In the case of the Canon 50 1.8, I have read of big front focus issues...and mine does it.
In your shot, the leading hair and nose are sharp. Chances are that is the back edge of your DOF range. Unfortunately, without testing with a ruler or other object it is hard to tell since you cannot see what really is in focus. It would be vacant air in the case of a portrait if you really are FF'ing.
Ian Bower wrote:
You think this picture is over exposed? hm. I need to get a light meter.
Assuming you have Photoshop open the image and then open Levels (Control L)
Now, holding down the Alt key, click on the right hand arrow under the graph. See those colors? That shows you have overexposed the channels of the colors you see displayed. If all the channels were overexposed it would show up as white areas
So the red channel is blown for the skin and the blue channel for the clothes.
Using those super wide open apertures are a pain in the ass at first. I"ve got a Canon 50 1.8, and it's pretty sharp, however, my 85 1.8 is about 400X sharper at f/1.8
It's a narrow DoF and a pain to shoot. Once you get used to it, you'll shoot it, realizing that it's not the sharpest DoF, but does the look you want.
