Editing photos for the net

Due to the lower resolution of a typical monitor than even a mobile phone camera, many people who upload photos to the net are wasting precious space and bandwidth, as the photos are uploaded at their full size.  If you are going to upload a 13MP photo which measures 4208 pixels across, you are just taking…

How do you know if your remote control is working?

Now, we all know that Infrared (IR) light is invisible to the human eye. So how do we know if that remote control is not working or merely out of battery power? In comes your trusty old digital camera again. But hey, I have my Xiaomi Mi3 with me all the time, so what better…