การดู
HOW TO GET A BLURRY BACKGROUND IN-CAMERA! Depth of field explained.
Changing the Auto Focus Modes on a Canon DSLR
PHOTOS OUT OF FOCUS? HERE'S WHY
Focus problem Fix | How to get Sharp Images in Camera | Sharp photo with any lens
6 Reasons Your Photos are not SHARP
5 STEPS FOR GETTING A BLURRY BACKGROUND (Shallow Depth of Field)
So, Your Photos Aren't Sharp? Here's Why.
HOW TO GET SHARP PHOTOS WITH ANY CAMERA!