Very few lenses work well wide open(f/1.2). If you were about 3 ft. away from your subject, your Depth-of-Field would be about 0.05 ft.. I don't know what the works out to in inches but it's really small! Try taking a shot stopped down to at least f/4 & see what you get. In order to do a complete test & rule out all external influences, you need to do it on a tripod without flash.
__________________
MY GEAR
Flickriver
I turned out to be the only hell my Momma ever raised. 
|