Portraits is also a toughy for me too, as my children also not happy to have the grandchildren on the internet, and the kids are not always wanting to pose. Below is something of how a trip to the beach went.
Grandson...... " come on nanny, help me with this sandcastle"
Me..... " Okay, just let me take a couple of photos first...come on big smile"
Grandson pulling a face.
Me...... "quickly come on let me just take a few photos and then i will build sandcastles."
Grandson pulls another face.
Me ....." One photo then ill play, please i will be real quick"
Grandson screws his face up, as the sun is in his eyes. On goes the cap, too shadowy, off comes the cap.
Grandson ......."Nanny you have taken a few, now please play"
Me "Just let me take a one more....move over to the right....turn your head, now le me take one more. Do not look at the camera, pretend im not here.One more, let me take one more"
Grandson " Nannyyyyyyyyyyyyyyy"come on,pleeeeeese.
We play, i build sandcastles, dig holes, carry water, chuck seaweed, and every so often out comes my camera. I have pictures of boats, windsurfers, swimmers, everything but an entry for this month.
My grandson thinks he has won.........I have 3 more weekends to go.

sue
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canon 400D
18-55 lens
tamron70-300 lens
sigma 18-200 os lens
All my photos are clickable
my flickr
http://www.flickr.com/photos/27828538@N03/