The full ISO test still-life.
As this 100% crop shows the Pentax Q delivers noise-free images at ISO 125.
At ISO 200 images are still noise-free and display good shadow detail.
At ISO 400 shadow detail remains strong with only a minor softening of detail.
At ISO 800 whereas most 1/2.3in sensors are starting to fail, the Pentax Q is still producing pretty good results.
By ISO 1600 there is quite a noticeable softening in detail. However, compared to the vast majority of compacts the overall results hold up very well indeed.
By ISO 3200 the image has started to degrade quite noticeably.
The top sensitivity setting of ISO 6400 shows a dramatic loss of detail.