The second shot is actually very beautiful, well composed and definitely worth showing! I have seen double rainbows many times before - the top one is usually more faded, and so often it has disappeared by the time you see the stronger rainbow underneath - probably why you only see one more often than two
Just my theory. It may also depend on the angle at which you are viewing the rainbow as to whether you can see the more faded rainbow - again, just another theory of mine
. Of course, rainbows don't always have a second arc either...and it's certainly special when you do get to see a double rainbow
triker wrote:surprisingly I can´t detect any sharp spot on the "green" roof picture.
This could be for a few reasons, like what type of focusing mode you used, how steady the camera was - especially given that you zoomed in, etc., but most importantly, the camera needs a certain point to focus on in order for it to get something in the picture in-focus. The roof seems to be a difficult object to focus on, as there is not much that stands out that you could pick out with the focusing square. But you could try focusing on one of the seed pods on the roof, using spot AF, and perhaps also pressing the Macro button (to take a macro at the zoomed end of the lens) - this helps focus in on one part of the scene. You would need to make sure the camera is steadied on something for this to work properly (e.g., a tripod, or placing the camera on an even surface, or steadying yourself against something). You could also make sure "camera shake correction" is turned on in the menu. Using infinity focus also works well, to get more of the picture in focus, in, say, the centre part of the picture. Maybe turning up the contrast and sharpness all the way in the image settings might also help.
Having said all that, I do actually see that one of the seed pods in the centre-right of the picture, and the area surrounding it, is partially in-focus, so the camera has managed to detect something that stands out to focus on, but it needed a bit of extra help to zone-in on that area. But this is not the ideal subject to try and get a well-focused picture from anyway...however, with a bit of work, it could be possible