Thank you for all of your comments.
Indeed clear is not a very good defined term and excuse me because my English is not my mother language and probably I’m not that efficient in using it.
But what I really mean by “clear” is the kind of messy appearance of distinct objects like foliage or perhaps far objects. I also mean kind of blurry image, especially if I zoom on to the image, and I’m talking about the raw file. Of course treating it with sharpness or local contrast perhaps reduces the level of the problem, but I’m asking for the raw image.
Regarding this specific image, I’ll try to explain it with images that were cut from 3 points, A, B &C:
Point A
The top of the fir tree. The appearance is blurry, probably because of the wind. In fact it should of have being moving quite fast, since the top vertical branch has been recorded twice. Also the two horizontal left and right small branches do the same. So this should be the cause of the wind. I think the same theme applies to all the foliage at the right part of the image, which is kind of blurry (I think)
Point B
The three tops of the little trees are much clearer, despite the fact that they are at the same distance from the camera. They shouldn’t be moving much.
Point C
This is much clearer or less blurry than the top of the tree at point A. However it is not as clear as I would expect.
Probably in this photo my shutter speed was not as fast? I was watching it and I thought that I’m safe having 1/160. But it seems that this is safe ONLY for camera shake, and not for objects movement. Additionally, I think I remember focusing on the trees in the middle section of the image. I’m using Single Servo AF and Single Point AF mode. But in combination with the wide aperture, my depth of field could have been shallow.
I have repeatedly seen photos like that are not clear or that are blurry. I think distortion of the lens is an issue of course, but it would not provide blur on the edges of the leaves but perhaps haziness or distortion of the shape of the leaves, which is not a significant matter in my case.
This is my first DSLR camera. Before that I had a compact point and shoot Sony DSC-S40, and the images that the camera took were far more “clear” and frozen, with good lighting conditions, fully sharp etc. (of course edited by the software camera in jpeg). And the sensor was only 3.1 mega pixels, if I remember correctly. My phone also takes pretty sharp and frozen pictures, without blur, but soooooooo much edited, overcooked etc.
So comparing these experiences is what fired my concern, trying to find what is going wrong and pinpoint the problem in order to improve it, if possible. For sure my skills are not the best and need improvement! Discussing with others these issues, helps a long way along. I will try to find other photographers in my area.
Oh, and excuse me for overusing the term “clear”