Mallard resting in the grass…
Nikon D5100, AF Nikkor 55-300 mm. f/5,6. 1/320s.
HDR toned in Photomatix Pro

Horsefly closeup…
Nikon D5100, AF Nikkor 55-300 mm. f/5,6. 1/500s.

Closeup on the nature…
Nikon D5100, AF Zoom Nikkor 24-85 mm. f/8. 1/125s.