This same notice was issued for the Pentax K-1, along with a corresponding repair service.

The Damage

Many Sigma lens mounts have flanges with a larger outer diameter than genuine K-mount lenses.  Since this flange can extend beyond the mount on the camera, it can come into contact with the camera body and cause a scratch, even after a single mounting.

This issue currently only affects the K-1 and K-70.  To address the problem, Sigma is replacing the flanges with ones that won't come into contact with the camera body.

An example of the resulting scratch is shown below:

Press Release

Thank you for purchasing and using our products.

We have found that some SIGMA interchangeable lenses for Pentax mount could leave a small scratch on part of the camera body when they are attached to the PENTAX K-70, released by RICOH IMAGING COMPANY, LTD. on July 22nd, 2016. In this circumstance, please do not use the following lenses for Pentax mount on the PENTAX K-70.

We are planning to provide a repair service to replace the part of the lens relating to this issue, just as we announced for the PENTAX K-1 on May 27th, 2016. We will make a further announcement on our website when specific details are finalized.

Phenomenon
When some SIGMA interchangeable lenses for Pentax mount are attached to the PENTAX K-70, the upper part of the mount can be scratched.

Applicable products
Lenses that have been repaired for Pentax K-1 do not need another repair to be used on Pentax K-70.

Current Line-Up
SIGMA 30mm F1.4 DC HSM | Art
SIGMA 35mm F1.4 DG HSM | Art
SIGMA APO 50-500mm F4.5-6.3 DG OS HSM

Discontinued Lenses
SIGMA 50mm F1.4 EX DG HSM
SIGMA 85mm F1.4 EX DG HSM
SIGMA 24-70mm F2.8 IF EX DG HSM
SIGMA APO 70-200mm F2.8 EX DG OS HSM
SIGMA APO 70-200mm F2.8 II EX DG MACRO HSM
SIGMA APO 50-150mm F2.8 II EX DC HSM
SIGMA APO 120-400mm F4.5-5.6 DG OS HSM*
SIGMA APO 150-500mm F5-6.3 DG OS HSM*
* it is applicable to the models without OS function, too.

For further information, please contact your nearest authorized SIGMA subsidiary / distributor.
http://www.sigma-photo.co.jp/english/network/index.html

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