Today I was taking A picture on 48mp , so i change the resoltion to 12 mp to see the picture quality, But i didn't find much difference why? Can anyone tell me ?
Pay attention to details. If you don't see any difference then just stick to 12MP.
The difference between 12Mp vs 48Mp is very apparent when taking pictures in broad daylight and comparing them on a computer screen. But for most cases, 12Mp will give you a better result since it needs less light in darker scenes and it can provide slightly better HDR in brighter scenes.