I've seen many camera samples taken with the Nokia 6 and I was blown away with by the image sharpness. I'm doing a lot of pixel peeping. The reason for that is because it's sometimes hard to tell the difference between different cameras if you look at images in low-res or when they are downscaled. I was very not satisfied by the image quality of the LG G6, but oh boy I loved the Nokia 6 image quality. I think that the image processing as a lot to do with it and I think that some vendors just ruin the image with overprocessing, by adding extra sharpness and noise reduction just to please consumers. People viewing images at low-res will maybe interpret that as a sharper and cleaner image, especially when comparing two images taken in low light at high ISO.
The Nokia 6 images are tack-sharp. I could easily read even the smallest letters and observe the stitches on the clothing of one of the subjects that were shot from far away. Of course, need to have good glass so it can really showcase the capability of the sensor to capture a high detailed image. Most people don't pay attention to the fine details and of don't over analyze the image to find out any flaws with how the image is rendered and processed. There is little reason to that because, at the end of the day, you don't view the images at full resolution on the web, Instagram, Facebook or other social networks, you view them downscaled and resized to fit a certain screen, which its resolution is much lower than the image.
The Nokia 6 camera smaples that I've seen looked almost as sharp when viewed at full-res than downscaled. There was no sign for wierd image processing tricks. I usually can see it because when the image is processed you can see the effect in the details of the image. The Nokia 6 camera is really super sharp and beats many flagship cameras out there, even the LG G6 and the Huawei P10 Plus ones. I didn't compare the sharpness in high ISO, only in daylight, just so I can see how the sensor and lens perform in optimal lighting conditiosn. The result might be different in high ISO, where image processing place a more important part in making the image look better.