Looks like a 10mm and a fair amount of aperture, nicely taken CSCS.
You guessed it, 10mm setting using a 10-20mm Sigma. I'll have to check the meta data for the aperture I usually shoot in mid range.
I love shooting with this lens. I've learned to get low or to step back from where I would normaly take a shot. In this case it gave the roots of the Black Pines as the forground.
Thanks again for the feed back,
Super lens and full of possibilities Joker, I have an 8mm Nikkor for my Nikon. If anyone sends me that new MarkIII for free, I'll have to work on getting a dedicated 10mm for my Canon's.