Hello , The Sony Zeiss 24mm is supposed to be amongst the best APS-C e-mount lens optically , however I have noticed softness in my images so I did a quick test... When I focus for the best sharpness on the right side , the left side is OOF and vice versa. I can try to compromise between left and right sharpness and I get less then optimal sharpness on both sides. Stopping down to f/8 f/11 helps to some extent. Sample 1 @f2.8 Focused on the left : l.JPG Focused on the right: r.JPG Attempted compromise: c.JPG Acceptable at f/8 _DSC0089.JPG Sample 2: @2.8 Right side in focus: r2.JPG Left side in focus : l2.JPG Sharp across the frame at f/8 f8.JPG Please inspect these at 100% and tell me what you think ..