Hello Stephane. Your mountain pics have captured my attention. About this image, it´s an interesting composition, I also use Nikon, and have you noticed the colour deviation in the top corners? I guess that´s due to sensor heating in this camera model, my D80 did it always too, in exposures more than 15 min. D300 hasn´t that problem. Good for Nikon ;) In the other hand, the noise seems well controlled. I also like the tone of the image, there´s light coming from below that makes an interesting gradient
