I am "in" - just acquired a used 808. I have a RX100 but still there often appear moments where I don't have a cam with me but would like to catch the moment. Having receive the 808 I wonder why I did not get it earlier. I think it also feels quite good as a phone.
Question- do you shoot 8MP mode or do you shoot full res and downsize later?
Depends on the shot. For more casual shooting, I will use pureview 8mp. Super extra casual shooting, ie food pics etc I shoot 5mp. For me, I use the 808 all the time since it is with me all the time. You have to have some sort of management of file size, otherwise you are going to require alot of external storage to store images, that are not necessarily archival and will not benefit from 41mp quality.
The beauty of the Nokia 808 is the extremely clever pixel combining tech used to create the 8mp file from 41mp sensor capture. In general preview 8mp allows for up to ISO 800, and low ISO the amazing pixel binning exhibits image quality signal to noise similar to older gen dslr like the canon 20d, and the cleverpixel binning means the image quality mimics fovern style images, ie. Not Bayer style images.
Using full red 38mp, or 41mp in camera pro, is nice, but now file sizes are quite massive, and I would keep the ISO to a maximum limit of 200. Anything higher, the quality of the image degrades substantially, and the benefits of capturing at higher resolution is lost. IE you are probably better capturing the same image at ISO 400 in pureview 8mp than 41mp full res ISO 400 as quality per pixel will be superior in 8mp mode.
If you are willing to post process all your image on a PC later, then Stefan's way of capturing may be feasible to be used all the time, and using higher ISO 400 and 800 in full res modes may be alright since by downscaling from 41mp to 16mp approx, will in general reduce noise too.
Here is some 8mp pureview shots I have taken recently. As you can see using 41mp straight out of camera may have been possible, but no real need for the type of images captured. Also remember to click twice on the image to view them in 100%view so you can pixel peep and see the quality of the Nokia pureview modes.
Here's a black and white I threw into the mix. See the way the thread is rendered. Perfect!! No digital Bayer artifacting what so ever, and no additional sharpening has been added or removed from any of these images.