2 part challenge

here is the overdue photo i was talking about , not a great picture but it shows the challenge i wanted to emphasise.
firstly the camera settings when i took .
shot at f8 , 1600 iso , 1/640 , focal length 24mm . about 2pm this afternoon in bright sunlight.
No filters were used and nothing to block the light .
No processing in photoshop , except 1/3 of a stop added to exposure in camera raw .

Now the photo would suggest a slow shutter speed , but shooting at iso 1600 and 1/640 sec , is by no means slow enough to freeze some of the water in this shot .

So my question is . ' how did i do it '

ANY THOUGHTS ............



I've looked around and I cannot find it.

Mark Keogh's picture

so busy haven't had chance to get it , but i am working on it .