Author 'Syruloben' (Id 181356 ) : This is after a first refusal for the Web I will refer you this photo where I straightened the horizon, which was slightly curved and I also decreased the exposure of the 1st plan. It is also a view of Mallorca (Regionn Transmontana). I find that my photos lack sharpness. This is due to the lens or can I do something to improve this point ? THANK you for your advice. Sylvie.