On Sunday afternoon when I looked out the window at my desk where I was working, I saw that the sky had cleared. For me clear skies = stop working. Since I live in Boulder, which brags about our 300 sunny days a year, that means I don’t get much work done.
My work indeed came to an immediate halt. I intended to drive to a favorite preserve, but just in case I could see some Tundra Swans that someone had reported at Baseline Reservoir, I stopped there and looked.
From the road I could see a flock of them in the distance. So I stopped there instead of going on. I parked my SUV on the south side of the reservoir at the dirt road behind a locked gate and crawled through the barbed wire fence. Then I walked back with my camera and tripod until the swans were at a right angle to this trail.
The swans were still several hundred yards out in the reservoir, so I was glad that I had mounted my teleconverter on my lens. That gave it a 560mm reach, but when I use a teleconverter with my camera and lens, I lose autofocus capability. Precise manual focus is much harder than autofocus, but since the light was good, I was able to stop down to f/16. That gave the lens a greater depth of field.
I also took a lot of pictures — 1,112 during my 1 1/4 hour visit — in hopes that some of them would turn out. Some did:

Two Adult Tundra Swans (Cygnus columbianus) and One Juvenile Rest on Baseline Reservoir (Canon 7D with 100-400mm lens and 1.4 teleconverter = equals 560mm, f/16, 1/500, ISO 800, -0.5ev)












