SigZilla Field Test
This is a field test from the Juza Nature Photography web site. It's definitely funny and cool at the same time.
“Overall, the image quality is of Sigma 200-500 f/2.8 is good for such an extreme lens, even though it is far from easy to get the best from this lens: at f/2.8 the depth of field is very shallow, and the focus must be perfect…even an error of few centimeters may make the difference between a sharp photo and an out of focus photos.”
Read More: http://www.juzaphoto.com/…