speters wrote:
The older version had only so, so IQ, especially with extenders, were it was very soft across the entire frame.
The newer version has improved a lot, but AF is still sluggish.
Thanxs for the reply. Interesting I was thinking about the convertors for Bird photography in India which would of extended my reach! Was thinking about the Tamron 200-600mm but blooming heard so many problems across other forums about freezing ,af issues thought the 120-300 may be the best route to go down.