I am not really sure if this works or not. The colour in the water comes from reflections from a nearby stone wall with lichen on it. I always find the exposure very hard to get right.
Canon 5D Mk 111.
Canon 500mm
Hide and tripod.
1/250 sec
iso 1600
f/ 6.3
-1 full stop down exp comp. Cropped slightly in Lightroom and a few bright water spots removed.
Thank you for your comments on my last post.
Andrew