View Full Version : Sigma / Pentax K-1 issues - warnings

12-05-2016, 12:46pm

Sigma Japan has posted a product advisory warning customers that when select Sigma lenses are attached to the Pentax K-1, a minor scratch to the camera's lens mount may be inflicted


When some SIGMA interchangeable lenses for Pentax mount are attached to the PENTAX K-1, the upper part of the mount can be scratched. This phenomenon is due to the interference with the shape of the upper part of the mount on the PENTAX K-1 camera body and it does not occur to any cameras other than PENTAX K-1.

Applicable Products

Current Line-Up

30mm F1.4 DC HSM | Art
35mm F1.4 DG HSM | Art
APO 50-500mm F4.5-6.3 DG OS HS

Discontinued Lenses

50mm F1.4 EX DG HSM
85mm F1.4 EX DG HSM
24-70mm F2.8 IF EX DG HSM
APO 70-200mm F2.8 EX DG OS HSM
APO 70-200mm F2.8 II EX DG MACRO HSM
APO 50-150mm F2.8 II EX DC HSM
APO 120-400mm F4.5-5.6 DG OS HSM
APO 150-500mm F5-6.3 DG OS HSM

Usage Notice for customers who are using Pentax mount SIGMA lenses on a PENTAX K-1

In some cases, depending on the lenses to be attached on the camera, the angle-of-view cannot be recognized automatically. Please select an angle-of-view that is appropriate for the lenses to be attached from “Crop” in the camera’s menu.

When DG lenses are attached, please select “FF”.
When DC lenses are attached, please select “APS-C”.

We appreciate your continued support for our company and products.

I @ M
12-05-2016, 1:12pm
Reading through the Pentax forum article and a few comments it appears that the lens ever so slightly contacts the camera body and leaves a cosmetic scratch. Doesn't look like any big deal as I reckon more scratches are inflicted by clumsy owners mounting lenses on any camera brand / model.

So far there don't appear to be any clouds on the horizon for the K-1, reading a few preliminary reviews and seeing image samples it is shaping as a glorious piece of gear at a very good price.