Two shots from last weekend at St Marks National Wildlife Refuge in Florida (a.k.a. my second home). It's a rather hostile place where movement is restricted to levees and you're surrounded by mosquitoes, biting flies, snakes, alligators, bears, sharks, and other nasty creatures. It's also humid, hot, and covered in dense thorns, cacti, and poisonous vegetation, but I go down there every chance I get.
This was a textbook shoot for me. I checked the moon cycle & temperatures and knew it would be a bad time for wildlife, so I checked the cloud cover predictions (60-80%) and realized that the sunrise had a good chance of being nice. I used the Photographer's Ephemeris to check the sun position at a couple of spots I had scouted the previous week. I got there 40 minutes before sunrise and set up my 5DIII and TS-E 17 f/4. It was windy, so I dialed down to f/8, bumped up the ISO and struggled to adjust tilt in the dark. I set my bracket to 2 stops and prepared for dawn. The first glow appeared and I emphasized the sky by shooting with upward shift. As the sun came up, I shifted the lens down to include the aquatic plants and reflection. The dynamic range was too high, so I ended up blending two exposures in the second shot with a simple layer mask/gradient to mimic a split ND filter. Not my best work, but I'm pleased with both shots and more so with my planning & execution.
Twilight (f/8, 1/30s, ISO 1600):
And a little while later after sunrise (f/8, 1/30s (+2EV) and 1/125s, ISO 400)::