
PhotonsToPhotos published their Ricoh GR camera sensor measurements – here are some comparisons with the newer Leica CL and Fuji X100F cameras (click for larger view):

Ricoh has a new series of articles called “Make the most of your PENTAX camera“. The first two articles are: How to optimize focusing accuracy with large-aperture lenses The PENTAX Hyper Control system: A quick, effortless way to find the optimum exposure settings
Pentax K-1 Mark II Astrophotography Review