Update 7/11/2012: Just got back from a road trip to Adelaide, Kangaroo Island and Mungo Lake. Here's some Sigma 50-500 images shot while on the trip.
Grey Kangaroo - f/8.0, 1/400, ISO 400, subject distance 19.0m, focal length 500 mm
Lizard - f/8.0, 1/500, ISO 125, subject distance 1.7m, focal length 500.0 mm
Bees - f/6.3, 1/200, ISO 100, subject distance 2.7 m, focal length 244.0 mm
Emu - F/8.0, 1/500, ISO 1000, subject distance 7.4 m, focal length 450.0 mm
Update 8/7: Well it's been a while since we arrived home but I took the Sigma 50-500 mm away with me on my recent trip to Papua New Guinea. Here's a few using the lens and in action.
Pic 1. Yours truly, the lens is great to lean on
Pic 2. My wife, Kelly, shooting with the lens in the village of Watam
Pic 3. Taken from a zodiac while motoring up the Sepik river, the kids were about 10 metres from the boat"
Pic 4. Woman with umberella
Pic 5. Young woman with T-shirt headdress
Update 29/3: After quite a bit of research I've gone with a Sigma 50-500 mm APO 50-500mm F4.5-6.3 zoom telephoto. It's a big beast but from the initial shots I'm very happy with it. Here's two shots of the tower on the Anzac bridge, the first at 50mm the second at 500mm.
Pictures from the 120-400 follow:
My good friend and bowling companion Greg Williams loaned me his Sigma 120-400 zoom telephoto, Nikon D90 and Manfrotto Monopod today to have a play with. Kelly and I had to pop down to a dive shop called Plunge at Chowder Bay to book in for a refresher course so I took the opportunity to have a wander around the area and take some photographs with the gear
1. Rabbit on the lawns near the Tea House
2. The following are shots taken at 400, 300, 200 and 120 zoom.
