As you can see, if you can spot the places, the sharpness of tiny details is impressive
So, how is the Lens?
To answer to the first questions I've got via Instagram and Facebook, I can say that the overall lens performance is outstanding.
Said that I shoot with two 36Mp Nikon DSLRs (a D800 and a D810), the image quality obtained is absolutely incredible for a so extreme focal length (11mm not fisheye).
The only two tangible evidences that can be found are a little amount of distortion on the sides (and I challenge anyone to not finding it in a 11mm lens), and some very limited fringing.
This last one, mainly visible on the the high contrasted borders, for example those where the line of the mountains meet the sky. But both of them can be easily corrected via a couple of clicks with Lightroom or Camera Raw.
As first hint I can share is that the fringing phenomenon can be heavily reduced if the lens is stopped to f/8 till f/11, at the same aperture the lens reaches its maximum sharpness.
Basically I guess that's the sweet spot of the lens, and when one is doing landscape photography, f/8 is quite a good aperture to shoot.
The lens perform great even for night photography, here you can se a photo of the Milky Way obtained with the combination of 25 shots at high ISO. So, to complete the post, here are two of the first samples I've took on the field, more will follow really soon.
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