Since I got my 5D III, with it's incredible autofocus system, I can now use my prime lenses to good effect. One that has become a favorite is the 85mm 1.8 USM lens. I shoot mostly people these days who are moving and posing, so a light, compact lens is very helpful. This shot was at 1/200, ISO 200 and F/4. The light was very flat due to the bright overcast sky, so I increased the contrast in Lightroom. I can do so much in Lightroom now that I really question the need to have heavy, expensive prime lenses that give a bit better contrast or color rendering than the mid-range primes like the 85/1.8. I have a 135L that is fun to use, but I can't pick out the 135L images from the 85/1.8 images without cheating.
This is not one of the better images from this shoot, but the model was quite the exhibitionist and there weren't many images suitable for this forum.