I have an image with detail : - Dimension : 930 x 1433 pixels - Resolution : 71 pixels / inch The image has left/top/right/bottom border with black color I display the image inside an UIImageView. The mode is "Scale to fill" - If i set the width of the UIImageView to 84, i totally can not see the left border - If i set the width to 85, i can see the left border but it's very blur - If i set the width bigger and bigger, the left border appears clearer - If i set the width to 120, it becomes normal The same happens for top/bottom border - Set height to 110 : can not see top/bottom border - Set height to 120 : can see but still blur - Set height to 140 : they become normal I test it in the iPad simulator 4.3. When i view it in Interface Builder, it appears normal. Anyone have any hint ? Thanks.