Trying to open an image from a Pentax Camera in gwenview will result in a segfault. It happens when it's trying to read metadata for the image. CLI tools like exiv2 and exiftool work correctly on the image.
Relevant Gentoo bug, with example image: https://bugs.gentoo.org/show_bug.cgi?id=626214
*** This bug has been marked as a duplicate of bug 382842 ***