Reply to thread

Absolutely NOT trading the 300 for the 100-300, for me.

The 300 GM works superbly with the 2x TC. None of the Sony zooms works as well (OK, I have only tested 3 of the 4 - I don’t have the 100-400).

Besides, I would expect the 100-300 to be significantly heavier.

I would expect it to work with TCs.

Sony has not released any lenses with an integral TC.  They might, but their track record says no.

The price is an interesting question. I can see it two ways:

• If they make it as sharp and fast as the 300GM, you could argue that it must cost more with the extra flexibility
• None of their white zooms cost near the price of the ultimate quality white primes, so it must cost less

I don’t know how much the Canon or Nikon versions are.

Would I buy it? Hard to say. I really like the 300 GM. Would depend a lot on its price and weight, and a bit on image quality.

• If it weighed like the Canon, heck no!
• If it cost like the 400 GM, no
• If it cost like the 200-600, possibly yes

Guess I will have to wait and see.