The Nokia N8 provides only 2x digital zoom in stills and 3x zoom in video, can you explain why?
In the case of stills, we capped the zoom at a point where we felt the image quality was still usable. But honestly speaking, going much beyond this only reduces image quality. Of course, though, there are on-device editing tools for cropping, etc. which you may prefer to use. In video, it’s a slightly different story and this deserves further explanation for you to be able to get the most from it. At the starting point (zero zoom), as mentioned earlier, we scale the resolution from the full-resolution sensor to the resolution needed for 720p video, 1280×720. Through binning, we’re able to reduce noise in video to such a level that noise reduction is actually disabled in normal lighting. This is great for all-round, daily use. Digital zoom between 1x and 2x is reasonably consistent. There is a little fall off as you approach 2x zoom. However, around this point, there is a mode switch. So, rather than the normal method, we reduce the resolution by the same factor and then scale accordin
