Today Sigma issued a new advisory that some of their lenses for Pentax K mount could leave a “small scratch” when attached to the new Pentax K-70 camera. Similar issue was also reported with the K-1 camera. Here is the full press text with the list of lenses: We have found that some SIGMA interchangeable lenses … Continue reading New advisory: some Sigma lenses could also scratch the Pentax K-70 camera