It's not always that you wanted to take breath taking photos with the expense of speed. There will be times that you don't care about how much detail you can get. All you need is a good enough (or great enough) photo that you can take, at-once/on-the-fly/with-the-hit-on-the-ball-sack (which ever you prefer).
Suprise surprise, just use the built it Camera app of Windows Phone. The same default camera application that comes with Nokia (and Non-Nokia windows phones). It's quick and reliable. The downside is that you are limited to capturing up to 8mp of photograph which mean you won't be able to maximize the gargantuan sensor of a Lumia 1020.
|Image taken from Anandtect.com|