I got my new Singh-Ray filters a few weeks ago before a vacation to Lake Tahoe, so decided to try some long exposures. Here's the shot I got:
Lake Tahoe Twilight by Dave Michaud
I used the circular Variable-ND filter, set at about 8 stops, to smooth out the water and give it that silky look. And I hand-held a 3 stop reverse ND grad to hold back the sky and reveal more of the granite boulders.
Canon 50D, EF-S 17-55 mm @ 17 mm, I ended up with a very small crop due to some vignetting from the Vari-ND (it's a pretty thick filter).
ISO 200, f8, 25 seconds. I wanted to keep the exposure at less than 30 seconds, so changed the ISO from 100 to 200 as it got darker. After the shoot I realized I could have just turned down the Variable-ND from 8 stops to 7 stops (that's what it's for!) and kept ISO 100, but I didn't think of that in the field, first time using this filter.
I would appreciate any feedback on PP. Perhaps it could use a bit of a vignette?
By the way, my tripod and I were in 2 feet of water to get this comp. This is at Sand Harbor on the east shore of Lake Tahoe (Nevada side).