I wanted to do a shot similar to this is one. But with more of her waist and feet in the image. I also wanted her face in focus and the further you travel from her face to her feet out of focus. I was using the 28-135 4.5 lens and could not get this effect. Since Im towering above her in a park standing on a picnic table I cant back up further away to play the zoom game. I am capable of playing the blur game with smaller objects such as this necklace shoe shot. FYI I didnt take this photo, its just a example. But when I try to get up close on a subjects face or use larger objects other then small necklaces it just doesnt work. I rehearsed it with beer cans and it did just fine. LOL! Larger objects like people not so much. For instance I would have liked the wall to the right of her face to be a little more out of focus. Id like to creativley bring more attention to a subjects face by blurring out a closer background and not something so far off like trees or skylines. What lens for D 50d aps sized sensor will have this effect?