Reflex lens: visible donut bokeh + animal(s)/bird(s)/insect(s)

Challenge #2 in the Camera device series. Hosted by Jerome August.
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1. Shots must be shooted by a reflex lens. (catadioptric lens / mirror lens) eg. Rubinar 300mm F4.5, Rubinar 500mm F5.6 ` 2. Donut bokeh must be clearly visible. (annular shape of defocused areas of the image caused by the shape of the entrance pupil.) ` 3. Animal(s)/bird(s)/insect(s) must be the main object(s).
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Leica Reflex Lens 3
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Photo taken in a public park in Abu Dhabi. Tiny birds, not much larger than a hummingbird
Camera:
Lens:
Submitted: Monday, 2nd May, 2011 13:42 (GMT)
Taken: Monday, 2nd May, 2011
Focal length: 500 mm
Shutter speed:
Aperture: F8
ISO:
Notes: Lens is fixed aperture at F8. Very dark and difficult to focus. Not for the easily discouraged
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