Indeed I stand corrected. I have downloaded Lumia Camera on my 1020. Pity it cannot be had on the 640 as I really am not a fan of the default Microsoft camera. Any who, do any fellow 1020-toting individuals have any tips on how to get the best shots possible using Lumia Cam?
Best idea is to take your phone on a photo expedition and try it out in different scenarios - scenery, dawn, dusk, cities, closeups-macro, people, indoors and you will slowly understand what settings to use in each scenario. More or less you will change light settings depending on lighting conditions like sunny or cloudy, incandescent or fluorescent or auto.
Sometimes you will change focus manually to get a macro shot
ISO and shutter speed - you might change when indoors as lighting could be mediocre
Check your photos after taking them, review them and try to gauge whether that's what you wanted from the camera. If you take a photo of a flower in strong sunlight, it might appear too bright. So next time you try to reduce exposure.
Try several shots of the scenario if you can and then later review and select the best ones. Always copy them to the pc and keep them for future reference
I would recommend you NOT to use auto upload to onedrive as that would consume a lot of battery and data. I've always kept it off. I would be a fool to upload 3Gb of photos per day when that data bundle would cost me 10USD. Spending 200USD per month on data is crazy
Pack an extra power bank in case of long trips
Keep your hands steady when taking shots. It has OIS but you also need to play your part. If you can and it's available in your country and you have the money, buy the camera grip and use a tripod. Majority of countries don't have this unfortunately
If you have specific questions, just quote me and I'll answer as quick as possible