Great photo, as you've posted this can I follow up with some questions about which lens I should get as the 70-300 G is on the list?

I’ve recently purchased a A300 along with the kit lens and a Tamron DII 55-200, mostly because the reviews were ok and the price was down to Ł43 through the web. I thought it would be an improvement on my Sigma 70-300 DG Macro I used on my D5 but having done more reading I understand the Sigma is not a bad lens for the price.

I am happy to sell my existing lens and purchase something better, I travel to great places – South Africa on safari, Canada and Morocco this year then off to India to see Tigers next April and I want to have decent photos when I come back.

So what lens or combination should I get to take landscapes and wildlife at a distance?

At present I favour:
Tamron 18-250 or Sony 18-250 and keep the Sigma or

Sony CZ 16-80 and Sony 70-300 G (i'm not sure i see the point of a 18-250 and 70-300)

Or Sony 18-250 plus Sony 500mm

The only review of the 500mm wasn’t the best I’ve ever read so I’m not sure about that (http://www.newcamerareview.com/sony_500mm_f_8_reflex_lens_reviewid208.html)

If I spend too much I’d have to buy at least one lens in Canada where they are cheaper but only come with a Canadian warranty......

thanks in advance. Jamie