Maybe the shuttle speed I used affects the "wrong lightings"
very much. In the morning when I took the Premium pictures, I used
1/60 which seemed too dark for some so I had to edit the
pictures to make them brighter. When the sunlight grew stronger in
late morning, I got some pictures serverly overexposed with the
same 1/60. Then I had to bring it to about 1/750 and only then it
seemed fine. Now I realised that it is really a
challange to get the correct shuttle speed. Also, my first two
pictures were cropped. Here's the original unedited of the first
two.


For beginners, just use auto lar. Slowly then learn manual mode
please. Haven even master simple shutter speed, ISO and even
aperture value, why don't you try it out there and show us better
photos.
One thing to share, it is not just shutter speed which control
brightness. Those who uses manual will know tat shutter speed, ISO
and aperture value will control brightness also.