Sony 300mm GM for birds

The Sony 300mm GM lens has superb image quality and fast, precise autofocus. The lens's lightweight design, excellent performance with teleconverters and wide aperture of f/2.8 allows for stunning bokeh and excellent low-light performance.

300mmGM vs 200-600G

I think it’s hard to compare these two lenses. But as the 300GM is going to be a direct replacement of my 200-600G I will outline my reasons for making this decision below.