Yay, I gave you your 200th for this truly beautiful photo. It's an absolute pleasure to take in the scene. The sheen of water washing against the rocks in the background really set them off. There can't have been a puff of wind out there going by the stillness of the tree?
Hi Konrad, I used the Light Craft Workshop ND500 filter for this shot. No GNDs were needed because the exposure was so long; I just covered up the sky for part of the exposure to prevent it blowing out.