« on: August 07, 2012, 02:36:24 PM »
The last 2 are taken toward sunset, when the sun is considerably less harsh than mid-day sun. You can tell by the sun flares, to the top left of her head in the second one and in the far top right corner of the last one. The 1st one might have been as well, but can't immediately tell. Taking pictures at this time of day by itself will result in spectacular light with little other light sources needed (e.g. flash, soft box, reflector). Adding in another light source definitelly helps (especially as you get closer to dusk), but not necessarily always needed.
It also looks like there is a large vignette applied to every picture in PP. By itself the 50mm 1.8 has a lot of natural vignette when shot wide open, so this could be contributing, however there is definitelly a PP vignette applied. Either way, the vignette is helping to dim the background around the edges and draw your eyes into the subject.