1) Well, it was Royal Wedding week! so why not stay on topic? The bunting here caught my eye as something a little different to demonstrate the effect of differing shutter speeds. As the flags flutter in the breeze we capture them here using a relatively slow shutter speed. Just one 60th of a second, a long time if your a shutter, the movement of the flags is captured as a blur and its a pleasing effect. The selection here makes for dynamic image which tells us much about the conditions when the picture was made.
1/60s, f16, ISO 100, 50mm

2) Now we increase the shutter speed to one 250th of a second. We begin to freeze motion but there are still signs of movement but not enough to really add much interest and the speed isnt quite fast enough to gain the opposite effect, correctly freezing the moment. We are going to have to go a little faster yet.
1/250s, f11, ISO 100, 50mm

3) Well, cranked up to one 8000th of a second, and hey we have stopped time, we have frozen the motion of the flittering flags. They look rigid and fixed. A good setting for sports photography when we want to seize a moment or capture technique. We gain detail but we lose our sense of motion. Notice how as we increased the shutter speed the aperture had to open up to allow more light to sensor to get the correct exposure. With this we accidentally created a change in DOF and in this last shot we lose detail in the background.
1/8000s, f2, ISO 100, 50mm

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